Nils Christopher Gerhardt

Fakultät für Elektrotechnik, Informatik und Mathematik
nils.gerhardt@uni-paderborn.de
ID
115298

180 Publications

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[180]
2025 | Journal Article | LibreCat-ID: 61932
N. N. Ledentsov et al., “VCSELs: Influence of Design on Performance and Data Transmission over Multi-Mode and Single-Mode Fibers,” Photonics, vol. 12, no. 10, Art. no. 1037, 2025, doi: 10.3390/photonics12101037.
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[179]
2025 | Journal Article | LibreCat-ID: 61931
U. Diiankova et al., “Multimode vertical-cavity surface-emitting lasers under spin injection,” APL Photonics, vol. 10, no. 10, Art. no. 106120, 2025, doi: 10.1063/5.0286998.
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[178]
2025 | Journal Article | LibreCat-ID: 64551
M. Lindemann et al., “Laterally coupled vertical-cavity surface-emitting lasers with                    tunable resonance width and frequency,” Journal of Applied Physics, vol. 138, no. 5, Art. no. 053102, 2025, doi: 10.1063/5.0275622.
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[177]
2025 | Conference Paper | LibreCat-ID: 64293
N. C. Gerhardt, M. R. Hofmann, L. Zens, J. Möller, and V. Besaga, “Quantitative holography for the characterisation of semiconductor amplifieres and lasers,” 2025, doi: 10.1117/12.3041318.
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[176]
2024 | Journal Article | LibreCat-ID: 64550
L. Zens, V. Besaga, J. Möller, N. C. Gerhardt, and M. Hofmann, “Holographic measurement of gain and linewidth enhancement factor in semiconductor waveguides,” Optics Express, 2024, doi: 10.1364/oe.538741.
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[175]
2024 | Journal Article | LibreCat-ID: 64585
M. Lindemann et al., “Controlling the helicity of light by electrical magnetization switching,” Nature, vol. 627, no. 8005, pp. 783–788, 2024, doi: 10.1038/s41586-024-07125-5.
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[174]
2024 | Journal Article | LibreCat-ID: 64549
L. Zens, V. Besaga, J. Möller, N. C. Gerhardt, and M. Hofmann, “Holographic measurement of gain and linewidth enhancement factor in semiconductor waveguides,” Optics Express, 2024, doi: 10.1364/oe.538741.
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[173]
2024 | Conference Paper | LibreCat-ID: 64296
M. Lindemann et al., “Study of Electrically Excited Photon-Photon Resonances in Self-Injection-Locked Coupled-Cavity VCSELs,” 2024, doi: 10.1109/islc57752.2024.10717381.
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[172]
2024 | Journal Article | LibreCat-ID: 64295
L. Zens, V. Besaga, J. Möller, N. C. Gerhardt, and M. R. Hofmann, “Holographic measurement of gain and linewidth enhancement factor in semiconductor waveguides,” Optics express, vol. 33, no. 1, pp. 34–49, 2024, doi: 10.1364/oe.538741.
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[171]
2024 | Journal Article | LibreCat-ID: 59663
P. A. Dainone et al., “Controlling the helicity of light by electrical magnetization switching,” Nature, vol. 627, no. 8005, pp. 783–788, 2024, doi: 10.1038/s41586-024-07125-5.
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[170]
2022 | Journal Article | LibreCat-ID: 59668
N. Heermeier et al., “Spin‐Lasing in Bimodal Quantum Dot Micropillar Cavities,” Laser & Photonics Reviews, vol. 16, no. 4, 2022, doi: 10.1002/lpor.202100585.
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[169]
2020 | Journal Article | LibreCat-ID: 59686
Y. Shi et al., “Time-resolved photoluminescence characterization of InGaAs/GaAs nano-ridges monolithically grown on 300 mm Si substrates,” Journal of Applied Physics, vol. 127, no. 10, 2020, doi: 10.1063/1.5139636.
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[168]
2020 | Journal Article | LibreCat-ID: 59685
I. Žutić et al., “Spin-lasers: spintronics beyond magnetoresistance,” Solid State Communications, vol. 316–317, Art. no. 113949, 2020, doi: 10.1016/j.ssc.2020.113949.
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[167]
2020 | Journal Article | LibreCat-ID: 59684
L. Schnitzler, K. Neutsch, F. Schellenberg, M. R. Hofmann, and N. C. Gerhardt, “Confocal laser scanning holographic microscopy of buried structures,” Applied Optics, vol. 60, no. 4, Art. no. A8, 2020, doi: 10.1364/ao.403687.
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[166]
2019 | Conference Paper | LibreCat-ID: 64361
K. Neutsch, M. R. Hofmann, N. C. Gerhardt, L. Schnitzler, and M. J. Tranelis, “Three-dimensional particle localization with common-path digital holographic microscopy,” 2019, doi: 10.1117/12.2509448.
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[165]
2019 | Book Chapter | LibreCat-ID: 64360
N. C. Gerhardt et al., “Semiconductor spin-lasers,” in Nanoscale spintronics and applications, 2019, pp. 499–540.
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[164]
2019 | Journal Article | LibreCat-ID: 59687
M. Lindemann et al., “Ultrafast spin-lasers,” Nature, vol. 568, no. 7751, pp. 212–215, 2019, doi: 10.1038/s41586-019-1073-y.
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[163]
2018 | Conference Paper | LibreCat-ID: 64371
M. R. Hofmann et al., “Brain tissue analysis using texture features based on optical coherence tomography images,” 2018, doi: 10.1117/12.2292032.
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[162]
2018 | Conference Paper | LibreCat-ID: 64372
M. Lenz et al., “Classification of brain tissue with optical coherence tomography by employing texture analysis,” 2018, doi: 10.1117/12.2307701.
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[161]
2018 | Conference Paper | LibreCat-ID: 64376
M. R. Hofmann, N. C. Gerhardt, M. Finkeldey, and L. Göring, “Digital holography for the investigation of buried structures with a common-path reflection microscope,” 2018, doi: 10.1117/12.2289524.
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[160]
2018 | Conference Paper | LibreCat-ID: 64379
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, T. Pusch, R. Michalzik, and S. Scherübl, “Thermally-induced birefringence in VCSELs - approaching the limits,” 2018, doi: 10.1117/12.2306215.
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[159]
2018 | Conference Paper | LibreCat-ID: 64375
M. Lindemann, N. C. Gerhardt, M. Hofmann, T. Pusch, and R. Michalzik, “Demonstrating ultrafast polarization dynamics in spin-VCSELs,” 2018, doi: 10.1117/12.2289560.
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[158]
2018 | Conference Paper | LibreCat-ID: 64378
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, R. Michalzik, and T. Pusch, “Spin lasers for optical data communication,” 2018, doi: 10.1117/12.2306464.
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[157]
2018 | Conference Paper | LibreCat-ID: 64377
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, R. Michalzik, and T. Pusch, “Electrical birefringence tuning of VCSELs,” 2018, doi: 10.1117/12.2295917.
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[156]
2018 | Conference Paper | LibreCat-ID: 64374
N. C. Gerhardt, K. Neutsch, and L. Göring, “Common-path digital holographic microscopy for 3D nanoparticle localization,” 2018, doi: 10.1117/12.2321175.
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[155]
2018 | Conference Paper | LibreCat-ID: 64380
N. C. Gerhardt, G. Xu, and I. Žutić, “Toward ultrafast spin lasers?,” 2018.
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[154]
2018 | Journal Article | LibreCat-ID: 64370
M. Lenz et al., “Automated differentiation between meningioma and healthy brain tissue based on optical coherence tomography ex vivo images using texture features,” Journal of biomedical optics, vol. 23, no. 7, p. 071205, 2018, doi: 10.1117/1.jbo.23.7.071205.
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[153]
2018 | Conference Paper | LibreCat-ID: 64369
V. Besaga, N. C. Gerhardt, M. R. Hofmann, and P. P. Maksimyak, “A direct-view customer-oriented digital holographic camera,” 2018, doi: 10.1117/12.2304923.
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[152]
2017 | Journal Article | LibreCat-ID: 64403
M. Lindemann, N. C. Gerhardt, M. R. (ORCiD: 0000-0003-1265-0003) Hofmann, T. Pusch, E. La Tona, and R. Michalzik, “Thermally induced birefringence tuning of 37 GHz in VCSELs,” 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC 2017), vol. 1, p. 108, 2017, doi: 10.1109/cleoe-eqec.2017.8086349.
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[151]
2017 | Conference Paper | LibreCat-ID: 64402
M. Lenz et al., “Spectroscopic optical coherence tomography for ex vivo brain tumor analysis,” 2017, doi: 10.1117/12.2252141.
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[150]
2017 | Conference Paper | LibreCat-ID: 64399
M. Finkeldey, L. Göring, F. Schellenberg, C. Brenner, N. C. Gerhardt, and M. R. Hofmann, “Multimodal backside imaging of a microcontroller using confocal laser scanning and optical-beam-induced current imaging,” 2017, doi: 10.1117/12.2250912.
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[149]
2017 | Journal Article | LibreCat-ID: 64401
M. Finkeldey, F. Schellenberg, C. Brenner, M. R. Hofmann, N. C. Gerhardt, and L. Göring, “Optical metrology for the investigation of buried technical structures,” Technisches Messen, vol. 85, no. 2, pp. 104–110, 2017, doi: 10.1515/teme-2017-0096.
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[148]
2017 | Conference Paper | LibreCat-ID: 64398
M. N. Cherkashin, C. Brenner, W. D. Putro, B. Döpke, N. C. Gerhardt, and M. R. Hofmann, “Linking transducer transfer function with multi-pulse excitation photoacoustic response,” 2017, doi: 10.1117/12.2254577.
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[147]
2017 | Conference Paper | LibreCat-ID: 64400
M. Lenz et al., “Nondestructive evaluation of protective coatings for the conservation of industrial monuments,” 2017, doi: 10.1117/12.2270170.
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[146]
2017 | Conference Paper | LibreCat-ID: 64397
L. Göring, M. Finkeldey, A. Ad­in­da-Oug­ba, N. C. Gerhardt, and M. Hofmann, “Lensless digital holographic microscope using in-line configuration and laser diode illumination,” 2017, doi: 10.1117/12.2250927.
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[145]
2017 | Journal Article | LibreCat-ID: 64386
M. Lenz et al., “Spectral domain optical coherence tomography for non-destructive testing of protection coatings on metal substrates,” Applied Sciences, vol. 7, no. 4, 2017, doi: 10.3390/app7040364.
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[144]
2017 | Journal Article | LibreCat-ID: 64385
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, T. Pusch, R. Michalzik, and E. La Tona, “Monolithic vertical-cavity surface-emitting laser with thermally tunable birefringence,” Applied physics letters, vol. 110, no. 15, 2017, doi: 10.1063/1.4980025.
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[143]
2017 | Conference Paper | LibreCat-ID: 64393
M. N. Cherkashin, C. Brenner, W. D. Putro, B. Döpke, N. C. Gerhardt, and M. R. Hofmann, “Dynamics of the photoacoustic response of single-element PZT transducers to pulse burst excitation,” 2017, doi: 10.1117/12.2253051.
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[142]
2017 | Journal Article | LibreCat-ID: 64384
M. Finkeldey, L. Göring, C. Brenner, M. Hofmann, and N. C. Gerhardt, “Depth-filtering in common-path digital holographic microscopy,” Optics express, vol. 25, no. 16, pp. 19398–19407, 2017, doi: 10.1364/oe.25.019398.
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[141]
2017 | Conference Paper | LibreCat-ID: 64388
M. Finkeldey, F. Schellenberg, N. C. Gerhardt, M. Hofmann, and L. Göring, “Backside imaging of a microcontroller with common-path digital holography,” 2017, doi: 10.1117/12.2250903.
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[140]
2017 | Conference Paper | LibreCat-ID: 64395
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, T. Pusch, and R. Michalzik, “Investigations on polarization oscillation amplitudes in spin-VCSELs,” 2017, doi: 10.1117/12.2252490.
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[139]
2017 | Journal Article | LibreCat-ID: 64392
M. Finkeldey, C. (ORCiD: 0000-0002-8764-9261) Brenner, N. C. Gerhardt, M. R. Hofmann, and L. Göring, “Digital holographic microscopy of buried specimen using a common-path reflective setup,” DGaO-Proceedings, vol. 118, 2017.
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[138]
2017 | Conference Paper | LibreCat-ID: 64391
V. Besaga, N. C. Gerhardt, M. R. Hofmann, and P. P. Maksimyak, “Common-path holographic objective for conventional photographic camera,” 2017, doi: 10.1117/12.2273890.
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[137]
2017 | Conference Paper | LibreCat-ID: 64394
M. Lindemann, M. R. Hofmann, N. C. Gerhardt, T. Pusch, and R. Michalzik, “High-frequency polarization dynamics in spin-lasers - pushing the limits,” 2017, doi: 10.1117/12.2272972.
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[136]
2016 | Journal Article | LibreCat-ID: 59690
M. Lindemann, T. Pusch, R. Michalzik, N. C. Gerhardt, and M. R. Hofmann, “Frequency tuning of polarization oscillations: Toward high-speed spin-lasers,” Applied Physics Letters, vol. 108, no. 4, 2016, doi: 10.1063/1.4940713.
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[135]
2016 | Preprint | LibreCat-ID: 64425
F. Schellenberg, M. Finkeldey, N. C. Gerhardt, M. R. Hofmann, A. Moradi, and C. Paar, “Large laser spots and fault sensitivity analysis.” 2016.
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[134]
2016 | Journal Article | LibreCat-ID: 64426
M. Lenz et al., “Local bi­na­ry pat­terns for dif­fe­ren­tia­ti­on of brain tis­sue types in­op­ti­cal co­he­rence to­mo­gra­phy ima­ges,” Biomedical engineering, vol. 61, no. Suppl. 1, 2016.
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[133]
2016 | Conference Paper | LibreCat-ID: 64424
F. Schellenberg, M. Finkeldey, N. C. Gerhardt, M. R. Hofmann, A. Moradi, and C. Paar, “Large laser spots and fault sensitivity analysis,” in 2016 IEEE International Symposium on Hardware Oriented Security and Trust (HOST 2016), 2016, pp. 203–208, doi: 10.1109/hst.2016.7495583.
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[132]
2016 | Conference Paper | LibreCat-ID: 64420
M. Finkeldey, F. Schellenberg, N. C. Gerhardt, C. Paar, and M. Hofmann, “Common-path depth-filtered digital holography for high resolution imaging of buried semiconductor structures,” 2016, doi: 10.1117/12.2212454.
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[131]
2016 | Conference Paper | LibreCat-ID: 64423
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, T. Pusch, and R. Michalzik, “Influence of birefringence splitting on ultrafast polarization oscillations in VCSELs,” 2016, doi: 10.1117/12.2212413.
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[130]
2016 | Conference Paper | LibreCat-ID: 64427
N. C. Gerhardt, Jr. Faria, Paulo E., G. Xu, J. Lee, G. M. Sipahi, and I. Žutić, “Microscopic description of a spin laser,” 2016.
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[129]
2016 | Conference Paper | LibreCat-ID: 64422
M. Lindemann, M. R. Hofmann, N. C. Gerhardt, T. Pusch, and R. Michalzik, “Frequency tuning of polarization oscillations in spin-polarized vertical-cavity surface-emitting lasers,” 2016, doi: 10.1117/12.2229358.
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[128]
2016 | Conference Paper | LibreCat-ID: 64419
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, T. Pusch, and R. Michalzik, “Birefringent vertical cavity surface-emitting lasers - toward high-speed spin-lasers,” 2016, doi: 10.1117/12.2229356.
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[127]
2016 | Conference Paper | LibreCat-ID: 64415
C. Brenner, L. Göring, B. Döpke, M. N. Cherkashin, N. C. Gerhardt, and M. R. Hofmann, “Dynamics of double-pulse photoacoustic excitation,” 2016, doi: 10.1117/12.2213476.
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[126]
2016 | Journal Article | LibreCat-ID: 64421
L. Göring, M. Finkeldey, N. C. Gerhardt, and M. R. Hofmann, “Common-path digital holography microscopy of buried semiconductor specimen,” Adaptive Optics: Analysis, Methods & Systems, 2016, doi: 10.1364/3d.2016.jw4a.40.
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[125]
2016 | Conference Paper | LibreCat-ID: 64418
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, M. Bou Sanayeh, R. Mich­al­zik, and T. Pusch, “Birefringence tuning of VCSELs,” 2016, doi: 10.1117/12.2228091.
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[124]
2016 | Conference Paper | LibreCat-ID: 64411
N. C. Gerhardt, M. R. Hofmann, M. Finkeldey, and L. Göring, “Common-path digital holography microscopy of buried semiconductor specimen,” 2016, doi: 10.1364/aoms.2016.jw4a.40.
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[123]
2016 | Conference Paper | LibreCat-ID: 64413
N. C. Gerhardt, M. R. Hofmann, M. Finkeldey, and L. Goring, “Common-path digital holography microscopy of buried semiconductor specimen,” 2016, doi: 10.1364/cosi.2016.jw4a.40.
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[122]
2016 | Conference Paper | LibreCat-ID: 64417
N. C. Gerhardt, M. R. Hofmann, M. Finkeldey, and L. Goring, “Common-path digital holography microscopy of buried semiconductor specimen,” 2016.
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[121]
2016 | Conference Paper | LibreCat-ID: 64416
F. Schellenberg et al., “On the complexity reduction of laser fault injection campaigns using OBIC measurements,” in 2015 Workshop on Fault Diagnosis and Tolerance in Cryptography - FDTC 2015, 2016, pp. 14–27, doi: 10.1109/fdtc.2015.10.
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[120]
2016 | Conference Paper | LibreCat-ID: 64407
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, T. Pusch, and R. Michalzik, “High-frequency operation of spin vertical-cavity surface-emitting lasers - towards 100 GHz,” 2016, doi: 10.1117/12.2237163.
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[119]
2016 | Journal Article | LibreCat-ID: 64406
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, T. Pusch, and R. Michalzik, “Frequency tuning of polarization oscillations in spin-lasers,” Spintronics IX, 2016, doi: 10.1117/12.2237566.
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[118]
2016 | Conference Paper | LibreCat-ID: 64408
N. C. Gerhardt, M. R. Hofmann, M. Finkeldey, and L. Göring, “Common-path digital holography microscopy of buried semiconductor specimen,” 2016, doi: 10.1364/aio.2016.jw4a.40.
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[117]
2016 | Conference Paper | LibreCat-ID: 64409
N. C. Gerhardt, M. R. Hofmann, M. Finkeldey, and L. Göring, “Common-path digital holography microscopy of buried semiconductor specimen,” 2016, doi: 10.1364/math.2016.jw4a.40.
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[116]
2016 | Conference Paper | LibreCat-ID: 64410
N. C. Gerhardt, M. R. Hofmann, M. Finkeldey, and L. Go, “Common-path digital holography microscopy of buried semiconductor specimen,” 2016, doi: 10.1364/isa.2016.jw4a.40.
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[115]
2016 | Conference Paper | LibreCat-ID: 64412
N. C. Gerhardt, M. R. Hofmann, M. Finkeldey, and L. Göring, “Common-path digital holography microscopy of buried semiconductor specimen,” 2016.
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[114]
2015 | Journal Article | LibreCat-ID: 59691
P. E. Faria Junior, G. Xu, J. Lee, N. C. Gerhardt, G. M. Sipahi, and I. Žutić, “Toward high-frequency operation of spin lasers,” Physical Review B, vol. 92, no. 7, Art. no. 075311, 2015, doi: 10.1103/physrevb.92.075311.
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[113]
2015 | Journal Article | LibreCat-ID: 59693
P. E. Faria Junior, G. Xu, J. Lee, N. C. Gerhardt, G. M. Sipahi, and I. Žutić, “Toward high-frequency operation of spin lasers,” Physical Review B, vol. 92, no. 7, Art. no. 075311, 2015, doi: 10.1103/physrevb.92.075311.
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[112]
2015 | Conference Paper | LibreCat-ID: 64444
M. Lindemann, N. C. Gerhardt, M. Hofmann, T. Pusch, and R. Michalzik, “Tu­ning the fre­quen­cy of po­la­riza­t­i­on oscil­la­ti­ons in spin VC­SELs by me­cha­ni­cal strain in­duc­tion in GHz-ran­ge,” 2015.
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[111]
2015 | Conference Paper | LibreCat-ID: 64441
M. Lindemann, N. C. Gerhardt, M. Hofmann, T. Pusch, and R. Michalzik, “Increasing the birefringence of VCSELs beyond 250 GHz,” 2015.
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[110]
2015 | Preprint | LibreCat-ID: 64442
F. Schellenberg et al., “On the complexity reduction of laser fault injection campaigns using OBIC measurements.” 2015.
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[109]
2015 | Journal Article | LibreCat-ID: 64430
A. Ad­in­da-Oug­ba, N. Koukourakis, N. C. Gerhardt, and M. Hofmann, “Simple concept for a wide-field lensless digital holographic microscope using a laser diode,” Current directions in biomedical engineering, vol. 1, no. 1, pp. 261–264, 2015, doi: 10.1515/cdbme-2015-0065.
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[108]
2015 | Conference Paper | LibreCat-ID: 64432
M. N. Cherkashin, C. Brenner, L. Schnitzler, B. Döpke, N. C. Gerhardt, and M. Hofmann, “Laser-diode-based photoacoustic setup to analyze Grüneisen relaxation-effect induced signal enhancement,” 2015, doi: 10.1117/12.2183957.
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[107]
2015 | Conference Paper | LibreCat-ID: 64436
M. Lindemann, H. Höpfner, N. C. Gerhardt, M. R. Hofmann, T. Pusch, and R. Michalzik, “Ultrafast polarization dynamics with controlled polarization oscillations in vertical-cavity surface-emitting lasers,” in Vertical-cavity surface-emitting lasers XIX, 2015, pp. 1–7, doi: 10.1117/12.2076920.
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[106]
2015 | Conference Paper | LibreCat-ID: 64443
M. Lindemann, H. Höpfner, N. C. Gerhardt, M. R. Hofmann, T. Pusch, and R. Michalzik, “Towards high frequency operation of polarization oscillations in spin vertical-cavity surface-emitting lasers,” 2015, doi: 10.1117/12.2197969.
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[105]
2015 | Journal Article | LibreCat-ID: 64435
M. Lindemann, H. Höpfner, N. C. Gerhardt, M. Hofmann, T. Pusch, and R. Michalzik, “Controlling the frequency of ultra-fast polarization oscillations in Spin-VCSELs,” 79. Jahrestagung der DPG und DPG-Frühjahrstagung, 2015.
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[104]
2015 | Conference Paper | LibreCat-ID: 64440
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, T. Pusch, and R. Michalzik, “Tuning the frequency of polarization oscillations in spin-VCSELs by mechanical strain induction,” 2015.
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[103]
2015 | Conference Paper | LibreCat-ID: 64438
M. Lindemann, N. C. Gerhardt, M. R. (ORCiD: 0000-0003-1265-0003) Hofmann, T. Pusch, and R. Michalzik, “Increasing the birefringence of VCSELs beyond 250 GHz,” 2015.
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[102]
2015 | Conference Paper | LibreCat-ID: 64437
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, T. Pusch, and R. Michalzik, “Increasing the birefringence of VCSELs beyond 250 GHz,” 2015.
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[101]
2015 | Conference Paper | LibreCat-ID: 64429
A. Ad­in­da-Oug­ba, N. Koukourakis, F. Mitschker, N. C. Gerhardt, M. Hofmann, and B. Kabir, “Compact low-cost lensless digital holographic microscope for topographic measurements of microstructures in reflection geometry,” in Optical systems design 2015, 2015, pp. 1–8, doi: 10.1117/12.2191073.
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[100]
2015 | Conference Paper | LibreCat-ID: 64433
A. Ad­in­da-Oug­ba, N. Koukourakis, A. Essaidi, N. C. Gerhardt, and M. Hofmann, “Quantitative phase imaging by wide field lensless digital holographic microscope,” in Optical methods for inspection, characterization, and imaging of biomaterials II, 2015, p. 952903, doi: 10.1117/12.2184471.
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[99]
2015 | Journal Article | LibreCat-ID: 64428
M. Lindemann, N. C. Gerhardt, M. Hofmann, T. Pusch, and R. Michalzik, “Vertical-cavity surface-emitting lasers with birefringence splitting above 250 GHz,” Electronics letters, vol. 51, no. 20, pp. 1600–1601, 2015, doi: 10.1049/el.2015.2149.
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[98]
2015 | Conference Paper | LibreCat-ID: 64431
M. Lindemann, H. Höpfner, N. C. Gerhardt, M. Hofmann, T. Pusch, and R. Michalzik, “Controlled switching and frequency tuning of polarization oscillations in vertical-cavity surface-emitting lasers,” in Spintronics VIII, 2015, pp. 1–5, doi: 10.1117/12.2197970.
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[97]
2015 | Conference Paper | LibreCat-ID: 64439
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, T. Pusch, and R. Michalzik, “Tuning the frequency of polarization oscillations in Spin-VCSELs by mechanical strain induction,” 2015.
LibreCat
 
[96]
2014 | Conference Paper | LibreCat-ID: 64453
V. Jaedicke et al., “Performance comparison of different metrics for spectroscopic optical coherence tomography,” in Biomedical applications of light scattering VIII, 2014, pp. 1–10, doi: 10.1117/12.2038891.
LibreCat | DOI
 
[95]
2014 | Conference Paper | LibreCat-ID: 64451
N. Koukourakis et al., “Effects of axial scanning in confocal microscopy employing adaptive lenses (CAL),” 2014, doi: 10.1117/12.2052152.
LibreCat | DOI
 
[94]
2014 | Journal Article | LibreCat-ID: 64448
N. Koukourakis et al., “Axial scanning in confocal microscopy employing adaptive lenses (CAL),” Optics express, vol. 22, no. 5, pp. 6025–6039, 2014, doi: 10.1364/oe.22.006025.
LibreCat | DOI
 
[93]
2014 | Journal Article | LibreCat-ID: 64450
H. Höpfner, M. Lindemann, N. C. Gerhardt, and M. Hofmann, “Controlled switching of ultrafast circular polarization oscillations in spin-polarized vertical-cavity surface-emitting lasers,” Applied physics letters, vol. 104, no. 2, pp. 1–5, 2014, doi: 10.1063/1.4862330.
LibreCat | DOI
 
[92]
2014 | Journal Article | LibreCat-ID: 64452
N. Koukourakis, N. C. Gerhardt, M. R. Hofmann, V. Jädicke, S. Göbel, and H. Welp, “Multiwavelength phase unwrapping and aberration correction using depth filtered digital holography,” Optics letters, vol. 39, no. 14, pp. 4160–4163, 2014, doi: 10.1364/ol.39.004160.
LibreCat | DOI
 
[91]
2014 | Conference Paper | LibreCat-ID: 64449
H. Höpfner, M. Lindemann, N. C. Gerhardt, and M. Hofmann, “Coherent switching of polarization oscillations in vertical-cavity surface-emitting lasers,” in Vertical-cavity surface-emitting lasers XVIII, 2014, pp. 9001–15, doi: 10.1117/12.2039196.
LibreCat | DOI
 
[90]
2014 | Conference Paper | LibreCat-ID: 64447
H. Höpfner, M. Lindemann, N. C. Gerhardt, and M. R. Hofmann, “Spin-controlled ultrafast vertical-cavity surface-emitting lasers,” in Semiconductor lasers and laser dynamics VI, 2014, pp. 1–6, doi: 10.1117/12.2049684.
LibreCat | DOI
 
[89]
2014 | Conference Paper | LibreCat-ID: 64445
N. C. Gerhardt, H. Höpfner, M. Lindemann, and M. R. Hofmann, “Polarization dynamics in spin-polarized vertical-cavity surface-emitting lasers,” in Spintronics VII, 2014, pp. 1–10, doi: 10.1117/12.2063723.
LibreCat | DOI
 
[88]
2014 | Journal Article | LibreCat-ID: 64446
N. Koukourakis et al., “Employing electrically tunable lenses in confocal microscopy for axial scanning,” International C for Optics. Congress , 2014.
LibreCat
 
[87]
2013 | Journal Article | LibreCat-ID: 64466
H. Höpfner et al., “Spin relaxation in spin light-emitting diodes - effects of magnetic field and temperature,” Ultrafast phenomena and nanophotonics XVII, pp. 86230A–1, 2013, doi: 10.1117/12.2001511.
LibreCat | DOI
 
[86]
2013 | Conference Paper | LibreCat-ID: 64460
M. Finkeldey et al., “Optical gain and lasing in GaNAsP/BGa(As)P heterostructures grown on (001) silicon substrate,” 2013.
LibreCat
 
[85]
2013 | Conference Paper | LibreCat-ID: 64464
H. Höpfner et al., “Spin injection and spin relaxation: magnetic field effects,” 2013.
LibreCat
 
[84]
2013 | Conference Paper | LibreCat-ID: 64456
N. C. Gerhardt, M. R. Hofmann, V. Jaedicke, S. Aǧcaer, S. Goebel, and H. Welp, “Spectral analysis and spectroscopic metrics in Spectroscopic Optical Coherence Tomography,” 2013, doi: 10.1364/fio.2013.fw4a.1.
LibreCat | DOI
 
[83]
2013 | Conference Paper | LibreCat-ID: 64459
N. C. Gerhardt et al., “Non-exponential photoluminescence transients in GaNAsP lattice matched to (001) silicon substrate,” 2013.
LibreCat
 
[82]
2013 | Journal Article | LibreCat-ID: 64467
H. Höpfner et al., “Spin relaxation length in quantum dot spin LEDs,” Physica status solidi, vol. 10, no. 9, pp. 1214–1217, 2013, doi: 10.1002/pssc.201200689.
LibreCat | DOI
 
[81]
2013 | Conference Paper | LibreCat-ID: 64468
N. C. Gerhardt et al., “Ultrafast spin-polarized vertical-cavity surface-emitting lasers,” in Spintronics VI, 2013, pp. 8313–80, doi: 10.1117/12.2022720.
LibreCat | DOI
 
[80]
2013 | Journal Article | LibreCat-ID: 64455
N. Koukourakis et al., “Nonexponential photoluminescence transients in a Ga(NAsP) lattice matched to a (001) silicon substrate,” Physical review, vol. 87, no. 3, 2013, doi: 10.1103/physrevb.87.035303.
LibreCat | DOI
 
[79]
2013 | Journal Article | LibreCat-ID: 64457
V. Jaedicke et al., “Comparison of different metrics for analysis and visualization in spectroscopic optical coherence tomography,” Biomedical optics express, vol. 4, no. 12, pp. 2945–2961, 2013, doi: 10.1364/boe.4.002945.
LibreCat | DOI
 
[78]
2013 | Conference Paper | LibreCat-ID: 64461
V. Jaedicke et al., “Quantitative phase analysis through scattering media by depth-filtered digital holography,” in Three-dimensional and multidimensional microscopy, 2013, pp. 85891J-85891J–8, doi: 10.1117/12.2001159.
LibreCat | DOI
 
[77]
2013 | Journal Article | LibreCat-ID: 64458
V. Jaedicke, N. C. Gerhardt, M. Hofmann, S. Agcaer, S. Goebel, and H. Welp, “Contrast enhancement methods in optical coherence tomography using spectral features,” Biomedical engineering, vol. 58, no. Suppl. 1, pp. 1–2, 2013, doi: 10.1515/bmt-2013-4269.
LibreCat | DOI
 
[76]
2013 | Book Chapter | LibreCat-ID: 64462
A. Ludwig et al., “Quantum dot spintronics - fundamentals and applications,” in Magnetic nanostructures, 2013, pp. 235–268.
LibreCat | DOI
 
[75]
2013 | Dissertation | LibreCat-ID: 64454
N. C. Gerhardt and F. für Elektrotechnik und Informationstechnik, “More than Moore” - novel photonic concepts for information technology. 2013.
LibreCat
 
[74]
2013 | Conference Paper | LibreCat-ID: 64465
H. Höpfner et al., “Spin injection, transport, and relaxation in spin light-emitting diodes - magnetic field effects,” in Spintronics VI, 2013, pp. 8813–43, doi: 10.1117/12.2023324.
LibreCat | DOI
 
[73]
2012 | Conference Paper | LibreCat-ID: 64476
N. Koukourakis et al., “Photoluminescence and optical gain of Ga(NAsP) heterostructures pseudomorphically grown on silicon (001) substrate,” in Silicon photonics VII, 2012, pp. 1–6, doi: 10.1117/12.907677.
LibreCat | DOI
 
[72]
2012 | Conference Paper | LibreCat-ID: 64477
H. Höpfner et al., “Room temperature spin relaxation in quantum dot based spin-optoelectronic devices,” in Ultrafast phenomena and nanophotonics XVI, 2012, pp. 1–7, doi: 10.1117/12.907821.
LibreCat | DOI
 
[71]
2012 | Journal Article | LibreCat-ID: 64485
N. Koukourakis et al., “Time-resolved photoluminescence and optical gain in Ga(NAsP) pseudomorphically grown on silicon,” 76th Jahrestagung der DPG (76th annual conference of the DPG) and DPG-Frühjahrstagung (spring meeting) of the Condensed Matter Section (SKM) with further DPG Divisions: Environmental Physics, Microprobes, Radiation and Medical Physics, as well as the DPG working groups: Energy, Equal Opportunities, Industry and Business, Information, Philosophy of Physics, Physics and Disarmament, young DPG, 2012.
LibreCat
 
[70]
2012 | Journal Article | LibreCat-ID: 64483
H. Höpfner et al., “Temperature dependence of the spin relaxation length in spin quantum dot LEDs,” 76th Jahrestagung der DPG (76th annual conference of the DPG) and DPG-Frühjahrstagung (spring meeting) of the Condensed Matter Section (SKM) with further DPG Divisions: Environmental Physics, Microprobes, Radiation and Medical Physics, as well as the DPG working groups: Energy, Equal Opportunities, Industry and Business, Information, Philosophy of Physics, Physics and Disarmament, young DPG, 2012.
LibreCat
 
[69]
2012 | Journal Article | LibreCat-ID: 64482
V. Jaedicke et al., “System development for spectroscopic optical coherence tomography,” Biomedical engineering, vol. 57, no. Heft SI-1 Track-B, p. 327, 2012, doi: 10.1515/bmt-2012-4245.
LibreCat | DOI
 
[68]
2012 | Journal Article | LibreCat-ID: 64481
N. C. Gerhardt and M. Hofmann, “Spin-controlled vertical-cavity surface-emitting lasers,” Advances in optical technologies, pp. 268949-1-268949–15, 2012, doi: 10.1155/2012/268949.
LibreCat | DOI
 
[67]
2012 | Conference Paper | LibreCat-ID: 64470
M. Li, N. C. Gerhardt, M. Hofmann, and T. Ackemann, “Analysis of birefringence controlled ultrafast polarization oscillations in spin vertical-cavity surface-emitting lasers,” in EOS annual meeting 2012 (EOSAM 2012), 2012, pp. 104–107.
LibreCat
 
[66]
2012 | Journal Article | LibreCat-ID: 64480
H. Höpfner et al., “Spin relaxation dynamics in spin-LEDs,” 76th Jahrestagung der DPG (76th annual conference of the DPG) and DPG-Frühjahrstagung (spring meeting) of the Condensed Matter Section (SKM) with further DPG Divisions: Environmental Physics, Microprobes, Radiation and Medical Physics, as well as the DPG working groups: Energy, Equal Opportunities, Industry and Business, Information, Philosophy of Physics, Physics and Disarmament, young DPG, 2012.
LibreCat
 
[65]
2012 | Journal Article | LibreCat-ID: 64472
H. Soldat et al., “Erratum: ‘Room temperature spin relaxation length in spin light-emitting diodes’ - [Appl. Phys. Lett. 99, 051102 (2011)],” Applied physics letters, vol. 100, no. 26, pp. 269902–1, 2012, doi: 10.1063/1.4728990.
LibreCat | DOI
 
[64]
2012 | Journal Article | LibreCat-ID: 64473
N. Koukourakis et al., “High room-temperature optical gain in Ga(NAsP)/Si heterostructures,” Applied physics letters, vol. 100, no. 9, pp. 092107-1-092107–3, 2012, doi: 10.1063/1.3690886.
LibreCat | DOI
 
[63]
2012 | Journal Article | LibreCat-ID: 64474
H. Höpfner et al., “Magnetic field dependence of the spin relaxation length in spin light-emitting diodes,” Applied physics letters, vol. 101, no. 11, pp. 112402-1-112402–4, 2012, doi: 10.1063/1.4752162.
LibreCat | DOI
 
[62]
2012 | Journal Article | LibreCat-ID: 64471
N. Koukourakis et al., “Depth-filtered digital holography,” Optics express, vol. 20, no. 20, pp. 22636–22648, 2012, doi: 10.1364/oe.20.022636.
LibreCat | DOI
 
[61]
2012 | Conference Paper | LibreCat-ID: 64478
V. Jaedicke et al., “Signal processing for spectroscopic optical coherence tomography,” in Proceedings of the 7th International Workshop on Biosignal Interpretation (BSI2012), 2012, pp. 224–227.
LibreCat
 
[60]
2012 | Journal Article | LibreCat-ID: 64475
M. Beckmann, C.-S. Friedrich, M. Mienkina, N. C. Gerhardt, M. Hofmann, and G. Schmitz, “Multispectral photoacoustic coded excitation using pseudorandom codes - 82231E,” Photons plus ultrasound, pp. 82231E-1-82231E–8, 2012, doi: 10.1117/12.907427.
LibreCat | DOI
 
[59]
2011 | Conference Paper | LibreCat-ID: 64497
N. C. Gerhardt et al., “Time-resolved photoluminescence and optical gain of Ga(NAsP) heterostructures pseudomorphically grown on silicon (001) substrate,” in 2011 13th International Conference on Transparent Optical Networks (ICTON 2011), 2011, vol. 1, pp. 111–114, doi: 10.1109/icton.2011.5970794.
LibreCat | DOI
 
[58]
2011 | Journal Article | LibreCat-ID: 64492
M. Li, H. Jähme, H. Soldat, N. C. Gerhardt, M. Hofmann, and T. Ackemann, “Birefringence and spin controlled ultrafast polarization oscillations in vertical-cavity surface-emitting lasers,” 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO Europe/EQEC 2011), p. 109, 2011, doi: 10.1109/cleoe.2011.5942549.
LibreCat | DOI
 
[57]
2011 | Conference Paper | LibreCat-ID: 64494
M. Beckmann, M. Mienkina, C.-S. Friedrich, N. C. Gerhardt, M. Hofmann, and G. Schmitz, “Photoacoustic coded excitation using periodically perfect sequences,” in 2011 IEEE International Ultrasonics Symposium (IUS 2011), 2011, vol. 2, pp. 1179–1182, doi: 10.1109/ultsym.2011.0290.
LibreCat | DOI
 
[56]
2011 | Conference Paper | LibreCat-ID: 64486
N. C. Gerhardt et al., “Modal gain and time-resolved photoluminescence of Ga(NAsP) heterostructures pseudomorphically grown on Silicon (001) substrate,” 2011.
LibreCat
 
[55]
2011 | Conference Paper | LibreCat-ID: 64487
N. C. Gerhardt et al., “Modal gain and time-resolved photoluminescence of Ga(NAsP) heterostructures pseudomorphically grown on silicon (001) substrate,” 2011.
LibreCat
 
[54]
2011 | Conference Paper | LibreCat-ID: 64496
C.-S. Friedrich et al., “Quantitative photoacoustic blood oxygenation measurement of whole porcine blood samples using a multi-wavelength semiconductor laser system,” in Diffuse optical imaging III, 2011, pp. 1–9, doi: 10.1117/12.889682.
LibreCat | DOI
 
[53]
2011 | Journal Article | LibreCat-ID: 64495
N. Koukourakis et al., “Photorefractive two-wave mixing for image amplification in digital holography,” Optics express, vol. 19, no. 22, pp. 22004–22023, 2011, doi: 10.1364/oe.19.022004.
LibreCat | DOI
 
[52]
2011 | Conference Paper | LibreCat-ID: 64493
M. Mienkina, C.-S. Friedrich, N. C. Gerhardt, M. Hofmann, G. Schmitz, and A. Eder, “Ex­pe­ri­men­tal eva­lua­ti­on of mul­tis­pec­tral pho­toa­coustic coded ex­ci­ta­ti­on using or­tho­go­nal uni­po­lar golay codes,” 2011.
LibreCat
 
[51]
2011 | Conference Paper | LibreCat-ID: 64488
N. C. Gerhardt et al., “Modal gain and time-resolved photoluminescence of Ga(NAsP) heterostructures pseudomorphically grown on silicon (001) substrate,” 2011.
LibreCat
 
[50]
2011 | Conference Paper | LibreCat-ID: 64489
C. Brenner et al., “Quantitative photoacoustic blood oxygenation measurement of whole porcine blood samples using a multi-wavelength semiconductor laser system,” 2011.
LibreCat
 
[49]
2011 | Conference Paper | LibreCat-ID: 64491
N. C. Gerhardt et al., “Modal gain and time-resolved photoluminescence of Ga(NAsP) heterostructures pseudomorphically grown on silicon (001) substrate,” 2011.
LibreCat
 
[48]
2011 | Conference Paper | LibreCat-ID: 64490
N. C. Gerhardt et al., “Spectroscopic optical coherence tomography for substance identification,” 2011.
LibreCat
 
[47]
2010 | Journal Article | LibreCat-ID: 64505
M. Mienkina et al., “Multispectral photoacoustic coded excitation imaging using unipolar orthogonal Golay codes,” Optics express, vol. 18, no. 9, pp. 9076–9087, 2010, doi: 10.1364/oe.18.009076.
LibreCat | DOI
 
[46]
2010 | Journal Article | LibreCat-ID: 64502
R. Y. W. Lai et al., “Integrity of micro-hotplates during high-temperature operation monitored by digital holographic microscopy,” Journal of microelectromechanical systems, vol. 19, no. 5, pp. 1175–1179, 2010, doi: 10.1109/jmems.2010.2067442.
LibreCat | DOI
 
[45]
2010 | Journal Article | LibreCat-ID: 64500
M. Mienkina, C.-S. Friedrich, N. C. Gerhardt, W. G. Wilkening, M. Hofmann, and G. Schmitz, “Experimental evaluation of photoacoustic coded excitation using unipolar golay codes,” IEEE transactions on ultrasonics, ferroelectrics, and frequency control, vol. 57, no. 7, pp. 1583–1593, 2010, doi: 10.1109/tuffc.2010.1588.
LibreCat | DOI
 
[44]
2010 | Conference Paper | LibreCat-ID: 64501
N. C. Gerhardt, M. Li, H. Jähme, H. Soldat, M. R. Hofmann, and T. Ackemann, “Gigahertz circular polarization oscillations in spin-polarized vertical-cavity surface-emitting lasers,” in Conference on Lasers and Electro-Optics (CLEO) and Quantum Electronics and Laser Science Conference (QELS), 2010, 2010, pp. 1–2, doi: 10.1364/cleo.2010.cme6.
LibreCat | DOI
 
[43]
2010 | Conference Paper | LibreCat-ID: 64503
N. Koukourakis et al., “Modal gain analysis of GaNAsP heterostructures on silicon,” 2010, doi: 10.1364/fio.2010.jwa56.
LibreCat | DOI
 
[42]
2010 | Conference Paper | LibreCat-ID: 64506
V. Jaedicke, C. T. Kasseck, N. C. Gerhardt, M. Hofmann, and H. Welp, “Substance identification in spectroscopic optical coherence tomograhpy using pattern recognition,” 2010, doi: 10.1364/fio.2010.ftuy2.
LibreCat | DOI
 
[41]
2010 | Conference Paper | LibreCat-ID: 64499
N. C. Gerhardt, M. R. Hofmann, N. Koukourakis, and Y. W. Lai, “Photorefractive two-wave mixing for image amplification in digital holography,” 2010, doi: 10.1364/fio.2010.fthbb5.
LibreCat | DOI
 
[40]
2010 | Conference Paper | LibreCat-ID: 64504
M. Beckmann, M. Mienkina, G. Schmitz, C.-S. Friedrich, N. C. Gerhardt, and M. R. Hofmann, “Monospectral photoacoustic imaging using Legendre sequences,” in 2010 IEEE International Ultrasonics Symposium (IUS), 2010, vol. 1, pp. 386–389, doi: 10.1109/ultsym.2010.5935648.
LibreCat | DOI
 
[39]
2010 | Conference Paper | LibreCat-ID: 64498
N. C. Gerhardt et al., “Modal gain analysis of GaNAsP heterostructures on silicon,” 2010.
LibreCat
 
[38]
2009 | Journal Article | LibreCat-ID: 64520
N. C. Gerhardt et al., “Op­ti­cal ve­ri­fi­ca­ti­on of gain in Ga(NAsP)/(BGa)(AsP) mul­ti-quan­tum-well he­te­rost­ruc­tu­res mo­no­li­thi­cal­ly grown lat­ti­ce-mat­ched on (001) si­li­con sub­stra­te,” Papers presented at the 35th International Symposium on Compound Semiconductors (ISCS 2008), Rust, Germany, 21 - 24 September 2008, pp. 1349–1523, 2009.
LibreCat
 
[37]
2009 | Conference Paper | LibreCat-ID: 64514
N. C. Gerhardt et al., “Gain characteristics and lasing of Ga(NAsP) multi-quantum well structures,” in Papers presented at the 9th International Workshop on Nonlinear Optics and Excitation Kinetics in Semiconductors (NOEKS 9), 2009, pp. 576–578, doi: 10.1002/pssc.200880360.
LibreCat | DOI
 
[36]
2009 | Conference Paper | LibreCat-ID: 64519
N. Koukourakis et al., “New concepts for depth resolved holographic imaging based on spectrally tunable diode lasers,” in Conference on Lasers and Electro-Optics, 2009 and 2009 Quantum Electronics and Laser Science Conference, 2009, pp. 1253–1254, doi: 10.1364/cleo.2009.ctuaa2.
LibreCat | DOI
 
[35]
2009 | Conference Paper | LibreCat-ID: 64517
N. C. Gerhardt et al., “Lasing of the III/V compound semiconductor Ga(NAsP) integrated lattice-matched to Si substrate,” in Group IV Photonics, 2009, pp. 199–201, doi: 10.1109/group4.2009.5338394.
LibreCat | DOI
 
[34]
2009 | Journal Article | LibreCat-ID: 64511
N. Koukourakis et al., “Depth resolved holographic imaging with variable depth resolution using spectrally tunable diode laser,” Electronics letters, vol. 45, no. 1, pp. 46–48, 2009, doi: 10.1049/el:20092390.
LibreCat | DOI
 
[33]
2009 | Conference Paper | LibreCat-ID: 64523
C. Kasseck et al., “Three-dimensional bone imaging: optical coherence tomography versus micro computer tomography,” in Optical coherence tomography and coherence techniques IV, 2009, p. 73721B, doi: 10.1117/12.831814.
LibreCat | DOI
 
[32]
2009 | Journal Article | LibreCat-ID: 64521
N. Koukourakis, C. Kasseck, N. C. Gerhardt, M. Hofmann, and D. Rytz, “Single-shot holography for depth resolved three dimensional imaging,” Optics express, vol. 17, no. 23, pp. 21015–21029, 2009, doi: 10.1364/oe.17.021015.
LibreCat | DOI
 
[31]
2009 | Conference Paper | LibreCat-ID: 64518
M. Mienkina, C.-S. Friedrich, N. C. Gerhardt, M. Hofmann, and G. Schmitz, “Multispectral photoacoustic coded excitation using orthogonal unipolar golay codes,” in Diagnostic imaging, 2009, pp. 217–220, doi: 10.1007/978-3-642-03879-2_61.
LibreCat | DOI
 
[30]
2009 | Conference Paper | LibreCat-ID: 64516
N. C. Gerhardt et al., “Lasing in optically pumped Ga(NAsP)/(BGa)(AsP) heterstructures on Silicon,” in Conference on Lasers and Electro-Optics, 2009 and 2009 Quantum Electronics and Laser Science Conference, 2009, pp. 1–2, doi: 10.1364/cleo.2009.ctuy2.
LibreCat | DOI
 
[29]
2009 | Conference Paper | LibreCat-ID: 64515
N. C. Gerhardt et al., “Laser operation of III/V compound material Ga(NAsP) grown lattice-matched on (001) Si substrate,” in Device Research Conference, 2009, pp. 193–194, doi: 10.1109/drc.2009.5354936.
LibreCat | DOI
 
[28]
2009 | Conference Paper | LibreCat-ID: 64513
M. Mienkina, G. Schmitz, C.-S. Friedrich, N. C. Gerhardt, M. Hofmann, and A. Eder, “Feasibility study of multispectral photoacoustic coded excitation using orthogonal unipolar Golay codes,” in 2009 IEEE Ultrasonics Symposium, 2009, vol. 1, pp. 108–111, doi: 10.1109/ultsym.2009.5441941.
LibreCat | DOI
 
[27]
2009 | Journal Article | LibreCat-ID: 64512
M. Mienkina, C.-S. Friedrich, K. Hensel, N. C. Gerhardt, M. Hofmann, and G. Schmitz, “Evaluation of Ferucarbotran (Resovist®) as a photoacoustic contrast agent,” Biomedical engineering, vol. 54, no. 2, pp. 83–88, 2009, doi: 10.1515/bmt.2009.012.
LibreCat | DOI
 
[26]
2009 | Conference Paper | LibreCat-ID: 64522
S. Hövel et al., “Spin-con­trol­led op­to­elec­tro­nic de­vices,” in Papers presented at the 9th International Workshop on Nonlinear Optics and Excitation Kinetics in Semiconductors (NOEKS 9), 2009, pp. 436–439, doi: 10.1002/pssc.200880357.
LibreCat | DOI
 
[25]
2009 | Conference Paper | LibreCat-ID: 64509
C.-S. Friedrich, M. Mienkina, N. C. Gerhardt, G. Schmitz, M. Hofmann, and M.-C. Wawreczko, “Compact semiconductor laser sources for photoacoustic imaging,” in Photons plus ultrasound, 2009, pp. 1–7, doi: 10.1117/12.809261.
LibreCat | DOI
 
[24]
2009 | Conference Paper | LibreCat-ID: 64510
M. Mienkina, C.-S. Friedrich, N. C. Gerhardt, M. R. Hofmann, G. Schmitz, and A. Eder, “Comparison of coding techniques for photoacoustic coded excitation,” in Proceedings, 2009, vol. 1, pp. 313–316.
LibreCat
 
[23]
2008 | Conference Paper | LibreCat-ID: 64524
C.-S. Friedrich, N. C. Gerhardt, M. Hofmann, G. Schmitz, M. P. Mienkina, and A. Eder, “Evaluation of simplex codes for photoacoustic coded excitation,” in 4th European Conference of the International Federation for Medical and Biological Engineering, 2008, vol. 1, pp. 444–447, doi: 10.1007/978-3-540-89208-3_105.
LibreCat | DOI
 
[22]
2008 | Conference Paper | LibreCat-ID: 64525
M. Mienkina, C.-S. Friedrich, N. C. Gerhardt, M. Hofmann, G. Schmitz, and A. Eder, “Simulation study of photoacoustic coded excitation using Golay codes,” in IEEE Ultrasonics Symposium, 2008, 2008, pp. 1242–1245, doi: 10.1109/ultsym.2008.0300.
LibreCat | DOI
 
[21]
2007 | Conference Paper | LibreCat-ID: 64527
M. Breede, C. Kasseck, C. Brenner, N. C. Gerhardt, M. Hofmann, and R. Höfling, “External-cavity diode laser utilizing a micromirror device for spectral tuning,” in Optical measurement systems for industrial inspection V, 2007, pp. 1–11, doi: 10.1117/12.726825.
LibreCat | DOI
 
[20]
2007 | Journal Article | LibreCat-ID: 64528
M. Breede, C. Kasseck, C. Brenner, N. C. Gerhardt, M. Hofmann, and R. Höfling, “Micromirror device controlled tunable diode laser,” Electronics letters, vol. 43, no. 8, pp. 456–457, 2007, doi: 10.1049/el:20073651.
LibreCat | DOI
 
[19]
2007 | Conference Paper | LibreCat-ID: 64529
M. Mienkina et al., “Photoacoustic imaging of Fibrosarcoma using RGD-Cy 3 as a targeted contrast agent,” in IEEE Ultrasonics Symposium, 2007, 2007, vol. 5, pp. 2409–2412, doi: 10.1109/ultsym.2007.606.
LibreCat | DOI
 
[18]
2007 | Journal Article | LibreCat-ID: 64526
M. Mienkina et al., “Evaluation eines kommerziellen Ultraschallgeräts für den Einsatz im photoakustischen Reflexionsmodus,” Biomedical engineering, vol. 52, no. S1, pp. G2-1, 2007.
LibreCat
 
[17]
2007 | Journal Article | LibreCat-ID: 64531
S. Hövel et al., “Spin-controlled LEDs and VCSELs,” Physica status solidi, vol. 204, no. 2, pp. 500–507, 2007, doi: 10.1002/pssa.200673219.
LibreCat | DOI
 
[16]
2007 | Conference Paper | LibreCat-ID: 64530
C. Kasseck, N. C. Gerhardt, M. Hofmann, and K. Lehmann, “Spectroscopic fourier domain optical coherence tomography,” in Optical coherence tomography and coherence techniques III, 2007, pp. 1–9, doi: 10.1117/12.728416.
LibreCat | DOI
 
[15]
2006 | Dissertation | LibreCat-ID: 64534
N. C. Gerhardt and F. für Elektrotechnik und Informationstechnik, Optische Verstärkung und Spin-kontrollierte Emission von Halbleiterlasern. 2006.
LibreCat
 
[14]
2006 | Journal Article | LibreCat-ID: 64533
M. Mienkina et al., “Experimentelle Charakterisierung von Ferucarbotran als photoakustisches Kontrastmittel,” Biomedical engineering, vol. 51, no. Suppl., pp. 1–2, 2006.
LibreCat
 
[13]
2006 | Conference Paper | LibreCat-ID: 64532
M. Mienkina et al., “Experimental characterization of ferucarbotran (Resovist ®) as a photoacoustic nanoparticle contrast agent,” in Proceedings, 2006, vol. 1, pp. 393–396, doi: 10.1109/ultsym.2006.111.
LibreCat | DOI
 
[12]
2005 | Conference Paper | LibreCat-ID: 64536
N. C. Gerhardt et al., “Spin-controlled LEDs and VCSELs,” in Physics and simulation of optoelectronic devices XIII, 2005, pp. 221–229, doi: 10.1117/12.590346.
LibreCat | DOI
 
[11]
2005 | Journal Article | LibreCat-ID: 64535
N. C. Gerhardt et al., “Electron spin injection into GaAs from ferromagnetic contacts in remanence,” Applied physics letters, vol. 87, no. 3, pp. 1–3, 2005, doi: 10.1063/1.1996843.
LibreCat | DOI
 
[10]
2003 | Conference Paper | LibreCat-ID: 64538
M. Hofmann and N. C. Gerhardt, “Gain and emission dynamics of dilute nitride quantum well lasers,” 2003, doi: 10.1364/fio.2003.thn1.
LibreCat | DOI
 
[9]
2003 | Conference Paper | LibreCat-ID: 64539
N. C. Gerhardt et al., “Optical gain of 1.3 μm (GaIn)(NAs)/GaAs lasers - a comparison between theory and experiment,” 2003.
LibreCat
 
[8]
2003 | Journal Article | LibreCat-ID: 64540
N. C. Gerhardt, M. Hofmann, and W. W. Rühle, “Optical spectroscopy of 1.3 μm (GaIn)(NAs)/GaAs lasers,” IEE proceedings, vol. 150, no. 1, pp. 45–48, 2003, doi: 10.1049/ip-opt:20030035.
LibreCat | DOI
 
[7]
2003 | Conference Paper | LibreCat-ID: 64537
N. C. Gerhardt and M. R. Hofmann, “Experimentelle Methoden zur Bestimmung der optischen Verstärkung von 1.3µm (GaIn)(NAs)/GaAs Halbleiterlasern,” 2003.
LibreCat
 
[6]
2002 | Journal Article | LibreCat-ID: 64541
M. Hofmann et al., “Emission dynamics and optical gain of 1.3 \mum (GaIn)(NAs)/GaAs Lasers,” IEEE journal of quantum electronics / Institute of Electrical and Electronics Engineers, vol. 38, no. 2, pp. 213–221, 2002, doi: 10.1109/3.980275.
LibreCat | DOI
 
[5]
2002 | Conference Paper | LibreCat-ID: 64542
N. C. Gerhardt et al., “Influence of growth conditions on the optical gain of 1.3 /spl mu/m (GaIn)(NAs)/GaAs lasers,” in Conference digest, 2002, pp. 85–86, doi: 10.1109/islc.2002.1041130.
LibreCat | DOI
 
[4]
2001 | Conference Paper | LibreCat-ID: 64543
M. Hofmann et al., “Emission dynamics of (GaIn)(NAs)/GaAs lasers emitting at 1.3 μm,” in Physics and simulation of optoelectronic devices IX, 2001, pp. 256–266, doi: 10.1117/12.432573.
LibreCat | DOI
 
[3]
2001 | Conference Paper | LibreCat-ID: 64545
M. R. Hofmann et al., “Optische Verstärkung von (GaIn)(NAs)/GaAs Halbleiterlasern,” 2001.
LibreCat
 
[2]
2001 | Conference Paper | LibreCat-ID: 64546
M. Hofmann et al., “Physics of 1.3µm (GaIn)(NAs)/GaAs semiconductor lasers,” in LEOS 2001, 2001, vol. 1, pp. 326–327, doi: 10.1109/leos.2001.969307.
LibreCat | DOI
 
[1]
2001 | Book Chapter | LibreCat-ID: 64547
D. Hägele et al., “Spintronics - Spin electronics and optoelectronics in semiconductors,” in Advances in Solid State Physics 41, 2001, pp. 173–186.
LibreCat | DOI
 
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[180]
2025 | Journal Article | LibreCat-ID: 61932
N. N. Ledentsov et al., “VCSELs: Influence of Design on Performance and Data Transmission over Multi-Mode and Single-Mode Fibers,” Photonics, vol. 12, no. 10, Art. no. 1037, 2025, doi: 10.3390/photonics12101037.
LibreCat | DOI
 
[179]
2025 | Journal Article | LibreCat-ID: 61931
U. Diiankova et al., “Multimode vertical-cavity surface-emitting lasers under spin injection,” APL Photonics, vol. 10, no. 10, Art. no. 106120, 2025, doi: 10.1063/5.0286998.
LibreCat | DOI
 
[178]
2025 | Journal Article | LibreCat-ID: 64551
M. Lindemann et al., “Laterally coupled vertical-cavity surface-emitting lasers with                    tunable resonance width and frequency,” Journal of Applied Physics, vol. 138, no. 5, Art. no. 053102, 2025, doi: 10.1063/5.0275622.
LibreCat | DOI
 
[177]
2025 | Conference Paper | LibreCat-ID: 64293
N. C. Gerhardt, M. R. Hofmann, L. Zens, J. Möller, and V. Besaga, “Quantitative holography for the characterisation of semiconductor amplifieres and lasers,” 2025, doi: 10.1117/12.3041318.
LibreCat | DOI
 
[176]
2024 | Journal Article | LibreCat-ID: 64550
L. Zens, V. Besaga, J. Möller, N. C. Gerhardt, and M. Hofmann, “Holographic measurement of gain and linewidth enhancement factor in semiconductor waveguides,” Optics Express, 2024, doi: 10.1364/oe.538741.
LibreCat | DOI
 
[175]
2024 | Journal Article | LibreCat-ID: 64585
M. Lindemann et al., “Controlling the helicity of light by electrical magnetization switching,” Nature, vol. 627, no. 8005, pp. 783–788, 2024, doi: 10.1038/s41586-024-07125-5.
LibreCat | DOI
 
[174]
2024 | Journal Article | LibreCat-ID: 64549
L. Zens, V. Besaga, J. Möller, N. C. Gerhardt, and M. Hofmann, “Holographic measurement of gain and linewidth enhancement factor in semiconductor waveguides,” Optics Express, 2024, doi: 10.1364/oe.538741.
LibreCat | DOI
 
[173]
2024 | Conference Paper | LibreCat-ID: 64296
M. Lindemann et al., “Study of Electrically Excited Photon-Photon Resonances in Self-Injection-Locked Coupled-Cavity VCSELs,” 2024, doi: 10.1109/islc57752.2024.10717381.
LibreCat | DOI
 
[172]
2024 | Journal Article | LibreCat-ID: 64295
L. Zens, V. Besaga, J. Möller, N. C. Gerhardt, and M. R. Hofmann, “Holographic measurement of gain and linewidth enhancement factor in semiconductor waveguides,” Optics express, vol. 33, no. 1, pp. 34–49, 2024, doi: 10.1364/oe.538741.
LibreCat | DOI
 
[171]
2024 | Journal Article | LibreCat-ID: 59663
P. A. Dainone et al., “Controlling the helicity of light by electrical magnetization switching,” Nature, vol. 627, no. 8005, pp. 783–788, 2024, doi: 10.1038/s41586-024-07125-5.
LibreCat | DOI
 
[170]
2022 | Journal Article | LibreCat-ID: 59668
N. Heermeier et al., “Spin‐Lasing in Bimodal Quantum Dot Micropillar Cavities,” Laser & Photonics Reviews, vol. 16, no. 4, 2022, doi: 10.1002/lpor.202100585.
LibreCat | DOI
 
[169]
2020 | Journal Article | LibreCat-ID: 59686
Y. Shi et al., “Time-resolved photoluminescence characterization of InGaAs/GaAs nano-ridges monolithically grown on 300 mm Si substrates,” Journal of Applied Physics, vol. 127, no. 10, 2020, doi: 10.1063/1.5139636.
LibreCat | DOI
 
[168]
2020 | Journal Article | LibreCat-ID: 59685
I. Žutić et al., “Spin-lasers: spintronics beyond magnetoresistance,” Solid State Communications, vol. 316–317, Art. no. 113949, 2020, doi: 10.1016/j.ssc.2020.113949.
LibreCat | DOI
 
[167]
2020 | Journal Article | LibreCat-ID: 59684
L. Schnitzler, K. Neutsch, F. Schellenberg, M. R. Hofmann, and N. C. Gerhardt, “Confocal laser scanning holographic microscopy of buried structures,” Applied Optics, vol. 60, no. 4, Art. no. A8, 2020, doi: 10.1364/ao.403687.
LibreCat | DOI
 
[166]
2019 | Conference Paper | LibreCat-ID: 64361
K. Neutsch, M. R. Hofmann, N. C. Gerhardt, L. Schnitzler, and M. J. Tranelis, “Three-dimensional particle localization with common-path digital holographic microscopy,” 2019, doi: 10.1117/12.2509448.
LibreCat | DOI
 
[165]
2019 | Book Chapter | LibreCat-ID: 64360
N. C. Gerhardt et al., “Semiconductor spin-lasers,” in Nanoscale spintronics and applications, 2019, pp. 499–540.
LibreCat
 
[164]
2019 | Journal Article | LibreCat-ID: 59687
M. Lindemann et al., “Ultrafast spin-lasers,” Nature, vol. 568, no. 7751, pp. 212–215, 2019, doi: 10.1038/s41586-019-1073-y.
LibreCat | DOI
 
[163]
2018 | Conference Paper | LibreCat-ID: 64371
M. R. Hofmann et al., “Brain tissue analysis using texture features based on optical coherence tomography images,” 2018, doi: 10.1117/12.2292032.
LibreCat | DOI
 
[162]
2018 | Conference Paper | LibreCat-ID: 64372
M. Lenz et al., “Classification of brain tissue with optical coherence tomography by employing texture analysis,” 2018, doi: 10.1117/12.2307701.
LibreCat | DOI
 
[161]
2018 | Conference Paper | LibreCat-ID: 64376
M. R. Hofmann, N. C. Gerhardt, M. Finkeldey, and L. Göring, “Digital holography for the investigation of buried structures with a common-path reflection microscope,” 2018, doi: 10.1117/12.2289524.
LibreCat | DOI
 
[160]
2018 | Conference Paper | LibreCat-ID: 64379
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, T. Pusch, R. Michalzik, and S. Scherübl, “Thermally-induced birefringence in VCSELs - approaching the limits,” 2018, doi: 10.1117/12.2306215.
LibreCat | DOI
 
[159]
2018 | Conference Paper | LibreCat-ID: 64375
M. Lindemann, N. C. Gerhardt, M. Hofmann, T. Pusch, and R. Michalzik, “Demonstrating ultrafast polarization dynamics in spin-VCSELs,” 2018, doi: 10.1117/12.2289560.
LibreCat | DOI
 
[158]
2018 | Conference Paper | LibreCat-ID: 64378
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, R. Michalzik, and T. Pusch, “Spin lasers for optical data communication,” 2018, doi: 10.1117/12.2306464.
LibreCat | DOI
 
[157]
2018 | Conference Paper | LibreCat-ID: 64377
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, R. Michalzik, and T. Pusch, “Electrical birefringence tuning of VCSELs,” 2018, doi: 10.1117/12.2295917.
LibreCat | DOI
 
[156]
2018 | Conference Paper | LibreCat-ID: 64374
N. C. Gerhardt, K. Neutsch, and L. Göring, “Common-path digital holographic microscopy for 3D nanoparticle localization,” 2018, doi: 10.1117/12.2321175.
LibreCat | DOI
 
[155]
2018 | Conference Paper | LibreCat-ID: 64380
N. C. Gerhardt, G. Xu, and I. Žutić, “Toward ultrafast spin lasers?,” 2018.
LibreCat
 
[154]
2018 | Journal Article | LibreCat-ID: 64370
M. Lenz et al., “Automated differentiation between meningioma and healthy brain tissue based on optical coherence tomography ex vivo images using texture features,” Journal of biomedical optics, vol. 23, no. 7, p. 071205, 2018, doi: 10.1117/1.jbo.23.7.071205.
LibreCat | DOI
 
[153]
2018 | Conference Paper | LibreCat-ID: 64369
V. Besaga, N. C. Gerhardt, M. R. Hofmann, and P. P. Maksimyak, “A direct-view customer-oriented digital holographic camera,” 2018, doi: 10.1117/12.2304923.
LibreCat | DOI
 
[152]
2017 | Journal Article | LibreCat-ID: 64403
M. Lindemann, N. C. Gerhardt, M. R. (ORCiD: 0000-0003-1265-0003) Hofmann, T. Pusch, E. La Tona, and R. Michalzik, “Thermally induced birefringence tuning of 37 GHz in VCSELs,” 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC 2017), vol. 1, p. 108, 2017, doi: 10.1109/cleoe-eqec.2017.8086349.
LibreCat | DOI
 
[151]
2017 | Conference Paper | LibreCat-ID: 64402
M. Lenz et al., “Spectroscopic optical coherence tomography for ex vivo brain tumor analysis,” 2017, doi: 10.1117/12.2252141.
LibreCat | DOI
 
[150]
2017 | Conference Paper | LibreCat-ID: 64399
M. Finkeldey, L. Göring, F. Schellenberg, C. Brenner, N. C. Gerhardt, and M. R. Hofmann, “Multimodal backside imaging of a microcontroller using confocal laser scanning and optical-beam-induced current imaging,” 2017, doi: 10.1117/12.2250912.
LibreCat | DOI
 
[149]
2017 | Journal Article | LibreCat-ID: 64401
M. Finkeldey, F. Schellenberg, C. Brenner, M. R. Hofmann, N. C. Gerhardt, and L. Göring, “Optical metrology for the investigation of buried technical structures,” Technisches Messen, vol. 85, no. 2, pp. 104–110, 2017, doi: 10.1515/teme-2017-0096.
LibreCat | DOI
 
[148]
2017 | Conference Paper | LibreCat-ID: 64398
M. N. Cherkashin, C. Brenner, W. D. Putro, B. Döpke, N. C. Gerhardt, and M. R. Hofmann, “Linking transducer transfer function with multi-pulse excitation photoacoustic response,” 2017, doi: 10.1117/12.2254577.
LibreCat | DOI
 
[147]
2017 | Conference Paper | LibreCat-ID: 64400
M. Lenz et al., “Nondestructive evaluation of protective coatings for the conservation of industrial monuments,” 2017, doi: 10.1117/12.2270170.
LibreCat | DOI
 
[146]
2017 | Conference Paper | LibreCat-ID: 64397
L. Göring, M. Finkeldey, A. Ad­in­da-Oug­ba, N. C. Gerhardt, and M. Hofmann, “Lensless digital holographic microscope using in-line configuration and laser diode illumination,” 2017, doi: 10.1117/12.2250927.
LibreCat | DOI
 
[145]
2017 | Journal Article | LibreCat-ID: 64386
M. Lenz et al., “Spectral domain optical coherence tomography for non-destructive testing of protection coatings on metal substrates,” Applied Sciences, vol. 7, no. 4, 2017, doi: 10.3390/app7040364.
LibreCat | DOI
 
[144]
2017 | Journal Article | LibreCat-ID: 64385
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, T. Pusch, R. Michalzik, and E. La Tona, “Monolithic vertical-cavity surface-emitting laser with thermally tunable birefringence,” Applied physics letters, vol. 110, no. 15, 2017, doi: 10.1063/1.4980025.
LibreCat | DOI
 
[143]
2017 | Conference Paper | LibreCat-ID: 64393
M. N. Cherkashin, C. Brenner, W. D. Putro, B. Döpke, N. C. Gerhardt, and M. R. Hofmann, “Dynamics of the photoacoustic response of single-element PZT transducers to pulse burst excitation,” 2017, doi: 10.1117/12.2253051.
LibreCat | DOI
 
[142]
2017 | Journal Article | LibreCat-ID: 64384
M. Finkeldey, L. Göring, C. Brenner, M. Hofmann, and N. C. Gerhardt, “Depth-filtering in common-path digital holographic microscopy,” Optics express, vol. 25, no. 16, pp. 19398–19407, 2017, doi: 10.1364/oe.25.019398.
LibreCat | DOI
 
[141]
2017 | Conference Paper | LibreCat-ID: 64388
M. Finkeldey, F. Schellenberg, N. C. Gerhardt, M. Hofmann, and L. Göring, “Backside imaging of a microcontroller with common-path digital holography,” 2017, doi: 10.1117/12.2250903.
LibreCat | DOI
 
[140]
2017 | Conference Paper | LibreCat-ID: 64395
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, T. Pusch, and R. Michalzik, “Investigations on polarization oscillation amplitudes in spin-VCSELs,” 2017, doi: 10.1117/12.2252490.
LibreCat | DOI
 
[139]
2017 | Journal Article | LibreCat-ID: 64392
M. Finkeldey, C. (ORCiD: 0000-0002-8764-9261) Brenner, N. C. Gerhardt, M. R. Hofmann, and L. Göring, “Digital holographic microscopy of buried specimen using a common-path reflective setup,” DGaO-Proceedings, vol. 118, 2017.
LibreCat
 
[138]
2017 | Conference Paper | LibreCat-ID: 64391
V. Besaga, N. C. Gerhardt, M. R. Hofmann, and P. P. Maksimyak, “Common-path holographic objective for conventional photographic camera,” 2017, doi: 10.1117/12.2273890.
LibreCat | DOI
 
[137]
2017 | Conference Paper | LibreCat-ID: 64394
M. Lindemann, M. R. Hofmann, N. C. Gerhardt, T. Pusch, and R. Michalzik, “High-frequency polarization dynamics in spin-lasers - pushing the limits,” 2017, doi: 10.1117/12.2272972.
LibreCat | DOI
 
[136]
2016 | Journal Article | LibreCat-ID: 59690
M. Lindemann, T. Pusch, R. Michalzik, N. C. Gerhardt, and M. R. Hofmann, “Frequency tuning of polarization oscillations: Toward high-speed spin-lasers,” Applied Physics Letters, vol. 108, no. 4, 2016, doi: 10.1063/1.4940713.
LibreCat | DOI
 
[135]
2016 | Preprint | LibreCat-ID: 64425
F. Schellenberg, M. Finkeldey, N. C. Gerhardt, M. R. Hofmann, A. Moradi, and C. Paar, “Large laser spots and fault sensitivity analysis.” 2016.
LibreCat
 
[134]
2016 | Journal Article | LibreCat-ID: 64426
M. Lenz et al., “Local bi­na­ry pat­terns for dif­fe­ren­tia­ti­on of brain tis­sue types in­op­ti­cal co­he­rence to­mo­gra­phy ima­ges,” Biomedical engineering, vol. 61, no. Suppl. 1, 2016.
LibreCat
 
[133]
2016 | Conference Paper | LibreCat-ID: 64424
F. Schellenberg, M. Finkeldey, N. C. Gerhardt, M. R. Hofmann, A. Moradi, and C. Paar, “Large laser spots and fault sensitivity analysis,” in 2016 IEEE International Symposium on Hardware Oriented Security and Trust (HOST 2016), 2016, pp. 203–208, doi: 10.1109/hst.2016.7495583.
LibreCat | DOI
 
[132]
2016 | Conference Paper | LibreCat-ID: 64420
M. Finkeldey, F. Schellenberg, N. C. Gerhardt, C. Paar, and M. Hofmann, “Common-path depth-filtered digital holography for high resolution imaging of buried semiconductor structures,” 2016, doi: 10.1117/12.2212454.
LibreCat | DOI
 
[131]
2016 | Conference Paper | LibreCat-ID: 64423
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, T. Pusch, and R. Michalzik, “Influence of birefringence splitting on ultrafast polarization oscillations in VCSELs,” 2016, doi: 10.1117/12.2212413.
LibreCat | DOI
 
[130]
2016 | Conference Paper | LibreCat-ID: 64427
N. C. Gerhardt, Jr. Faria, Paulo E., G. Xu, J. Lee, G. M. Sipahi, and I. Žutić, “Microscopic description of a spin laser,” 2016.
LibreCat
 
[129]
2016 | Conference Paper | LibreCat-ID: 64422
M. Lindemann, M. R. Hofmann, N. C. Gerhardt, T. Pusch, and R. Michalzik, “Frequency tuning of polarization oscillations in spin-polarized vertical-cavity surface-emitting lasers,” 2016, doi: 10.1117/12.2229358.
LibreCat | DOI
 
[128]
2016 | Conference Paper | LibreCat-ID: 64419
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, T. Pusch, and R. Michalzik, “Birefringent vertical cavity surface-emitting lasers - toward high-speed spin-lasers,” 2016, doi: 10.1117/12.2229356.
LibreCat | DOI
 
[127]
2016 | Conference Paper | LibreCat-ID: 64415
C. Brenner, L. Göring, B. Döpke, M. N. Cherkashin, N. C. Gerhardt, and M. R. Hofmann, “Dynamics of double-pulse photoacoustic excitation,” 2016, doi: 10.1117/12.2213476.
LibreCat | DOI
 
[126]
2016 | Journal Article | LibreCat-ID: 64421
L. Göring, M. Finkeldey, N. C. Gerhardt, and M. R. Hofmann, “Common-path digital holography microscopy of buried semiconductor specimen,” Adaptive Optics: Analysis, Methods & Systems, 2016, doi: 10.1364/3d.2016.jw4a.40.
LibreCat | DOI
 
[125]
2016 | Conference Paper | LibreCat-ID: 64418
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, M. Bou Sanayeh, R. Mich­al­zik, and T. Pusch, “Birefringence tuning of VCSELs,” 2016, doi: 10.1117/12.2228091.
LibreCat | DOI
 
[124]
2016 | Conference Paper | LibreCat-ID: 64411
N. C. Gerhardt, M. R. Hofmann, M. Finkeldey, and L. Göring, “Common-path digital holography microscopy of buried semiconductor specimen,” 2016, doi: 10.1364/aoms.2016.jw4a.40.
LibreCat | DOI
 
[123]
2016 | Conference Paper | LibreCat-ID: 64413
N. C. Gerhardt, M. R. Hofmann, M. Finkeldey, and L. Goring, “Common-path digital holography microscopy of buried semiconductor specimen,” 2016, doi: 10.1364/cosi.2016.jw4a.40.
LibreCat | DOI
 
[122]
2016 | Conference Paper | LibreCat-ID: 64417
N. C. Gerhardt, M. R. Hofmann, M. Finkeldey, and L. Goring, “Common-path digital holography microscopy of buried semiconductor specimen,” 2016.
LibreCat
 
[121]
2016 | Conference Paper | LibreCat-ID: 64416
F. Schellenberg et al., “On the complexity reduction of laser fault injection campaigns using OBIC measurements,” in 2015 Workshop on Fault Diagnosis and Tolerance in Cryptography - FDTC 2015, 2016, pp. 14–27, doi: 10.1109/fdtc.2015.10.
LibreCat | DOI
 
[120]
2016 | Conference Paper | LibreCat-ID: 64407
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, T. Pusch, and R. Michalzik, “High-frequency operation of spin vertical-cavity surface-emitting lasers - towards 100 GHz,” 2016, doi: 10.1117/12.2237163.
LibreCat | DOI
 
[119]
2016 | Journal Article | LibreCat-ID: 64406
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, T. Pusch, and R. Michalzik, “Frequency tuning of polarization oscillations in spin-lasers,” Spintronics IX, 2016, doi: 10.1117/12.2237566.
LibreCat | DOI
 
[118]
2016 | Conference Paper | LibreCat-ID: 64408
N. C. Gerhardt, M. R. Hofmann, M. Finkeldey, and L. Göring, “Common-path digital holography microscopy of buried semiconductor specimen,” 2016, doi: 10.1364/aio.2016.jw4a.40.
LibreCat | DOI
 
[117]
2016 | Conference Paper | LibreCat-ID: 64409
N. C. Gerhardt, M. R. Hofmann, M. Finkeldey, and L. Göring, “Common-path digital holography microscopy of buried semiconductor specimen,” 2016, doi: 10.1364/math.2016.jw4a.40.
LibreCat | DOI
 
[116]
2016 | Conference Paper | LibreCat-ID: 64410
N. C. Gerhardt, M. R. Hofmann, M. Finkeldey, and L. Go, “Common-path digital holography microscopy of buried semiconductor specimen,” 2016, doi: 10.1364/isa.2016.jw4a.40.
LibreCat | DOI
 
[115]
2016 | Conference Paper | LibreCat-ID: 64412
N. C. Gerhardt, M. R. Hofmann, M. Finkeldey, and L. Göring, “Common-path digital holography microscopy of buried semiconductor specimen,” 2016.
LibreCat
 
[114]
2015 | Journal Article | LibreCat-ID: 59691
P. E. Faria Junior, G. Xu, J. Lee, N. C. Gerhardt, G. M. Sipahi, and I. Žutić, “Toward high-frequency operation of spin lasers,” Physical Review B, vol. 92, no. 7, Art. no. 075311, 2015, doi: 10.1103/physrevb.92.075311.
LibreCat | DOI
 
[113]
2015 | Journal Article | LibreCat-ID: 59693
P. E. Faria Junior, G. Xu, J. Lee, N. C. Gerhardt, G. M. Sipahi, and I. Žutić, “Toward high-frequency operation of spin lasers,” Physical Review B, vol. 92, no. 7, Art. no. 075311, 2015, doi: 10.1103/physrevb.92.075311.
LibreCat | DOI
 
[112]
2015 | Conference Paper | LibreCat-ID: 64444
M. Lindemann, N. C. Gerhardt, M. Hofmann, T. Pusch, and R. Michalzik, “Tu­ning the fre­quen­cy of po­la­riza­t­i­on oscil­la­ti­ons in spin VC­SELs by me­cha­ni­cal strain in­duc­tion in GHz-ran­ge,” 2015.
LibreCat
 
[111]
2015 | Conference Paper | LibreCat-ID: 64441
M. Lindemann, N. C. Gerhardt, M. Hofmann, T. Pusch, and R. Michalzik, “Increasing the birefringence of VCSELs beyond 250 GHz,” 2015.
LibreCat
 
[110]
2015 | Preprint | LibreCat-ID: 64442
F. Schellenberg et al., “On the complexity reduction of laser fault injection campaigns using OBIC measurements.” 2015.
LibreCat
 
[109]
2015 | Journal Article | LibreCat-ID: 64430
A. Ad­in­da-Oug­ba, N. Koukourakis, N. C. Gerhardt, and M. Hofmann, “Simple concept for a wide-field lensless digital holographic microscope using a laser diode,” Current directions in biomedical engineering, vol. 1, no. 1, pp. 261–264, 2015, doi: 10.1515/cdbme-2015-0065.
LibreCat | DOI
 
[108]
2015 | Conference Paper | LibreCat-ID: 64432
M. N. Cherkashin, C. Brenner, L. Schnitzler, B. Döpke, N. C. Gerhardt, and M. Hofmann, “Laser-diode-based photoacoustic setup to analyze Grüneisen relaxation-effect induced signal enhancement,” 2015, doi: 10.1117/12.2183957.
LibreCat | DOI
 
[107]
2015 | Conference Paper | LibreCat-ID: 64436
M. Lindemann, H. Höpfner, N. C. Gerhardt, M. R. Hofmann, T. Pusch, and R. Michalzik, “Ultrafast polarization dynamics with controlled polarization oscillations in vertical-cavity surface-emitting lasers,” in Vertical-cavity surface-emitting lasers XIX, 2015, pp. 1–7, doi: 10.1117/12.2076920.
LibreCat | DOI
 
[106]
2015 | Conference Paper | LibreCat-ID: 64443
M. Lindemann, H. Höpfner, N. C. Gerhardt, M. R. Hofmann, T. Pusch, and R. Michalzik, “Towards high frequency operation of polarization oscillations in spin vertical-cavity surface-emitting lasers,” 2015, doi: 10.1117/12.2197969.
LibreCat | DOI
 
[105]
2015 | Journal Article | LibreCat-ID: 64435
M. Lindemann, H. Höpfner, N. C. Gerhardt, M. Hofmann, T. Pusch, and R. Michalzik, “Controlling the frequency of ultra-fast polarization oscillations in Spin-VCSELs,” 79. Jahrestagung der DPG und DPG-Frühjahrstagung, 2015.
LibreCat
 
[104]
2015 | Conference Paper | LibreCat-ID: 64440
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, T. Pusch, and R. Michalzik, “Tuning the frequency of polarization oscillations in spin-VCSELs by mechanical strain induction,” 2015.
LibreCat
 
[103]
2015 | Conference Paper | LibreCat-ID: 64438
M. Lindemann, N. C. Gerhardt, M. R. (ORCiD: 0000-0003-1265-0003) Hofmann, T. Pusch, and R. Michalzik, “Increasing the birefringence of VCSELs beyond 250 GHz,” 2015.
LibreCat
 
[102]
2015 | Conference Paper | LibreCat-ID: 64437
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, T. Pusch, and R. Michalzik, “Increasing the birefringence of VCSELs beyond 250 GHz,” 2015.
LibreCat
 
[101]
2015 | Conference Paper | LibreCat-ID: 64429
A. Ad­in­da-Oug­ba, N. Koukourakis, F. Mitschker, N. C. Gerhardt, M. Hofmann, and B. Kabir, “Compact low-cost lensless digital holographic microscope for topographic measurements of microstructures in reflection geometry,” in Optical systems design 2015, 2015, pp. 1–8, doi: 10.1117/12.2191073.
LibreCat | DOI
 
[100]
2015 | Conference Paper | LibreCat-ID: 64433
A. Ad­in­da-Oug­ba, N. Koukourakis, A. Essaidi, N. C. Gerhardt, and M. Hofmann, “Quantitative phase imaging by wide field lensless digital holographic microscope,” in Optical methods for inspection, characterization, and imaging of biomaterials II, 2015, p. 952903, doi: 10.1117/12.2184471.
LibreCat | DOI
 
[99]
2015 | Journal Article | LibreCat-ID: 64428
M. Lindemann, N. C. Gerhardt, M. Hofmann, T. Pusch, and R. Michalzik, “Vertical-cavity surface-emitting lasers with birefringence splitting above 250 GHz,” Electronics letters, vol. 51, no. 20, pp. 1600–1601, 2015, doi: 10.1049/el.2015.2149.
LibreCat | DOI
 
[98]
2015 | Conference Paper | LibreCat-ID: 64431
M. Lindemann, H. Höpfner, N. C. Gerhardt, M. Hofmann, T. Pusch, and R. Michalzik, “Controlled switching and frequency tuning of polarization oscillations in vertical-cavity surface-emitting lasers,” in Spintronics VIII, 2015, pp. 1–5, doi: 10.1117/12.2197970.
LibreCat | DOI
 
[97]
2015 | Conference Paper | LibreCat-ID: 64439
M. Lindemann, N. C. Gerhardt, M. R. Hofmann, T. Pusch, and R. Michalzik, “Tuning the frequency of polarization oscillations in Spin-VCSELs by mechanical strain induction,” 2015.
LibreCat
 
[96]
2014 | Conference Paper | LibreCat-ID: 64453
V. Jaedicke et al., “Performance comparison of different metrics for spectroscopic optical coherence tomography,” in Biomedical applications of light scattering VIII, 2014, pp. 1–10, doi: 10.1117/12.2038891.
LibreCat | DOI
 
[95]
2014 | Conference Paper | LibreCat-ID: 64451
N. Koukourakis et al., “Effects of axial scanning in confocal microscopy employing adaptive lenses (CAL),” 2014, doi: 10.1117/12.2052152.
LibreCat | DOI
 
[94]
2014 | Journal Article | LibreCat-ID: 64448
N. Koukourakis et al., “Axial scanning in confocal microscopy employing adaptive lenses (CAL),” Optics express, vol. 22, no. 5, pp. 6025–6039, 2014, doi: 10.1364/oe.22.006025.
LibreCat | DOI
 
[93]
2014 | Journal Article | LibreCat-ID: 64450
H. Höpfner, M. Lindemann, N. C. Gerhardt, and M. Hofmann, “Controlled switching of ultrafast circular polarization oscillations in spin-polarized vertical-cavity surface-emitting lasers,” Applied physics letters, vol. 104, no. 2, pp. 1–5, 2014, doi: 10.1063/1.4862330.
LibreCat | DOI
 
[92]
2014 | Journal Article | LibreCat-ID: 64452
N. Koukourakis, N. C. Gerhardt, M. R. Hofmann, V. Jädicke, S. Göbel, and H. Welp, “Multiwavelength phase unwrapping and aberration correction using depth filtered digital holography,” Optics letters, vol. 39, no. 14, pp. 4160–4163, 2014, doi: 10.1364/ol.39.004160.
LibreCat | DOI
 
[91]
2014 | Conference Paper | LibreCat-ID: 64449
H. Höpfner, M. Lindemann, N. C. Gerhardt, and M. Hofmann, “Coherent switching of polarization oscillations in vertical-cavity surface-emitting lasers,” in Vertical-cavity surface-emitting lasers XVIII, 2014, pp. 9001–15, doi: 10.1117/12.2039196.
LibreCat | DOI
 
[90]
2014 | Conference Paper | LibreCat-ID: 64447
H. Höpfner, M. Lindemann, N. C. Gerhardt, and M. R. Hofmann, “Spin-controlled ultrafast vertical-cavity surface-emitting lasers,” in Semiconductor lasers and laser dynamics VI, 2014, pp. 1–6, doi: 10.1117/12.2049684.
LibreCat | DOI
 
[89]
2014 | Conference Paper | LibreCat-ID: 64445
N. C. Gerhardt, H. Höpfner, M. Lindemann, and M. R. Hofmann, “Polarization dynamics in spin-polarized vertical-cavity surface-emitting lasers,” in Spintronics VII, 2014, pp. 1–10, doi: 10.1117/12.2063723.
LibreCat | DOI
 
[88]
2014 | Journal Article | LibreCat-ID: 64446
N. Koukourakis et al., “Employing electrically tunable lenses in confocal microscopy for axial scanning,” International C for Optics. Congress , 2014.
LibreCat
 
[87]
2013 | Journal Article | LibreCat-ID: 64466
H. Höpfner et al., “Spin relaxation in spin light-emitting diodes - effects of magnetic field and temperature,” Ultrafast phenomena and nanophotonics XVII, pp. 86230A–1, 2013, doi: 10.1117/12.2001511.
LibreCat | DOI
 
[86]
2013 | Conference Paper | LibreCat-ID: 64460
M. Finkeldey et al., “Optical gain and lasing in GaNAsP/BGa(As)P heterostructures grown on (001) silicon substrate,” 2013.
LibreCat
 
[85]
2013 | Conference Paper | LibreCat-ID: 64464
H. Höpfner et al., “Spin injection and spin relaxation: magnetic field effects,” 2013.
LibreCat
 
[84]
2013 | Conference Paper | LibreCat-ID: 64456
N. C. Gerhardt, M. R. Hofmann, V. Jaedicke, S. Aǧcaer, S. Goebel, and H. Welp, “Spectral analysis and spectroscopic metrics in Spectroscopic Optical Coherence Tomography,” 2013, doi: 10.1364/fio.2013.fw4a.1.
LibreCat | DOI
 
[83]
2013 | Conference Paper | LibreCat-ID: 64459
N. C. Gerhardt et al., “Non-exponential photoluminescence transients in GaNAsP lattice matched to (001) silicon substrate,” 2013.
LibreCat
 
[82]
2013 | Journal Article | LibreCat-ID: 64467
H. Höpfner et al., “Spin relaxation length in quantum dot spin LEDs,” Physica status solidi, vol. 10, no. 9, pp. 1214–1217, 2013, doi: 10.1002/pssc.201200689.
LibreCat | DOI
 
[81]
2013 | Conference Paper | LibreCat-ID: 64468
N. C. Gerhardt et al., “Ultrafast spin-polarized vertical-cavity surface-emitting lasers,” in Spintronics VI, 2013, pp. 8313–80, doi: 10.1117/12.2022720.
LibreCat | DOI
 
[80]
2013 | Journal Article | LibreCat-ID: 64455
N. Koukourakis et al., “Nonexponential photoluminescence transients in a Ga(NAsP) lattice matched to a (001) silicon substrate,” Physical review, vol. 87, no. 3, 2013, doi: 10.1103/physrevb.87.035303.
LibreCat | DOI
 
[79]
2013 | Journal Article | LibreCat-ID: 64457
V. Jaedicke et al., “Comparison of different metrics for analysis and visualization in spectroscopic optical coherence tomography,” Biomedical optics express, vol. 4, no. 12, pp. 2945–2961, 2013, doi: 10.1364/boe.4.002945.
LibreCat | DOI
 
[78]
2013 | Conference Paper | LibreCat-ID: 64461
V. Jaedicke et al., “Quantitative phase analysis through scattering media by depth-filtered digital holography,” in Three-dimensional and multidimensional microscopy, 2013, pp. 85891J-85891J–8, doi: 10.1117/12.2001159.
LibreCat | DOI
 
[77]
2013 | Journal Article | LibreCat-ID: 64458
V. Jaedicke, N. C. Gerhardt, M. Hofmann, S. Agcaer, S. Goebel, and H. Welp, “Contrast enhancement methods in optical coherence tomography using spectral features,” Biomedical engineering, vol. 58, no. Suppl. 1, pp. 1–2, 2013, doi: 10.1515/bmt-2013-4269.
LibreCat | DOI
 
[76]
2013 | Book Chapter | LibreCat-ID: 64462
A. Ludwig et al., “Quantum dot spintronics - fundamentals and applications,” in Magnetic nanostructures, 2013, pp. 235–268.
LibreCat | DOI
 
[75]
2013 | Dissertation | LibreCat-ID: 64454
N. C. Gerhardt and F. für Elektrotechnik und Informationstechnik, “More than Moore” - novel photonic concepts for information technology. 2013.
LibreCat
 
[74]
2013 | Conference Paper | LibreCat-ID: 64465
H. Höpfner et al., “Spin injection, transport, and relaxation in spin light-emitting diodes - magnetic field effects,” in Spintronics VI, 2013, pp. 8813–43, doi: 10.1117/12.2023324.
LibreCat | DOI
 
[73]
2012 | Conference Paper | LibreCat-ID: 64476
N. Koukourakis et al., “Photoluminescence and optical gain of Ga(NAsP) heterostructures pseudomorphically grown on silicon (001) substrate,” in Silicon photonics VII, 2012, pp. 1–6, doi: 10.1117/12.907677.
LibreCat | DOI
 
[72]
2012 | Conference Paper | LibreCat-ID: 64477
H. Höpfner et al., “Room temperature spin relaxation in quantum dot based spin-optoelectronic devices,” in Ultrafast phenomena and nanophotonics XVI, 2012, pp. 1–7, doi: 10.1117/12.907821.
LibreCat | DOI
 
[71]
2012 | Journal Article | LibreCat-ID: 64485
N. Koukourakis et al., “Time-resolved photoluminescence and optical gain in Ga(NAsP) pseudomorphically grown on silicon,” 76th Jahrestagung der DPG (76th annual conference of the DPG) and DPG-Frühjahrstagung (spring meeting) of the Condensed Matter Section (SKM) with further DPG Divisions: Environmental Physics, Microprobes, Radiation and Medical Physics, as well as the DPG working groups: Energy, Equal Opportunities, Industry and Business, Information, Philosophy of Physics, Physics and Disarmament, young DPG, 2012.
LibreCat
 
[70]
2012 | Journal Article | LibreCat-ID: 64483
H. Höpfner et al., “Temperature dependence of the spin relaxation length in spin quantum dot LEDs,” 76th Jahrestagung der DPG (76th annual conference of the DPG) and DPG-Frühjahrstagung (spring meeting) of the Condensed Matter Section (SKM) with further DPG Divisions: Environmental Physics, Microprobes, Radiation and Medical Physics, as well as the DPG working groups: Energy, Equal Opportunities, Industry and Business, Information, Philosophy of Physics, Physics and Disarmament, young DPG, 2012.
LibreCat
 
[69]
2012 | Journal Article | LibreCat-ID: 64482
V. Jaedicke et al., “System development for spectroscopic optical coherence tomography,” Biomedical engineering, vol. 57, no. Heft SI-1 Track-B, p. 327, 2012, doi: 10.1515/bmt-2012-4245.
LibreCat | DOI
 
[68]
2012 | Journal Article | LibreCat-ID: 64481
N. C. Gerhardt and M. Hofmann, “Spin-controlled vertical-cavity surface-emitting lasers,” Advances in optical technologies, pp. 268949-1-268949–15, 2012, doi: 10.1155/2012/268949.
LibreCat | DOI
 
[67]
2012 | Conference Paper | LibreCat-ID: 64470
M. Li, N. C. Gerhardt, M. Hofmann, and T. Ackemann, “Analysis of birefringence controlled ultrafast polarization oscillations in spin vertical-cavity surface-emitting lasers,” in EOS annual meeting 2012 (EOSAM 2012), 2012, pp. 104–107.
LibreCat
 
[66]
2012 | Journal Article | LibreCat-ID: 64480
H. Höpfner et al., “Spin relaxation dynamics in spin-LEDs,” 76th Jahrestagung der DPG (76th annual conference of the DPG) and DPG-Frühjahrstagung (spring meeting) of the Condensed Matter Section (SKM) with further DPG Divisions: Environmental Physics, Microprobes, Radiation and Medical Physics, as well as the DPG working groups: Energy, Equal Opportunities, Industry and Business, Information, Philosophy of Physics, Physics and Disarmament, young DPG, 2012.
LibreCat
 
[65]
2012 | Journal Article | LibreCat-ID: 64472
H. Soldat et al., “Erratum: ‘Room temperature spin relaxation length in spin light-emitting diodes’ - [Appl. Phys. Lett. 99, 051102 (2011)],” Applied physics letters, vol. 100, no. 26, pp. 269902–1, 2012, doi: 10.1063/1.4728990.
LibreCat | DOI
 
[64]
2012 | Journal Article | LibreCat-ID: 64473
N. Koukourakis et al., “High room-temperature optical gain in Ga(NAsP)/Si heterostructures,” Applied physics letters, vol. 100, no. 9, pp. 092107-1-092107–3, 2012, doi: 10.1063/1.3690886.
LibreCat | DOI
 
[63]
2012 | Journal Article | LibreCat-ID: 64474
H. Höpfner et al., “Magnetic field dependence of the spin relaxation length in spin light-emitting diodes,” Applied physics letters, vol. 101, no. 11, pp. 112402-1-112402–4, 2012, doi: 10.1063/1.4752162.
LibreCat | DOI
 
[62]
2012 | Journal Article | LibreCat-ID: 64471
N. Koukourakis et al., “Depth-filtered digital holography,” Optics express, vol. 20, no. 20, pp. 22636–22648, 2012, doi: 10.1364/oe.20.022636.
LibreCat | DOI
 
[61]
2012 | Conference Paper | LibreCat-ID: 64478
V. Jaedicke et al., “Signal processing for spectroscopic optical coherence tomography,” in Proceedings of the 7th International Workshop on Biosignal Interpretation (BSI2012), 2012, pp. 224–227.
LibreCat
 
[60]
2012 | Journal Article | LibreCat-ID: 64475
M. Beckmann, C.-S. Friedrich, M. Mienkina, N. C. Gerhardt, M. Hofmann, and G. Schmitz, “Multispectral photoacoustic coded excitation using pseudorandom codes - 82231E,” Photons plus ultrasound, pp. 82231E-1-82231E–8, 2012, doi: 10.1117/12.907427.
LibreCat | DOI
 
[59]
2011 | Conference Paper | LibreCat-ID: 64497
N. C. Gerhardt et al., “Time-resolved photoluminescence and optical gain of Ga(NAsP) heterostructures pseudomorphically grown on silicon (001) substrate,” in 2011 13th International Conference on Transparent Optical Networks (ICTON 2011), 2011, vol. 1, pp. 111–114, doi: 10.1109/icton.2011.5970794.
LibreCat | DOI
 
[58]
2011 | Journal Article | LibreCat-ID: 64492
M. Li, H. Jähme, H. Soldat, N. C. Gerhardt, M. Hofmann, and T. Ackemann, “Birefringence and spin controlled ultrafast polarization oscillations in vertical-cavity surface-emitting lasers,” 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO Europe/EQEC 2011), p. 109, 2011, doi: 10.1109/cleoe.2011.5942549.
LibreCat | DOI
 
[57]
2011 | Conference Paper | LibreCat-ID: 64494
M. Beckmann, M. Mienkina, C.-S. Friedrich, N. C. Gerhardt, M. Hofmann, and G. Schmitz, “Photoacoustic coded excitation using periodically perfect sequences,” in 2011 IEEE International Ultrasonics Symposium (IUS 2011), 2011, vol. 2, pp. 1179–1182, doi: 10.1109/ultsym.2011.0290.
LibreCat | DOI
 
[56]
2011 | Conference Paper | LibreCat-ID: 64486
N. C. Gerhardt et al., “Modal gain and time-resolved photoluminescence of Ga(NAsP) heterostructures pseudomorphically grown on Silicon (001) substrate,” 2011.
LibreCat
 
[55]
2011 | Conference Paper | LibreCat-ID: 64487
N. C. Gerhardt et al., “Modal gain and time-resolved photoluminescence of Ga(NAsP) heterostructures pseudomorphically grown on silicon (001) substrate,” 2011.
LibreCat
 
[54]
2011 | Conference Paper | LibreCat-ID: 64496
C.-S. Friedrich et al., “Quantitative photoacoustic blood oxygenation measurement of whole porcine blood samples using a multi-wavelength semiconductor laser system,” in Diffuse optical imaging III, 2011, pp. 1–9, doi: 10.1117/12.889682.
LibreCat | DOI
 
[53]
2011 | Journal Article | LibreCat-ID: 64495
N. Koukourakis et al., “Photorefractive two-wave mixing for image amplification in digital holography,” Optics express, vol. 19, no. 22, pp. 22004–22023, 2011, doi: 10.1364/oe.19.022004.
LibreCat | DOI
 
[52]
2011 | Conference Paper | LibreCat-ID: 64493
M. Mienkina, C.-S. Friedrich, N. C. Gerhardt, M. Hofmann, G. Schmitz, and A. Eder, “Ex­pe­ri­men­tal eva­lua­ti­on of mul­tis­pec­tral pho­toa­coustic coded ex­ci­ta­ti­on using or­tho­go­nal uni­po­lar golay codes,” 2011.
LibreCat
 
[51]
2011 | Conference Paper | LibreCat-ID: 64488
N. C. Gerhardt et al., “Modal gain and time-resolved photoluminescence of Ga(NAsP) heterostructures pseudomorphically grown on silicon (001) substrate,” 2011.
LibreCat
 
[50]
2011 | Conference Paper | LibreCat-ID: 64489
C. Brenner et al., “Quantitative photoacoustic blood oxygenation measurement of whole porcine blood samples using a multi-wavelength semiconductor laser system,” 2011.
LibreCat
 
[49]
2011 | Conference Paper | LibreCat-ID: 64491
N. C. Gerhardt et al., “Modal gain and time-resolved photoluminescence of Ga(NAsP) heterostructures pseudomorphically grown on silicon (001) substrate,” 2011.
LibreCat
 
[48]
2011 | Conference Paper | LibreCat-ID: 64490
N. C. Gerhardt et al., “Spectroscopic optical coherence tomography for substance identification,” 2011.
LibreCat
 
[47]
2010 | Journal Article | LibreCat-ID: 64505
M. Mienkina et al., “Multispectral photoacoustic coded excitation imaging using unipolar orthogonal Golay codes,” Optics express, vol. 18, no. 9, pp. 9076–9087, 2010, doi: 10.1364/oe.18.009076.
LibreCat | DOI
 
[46]
2010 | Journal Article | LibreCat-ID: 64502
R. Y. W. Lai et al., “Integrity of micro-hotplates during high-temperature operation monitored by digital holographic microscopy,” Journal of microelectromechanical systems, vol. 19, no. 5, pp. 1175–1179, 2010, doi: 10.1109/jmems.2010.2067442.
LibreCat | DOI
 
[45]
2010 | Journal Article | LibreCat-ID: 64500
M. Mienkina, C.-S. Friedrich, N. C. Gerhardt, W. G. Wilkening, M. Hofmann, and G. Schmitz, “Experimental evaluation of photoacoustic coded excitation using unipolar golay codes,” IEEE transactions on ultrasonics, ferroelectrics, and frequency control, vol. 57, no. 7, pp. 1583–1593, 2010, doi: 10.1109/tuffc.2010.1588.
LibreCat | DOI
 
[44]
2010 | Conference Paper | LibreCat-ID: 64501
N. C. Gerhardt, M. Li, H. Jähme, H. Soldat, M. R. Hofmann, and T. Ackemann, “Gigahertz circular polarization oscillations in spin-polarized vertical-cavity surface-emitting lasers,” in Conference on Lasers and Electro-Optics (CLEO) and Quantum Electronics and Laser Science Conference (QELS), 2010, 2010, pp. 1–2, doi: 10.1364/cleo.2010.cme6.
LibreCat | DOI
 
[43]
2010 | Conference Paper | LibreCat-ID: 64503
N. Koukourakis et al., “Modal gain analysis of GaNAsP heterostructures on silicon,” 2010, doi: 10.1364/fio.2010.jwa56.
LibreCat | DOI
 
[42]
2010 | Conference Paper | LibreCat-ID: 64506
V. Jaedicke, C. T. Kasseck, N. C. Gerhardt, M. Hofmann, and H. Welp, “Substance identification in spectroscopic optical coherence tomograhpy using pattern recognition,” 2010, doi: 10.1364/fio.2010.ftuy2.
LibreCat | DOI
 
[41]
2010 | Conference Paper | LibreCat-ID: 64499
N. C. Gerhardt, M. R. Hofmann, N. Koukourakis, and Y. W. Lai, “Photorefractive two-wave mixing for image amplification in digital holography,” 2010, doi: 10.1364/fio.2010.fthbb5.
LibreCat | DOI
 
[40]
2010 | Conference Paper | LibreCat-ID: 64504
M. Beckmann, M. Mienkina, G. Schmitz, C.-S. Friedrich, N. C. Gerhardt, and M. R. Hofmann, “Monospectral photoacoustic imaging using Legendre sequences,” in 2010 IEEE International Ultrasonics Symposium (IUS), 2010, vol. 1, pp. 386–389, doi: 10.1109/ultsym.2010.5935648.
LibreCat | DOI
 
[39]
2010 | Conference Paper | LibreCat-ID: 64498
N. C. Gerhardt et al., “Modal gain analysis of GaNAsP heterostructures on silicon,” 2010.
LibreCat
 
[38]
2009 | Journal Article | LibreCat-ID: 64520
N. C. Gerhardt et al., “Op­ti­cal ve­ri­fi­ca­ti­on of gain in Ga(NAsP)/(BGa)(AsP) mul­ti-quan­tum-well he­te­rost­ruc­tu­res mo­no­li­thi­cal­ly grown lat­ti­ce-mat­ched on (001) si­li­con sub­stra­te,” Papers presented at the 35th International Symposium on Compound Semiconductors (ISCS 2008), Rust, Germany, 21 - 24 September 2008, pp. 1349–1523, 2009.
LibreCat
 
[37]
2009 | Conference Paper | LibreCat-ID: 64514
N. C. Gerhardt et al., “Gain characteristics and lasing of Ga(NAsP) multi-quantum well structures,” in Papers presented at the 9th International Workshop on Nonlinear Optics and Excitation Kinetics in Semiconductors (NOEKS 9), 2009, pp. 576–578, doi: 10.1002/pssc.200880360.
LibreCat | DOI
 
[36]
2009 | Conference Paper | LibreCat-ID: 64519
N. Koukourakis et al., “New concepts for depth resolved holographic imaging based on spectrally tunable diode lasers,” in Conference on Lasers and Electro-Optics, 2009 and 2009 Quantum Electronics and Laser Science Conference, 2009, pp. 1253–1254, doi: 10.1364/cleo.2009.ctuaa2.
LibreCat | DOI
 
[35]
2009 | Conference Paper | LibreCat-ID: 64517
N. C. Gerhardt et al., “Lasing of the III/V compound semiconductor Ga(NAsP) integrated lattice-matched to Si substrate,” in Group IV Photonics, 2009, pp. 199–201, doi: 10.1109/group4.2009.5338394.
LibreCat | DOI
 
[34]
2009 | Journal Article | LibreCat-ID: 64511
N. Koukourakis et al., “Depth resolved holographic imaging with variable depth resolution using spectrally tunable diode laser,” Electronics letters, vol. 45, no. 1, pp. 46–48, 2009, doi: 10.1049/el:20092390.
LibreCat | DOI
 
[33]
2009 | Conference Paper | LibreCat-ID: 64523
C. Kasseck et al., “Three-dimensional bone imaging: optical coherence tomography versus micro computer tomography,” in Optical coherence tomography and coherence techniques IV, 2009, p. 73721B, doi: 10.1117/12.831814.
LibreCat | DOI
 
[32]
2009 | Journal Article | LibreCat-ID: 64521
N. Koukourakis, C. Kasseck, N. C. Gerhardt, M. Hofmann, and D. Rytz, “Single-shot holography for depth resolved three dimensional imaging,” Optics express, vol. 17, no. 23, pp. 21015–21029, 2009, doi: 10.1364/oe.17.021015.
LibreCat | DOI
 
[31]
2009 | Conference Paper | LibreCat-ID: 64518
M. Mienkina, C.-S. Friedrich, N. C. Gerhardt, M. Hofmann, and G. Schmitz, “Multispectral photoacoustic coded excitation using orthogonal unipolar golay codes,” in Diagnostic imaging, 2009, pp. 217–220, doi: 10.1007/978-3-642-03879-2_61.
LibreCat | DOI
 
[30]
2009 | Conference Paper | LibreCat-ID: 64516
N. C. Gerhardt et al., “Lasing in optically pumped Ga(NAsP)/(BGa)(AsP) heterstructures on Silicon,” in Conference on Lasers and Electro-Optics, 2009 and 2009 Quantum Electronics and Laser Science Conference, 2009, pp. 1–2, doi: 10.1364/cleo.2009.ctuy2.
LibreCat | DOI
 
[29]
2009 | Conference Paper | LibreCat-ID: 64515
N. C. Gerhardt et al., “Laser operation of III/V compound material Ga(NAsP) grown lattice-matched on (001) Si substrate,” in Device Research Conference, 2009, pp. 193–194, doi: 10.1109/drc.2009.5354936.
LibreCat | DOI
 
[28]
2009 | Conference Paper | LibreCat-ID: 64513
M. Mienkina, G. Schmitz, C.-S. Friedrich, N. C. Gerhardt, M. Hofmann, and A. Eder, “Feasibility study of multispectral photoacoustic coded excitation using orthogonal unipolar Golay codes,” in 2009 IEEE Ultrasonics Symposium, 2009, vol. 1, pp. 108–111, doi: 10.1109/ultsym.2009.5441941.
LibreCat | DOI
 
[27]
2009 | Journal Article | LibreCat-ID: 64512
M. Mienkina, C.-S. Friedrich, K. Hensel, N. C. Gerhardt, M. Hofmann, and G. Schmitz, “Evaluation of Ferucarbotran (Resovist®) as a photoacoustic contrast agent,” Biomedical engineering, vol. 54, no. 2, pp. 83–88, 2009, doi: 10.1515/bmt.2009.012.
LibreCat | DOI
 
[26]
2009 | Conference Paper | LibreCat-ID: 64522
S. Hövel et al., “Spin-con­trol­led op­to­elec­tro­nic de­vices,” in Papers presented at the 9th International Workshop on Nonlinear Optics and Excitation Kinetics in Semiconductors (NOEKS 9), 2009, pp. 436–439, doi: 10.1002/pssc.200880357.
LibreCat | DOI
 
[25]
2009 | Conference Paper | LibreCat-ID: 64509
C.-S. Friedrich, M. Mienkina, N. C. Gerhardt, G. Schmitz, M. Hofmann, and M.-C. Wawreczko, “Compact semiconductor laser sources for photoacoustic imaging,” in Photons plus ultrasound, 2009, pp. 1–7, doi: 10.1117/12.809261.
LibreCat | DOI
 
[24]
2009 | Conference Paper | LibreCat-ID: 64510
M. Mienkina, C.-S. Friedrich, N. C. Gerhardt, M. R. Hofmann, G. Schmitz, and A. Eder, “Comparison of coding techniques for photoacoustic coded excitation,” in Proceedings, 2009, vol. 1, pp. 313–316.
LibreCat
 
[23]
2008 | Conference Paper | LibreCat-ID: 64524
C.-S. Friedrich, N. C. Gerhardt, M. Hofmann, G. Schmitz, M. P. Mienkina, and A. Eder, “Evaluation of simplex codes for photoacoustic coded excitation,” in 4th European Conference of the International Federation for Medical and Biological Engineering, 2008, vol. 1, pp. 444–447, doi: 10.1007/978-3-540-89208-3_105.
LibreCat | DOI
 
[22]
2008 | Conference Paper | LibreCat-ID: 64525
M. Mienkina, C.-S. Friedrich, N. C. Gerhardt, M. Hofmann, G. Schmitz, and A. Eder, “Simulation study of photoacoustic coded excitation using Golay codes,” in IEEE Ultrasonics Symposium, 2008, 2008, pp. 1242–1245, doi: 10.1109/ultsym.2008.0300.
LibreCat | DOI
 
[21]
2007 | Conference Paper | LibreCat-ID: 64527
M. Breede, C. Kasseck, C. Brenner, N. C. Gerhardt, M. Hofmann, and R. Höfling, “External-cavity diode laser utilizing a micromirror device for spectral tuning,” in Optical measurement systems for industrial inspection V, 2007, pp. 1–11, doi: 10.1117/12.726825.
LibreCat | DOI
 
[20]
2007 | Journal Article | LibreCat-ID: 64528
M. Breede, C. Kasseck, C. Brenner, N. C. Gerhardt, M. Hofmann, and R. Höfling, “Micromirror device controlled tunable diode laser,” Electronics letters, vol. 43, no. 8, pp. 456–457, 2007, doi: 10.1049/el:20073651.
LibreCat | DOI
 
[19]
2007 | Conference Paper | LibreCat-ID: 64529
M. Mienkina et al., “Photoacoustic imaging of Fibrosarcoma using RGD-Cy 3 as a targeted contrast agent,” in IEEE Ultrasonics Symposium, 2007, 2007, vol. 5, pp. 2409–2412, doi: 10.1109/ultsym.2007.606.
LibreCat | DOI
 
[18]
2007 | Journal Article | LibreCat-ID: 64526
M. Mienkina et al., “Evaluation eines kommerziellen Ultraschallgeräts für den Einsatz im photoakustischen Reflexionsmodus,” Biomedical engineering, vol. 52, no. S1, pp. G2-1, 2007.
LibreCat
 
[17]
2007 | Journal Article | LibreCat-ID: 64531
S. Hövel et al., “Spin-controlled LEDs and VCSELs,” Physica status solidi, vol. 204, no. 2, pp. 500–507, 2007, doi: 10.1002/pssa.200673219.
LibreCat | DOI
 
[16]
2007 | Conference Paper | LibreCat-ID: 64530
C. Kasseck, N. C. Gerhardt, M. Hofmann, and K. Lehmann, “Spectroscopic fourier domain optical coherence tomography,” in Optical coherence tomography and coherence techniques III, 2007, pp. 1–9, doi: 10.1117/12.728416.
LibreCat | DOI
 
[15]
2006 | Dissertation | LibreCat-ID: 64534
N. C. Gerhardt and F. für Elektrotechnik und Informationstechnik, Optische Verstärkung und Spin-kontrollierte Emission von Halbleiterlasern. 2006.
LibreCat
 
[14]
2006 | Journal Article | LibreCat-ID: 64533
M. Mienkina et al., “Experimentelle Charakterisierung von Ferucarbotran als photoakustisches Kontrastmittel,” Biomedical engineering, vol. 51, no. Suppl., pp. 1–2, 2006.
LibreCat
 
[13]
2006 | Conference Paper | LibreCat-ID: 64532
M. Mienkina et al., “Experimental characterization of ferucarbotran (Resovist ®) as a photoacoustic nanoparticle contrast agent,” in Proceedings, 2006, vol. 1, pp. 393–396, doi: 10.1109/ultsym.2006.111.
LibreCat | DOI
 
[12]
2005 | Conference Paper | LibreCat-ID: 64536
N. C. Gerhardt et al., “Spin-controlled LEDs and VCSELs,” in Physics and simulation of optoelectronic devices XIII, 2005, pp. 221–229, doi: 10.1117/12.590346.
LibreCat | DOI
 
[11]
2005 | Journal Article | LibreCat-ID: 64535
N. C. Gerhardt et al., “Electron spin injection into GaAs from ferromagnetic contacts in remanence,” Applied physics letters, vol. 87, no. 3, pp. 1–3, 2005, doi: 10.1063/1.1996843.
LibreCat | DOI
 
[10]
2003 | Conference Paper | LibreCat-ID: 64538
M. Hofmann and N. C. Gerhardt, “Gain and emission dynamics of dilute nitride quantum well lasers,” 2003, doi: 10.1364/fio.2003.thn1.
LibreCat | DOI
 
[9]
2003 | Conference Paper | LibreCat-ID: 64539
N. C. Gerhardt et al., “Optical gain of 1.3 μm (GaIn)(NAs)/GaAs lasers - a comparison between theory and experiment,” 2003.
LibreCat
 
[8]
2003 | Journal Article | LibreCat-ID: 64540
N. C. Gerhardt, M. Hofmann, and W. W. Rühle, “Optical spectroscopy of 1.3 μm (GaIn)(NAs)/GaAs lasers,” IEE proceedings, vol. 150, no. 1, pp. 45–48, 2003, doi: 10.1049/ip-opt:20030035.
LibreCat | DOI
 
[7]
2003 | Conference Paper | LibreCat-ID: 64537
N. C. Gerhardt and M. R. Hofmann, “Experimentelle Methoden zur Bestimmung der optischen Verstärkung von 1.3µm (GaIn)(NAs)/GaAs Halbleiterlasern,” 2003.
LibreCat
 
[6]
2002 | Journal Article | LibreCat-ID: 64541
M. Hofmann et al., “Emission dynamics and optical gain of 1.3 \mum (GaIn)(NAs)/GaAs Lasers,” IEEE journal of quantum electronics / Institute of Electrical and Electronics Engineers, vol. 38, no. 2, pp. 213–221, 2002, doi: 10.1109/3.980275.
LibreCat | DOI
 
[5]
2002 | Conference Paper | LibreCat-ID: 64542
N. C. Gerhardt et al., “Influence of growth conditions on the optical gain of 1.3 /spl mu/m (GaIn)(NAs)/GaAs lasers,” in Conference digest, 2002, pp. 85–86, doi: 10.1109/islc.2002.1041130.
LibreCat | DOI
 
[4]
2001 | Conference Paper | LibreCat-ID: 64543
M. Hofmann et al., “Emission dynamics of (GaIn)(NAs)/GaAs lasers emitting at 1.3 μm,” in Physics and simulation of optoelectronic devices IX, 2001, pp. 256–266, doi: 10.1117/12.432573.
LibreCat | DOI
 
[3]
2001 | Conference Paper | LibreCat-ID: 64545
M. R. Hofmann et al., “Optische Verstärkung von (GaIn)(NAs)/GaAs Halbleiterlasern,” 2001.
LibreCat
 
[2]
2001 | Conference Paper | LibreCat-ID: 64546
M. Hofmann et al., “Physics of 1.3µm (GaIn)(NAs)/GaAs semiconductor lasers,” in LEOS 2001, 2001, vol. 1, pp. 326–327, doi: 10.1109/leos.2001.969307.
LibreCat | DOI
 
[1]
2001 | Book Chapter | LibreCat-ID: 64547
D. Hägele et al., “Spintronics - Spin electronics and optoelectronics in semiconductors,” in Advances in Solid State Physics 41, 2001, pp. 173–186.
LibreCat | DOI
 
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