[{"title":"DNP enhanced solid-state NMR – A powerful tool to address the surface functionalization of cellulose/paper derived materials","doi":"10.1016/j.jmro.2024.100163","date_updated":"2026-02-17T16:16:40Z","volume":21,"date_created":"2026-02-07T15:46:32Z","author":[{"first_name":"Mark V.","full_name":"Höfler, Mark V.","last_name":"Höfler"},{"first_name":"Jonas","full_name":"Lins, Jonas","last_name":"Lins"},{"full_name":"Seelinger, David","last_name":"Seelinger","first_name":"David"},{"last_name":"Pachernegg","full_name":"Pachernegg, Lukas","first_name":"Lukas"},{"full_name":"Schäfer, Timmy","last_name":"Schäfer","first_name":"Timmy"},{"full_name":"Spirk, Stefan","last_name":"Spirk","first_name":"Stefan"},{"first_name":"Markus","full_name":"Biesalski, Markus","last_name":"Biesalski"},{"full_name":"Gutmann, Torsten","id":"118165","last_name":"Gutmann","first_name":"Torsten"}],"year":"2024","page":"100163","intvolume":"        21","citation":{"bibtex":"@article{Höfler_Lins_Seelinger_Pachernegg_Schäfer_Spirk_Biesalski_Gutmann_2024, title={DNP enhanced solid-state NMR – A powerful tool to address the surface functionalization of cellulose/paper derived materials}, volume={21}, DOI={<a href=\"https://doi.org/10.1016/j.jmro.2024.100163\">10.1016/j.jmro.2024.100163</a>}, journal={Journal of Magnetic Resonance Open}, author={Höfler, Mark V. and Lins, Jonas and Seelinger, David and Pachernegg, Lukas and Schäfer, Timmy and Spirk, Stefan and Biesalski, Markus and Gutmann, Torsten}, year={2024}, pages={100163} }","mla":"Höfler, Mark V., et al. “DNP Enhanced Solid-State NMR – A Powerful Tool to Address the Surface Functionalization of Cellulose/Paper Derived Materials.” <i>Journal of Magnetic Resonance Open</i>, vol. 21, 2024, p. 100163, doi:<a href=\"https://doi.org/10.1016/j.jmro.2024.100163\">10.1016/j.jmro.2024.100163</a>.","short":"M.V. Höfler, J. Lins, D. Seelinger, L. Pachernegg, T. Schäfer, S. Spirk, M. Biesalski, T. Gutmann, Journal of Magnetic Resonance Open 21 (2024) 100163.","apa":"Höfler, M. V., Lins, J., Seelinger, D., Pachernegg, L., Schäfer, T., Spirk, S., Biesalski, M., &#38; Gutmann, T. (2024). DNP enhanced solid-state NMR – A powerful tool to address the surface functionalization of cellulose/paper derived materials. <i>Journal of Magnetic Resonance Open</i>, <i>21</i>, 100163. <a href=\"https://doi.org/10.1016/j.jmro.2024.100163\">https://doi.org/10.1016/j.jmro.2024.100163</a>","ama":"Höfler MV, Lins J, Seelinger D, et al. DNP enhanced solid-state NMR – A powerful tool to address the surface functionalization of cellulose/paper derived materials. <i>Journal of Magnetic Resonance Open</i>. 2024;21:100163. doi:<a href=\"https://doi.org/10.1016/j.jmro.2024.100163\">10.1016/j.jmro.2024.100163</a>","chicago":"Höfler, Mark V., Jonas Lins, David Seelinger, Lukas Pachernegg, Timmy Schäfer, Stefan Spirk, Markus Biesalski, and Torsten Gutmann. “DNP Enhanced Solid-State NMR – A Powerful Tool to Address the Surface Functionalization of Cellulose/Paper Derived Materials.” <i>Journal of Magnetic Resonance Open</i> 21 (2024): 100163. <a href=\"https://doi.org/10.1016/j.jmro.2024.100163\">https://doi.org/10.1016/j.jmro.2024.100163</a>.","ieee":"M. V. Höfler <i>et al.</i>, “DNP enhanced solid-state NMR – A powerful tool to address the surface functionalization of cellulose/paper derived materials,” <i>Journal of Magnetic Resonance Open</i>, vol. 21, p. 100163, 2024, doi: <a href=\"https://doi.org/10.1016/j.jmro.2024.100163\">10.1016/j.jmro.2024.100163</a>."},"keyword":["solid-state nmr","dynamic nuclear polarization","Hydroxypropyl cellulose","Selective enhancement","Spin labelling"],"extern":"1","language":[{"iso":"eng"}],"_id":"63988","user_id":"100715","abstract":[{"text":"This concept summarizes recent advances in development and application of DNP enhanced multinuclear solid-state NMR to study the molecular structure and surface functionalization of cellulose and paper-based materials. Moreover, a novel application is presented where DNP enhanced 13C and 15N solid-state NMR is used to identify structure moieties formed by cross-linking of hydroxypropyl cellulose. Given these two aspects of this concept-type of article, we thus combine both, a review on recent findings already published and unpublished recent data that complement the existing knowledge in the field of characterization of functional lignocellulosic materials by DNP enhanced solid-state NMR.","lang":"eng"}],"status":"public","publication":"Journal of Magnetic Resonance Open","type":"journal_article"},{"language":[{"iso":"eng"}],"extern":"1","keyword":["solid-state nmr","dynamic nuclear polarization","peptides","Biradicals","Spin labeling"],"user_id":"100715","_id":"63974","status":"public","abstract":[{"text":"A versatile strategy for synthesizing tailored peptide based biradicals is presented. By labeling the protected amino acid hydroxyproline with PROXYL via the OH functionality and using this building block in solid phase peptide synthesis (SPPS), the obtained peptides become polarization agents for DNP enhanced solid-state NMR in biotolerant media. To analyze the effect of the radical position on the enhancement factor, three different biradicals are synthesized. The PROXYL spin-label is inserted in a collagen inspired artificial peptide sequence by binding through the OH group of the hydroxyproline moieties at specific position in the chain. This labeling strategy is universally applicable for any hydroxyproline position in a peptide sequence since solid-phase peptide synthesis is used to insert the building block. High performance liquid chromatography (HPLC) and mass spectrometry (MS) analyses show the successful introduction of the spin label in the peptide chain and electron paramagnetic resonance (EPR) spectroscopy confirms its activity. Dynamic nuclear polarization (DNP) enhanced solid-state nuclear magnetic resonance (NMR) experiments performed on frozen aqueous glycerol-d8 solutions containing these peptide radicals show significantly higher enhancement factors of up to 45 in 1H→13C cross polarization magic angle spinning (CP MAS) experiments compared to an analogous mono-radical peptide including this building block (ε ≈ 14). Compared to commercial biradicals such as AMUPol for which enhancement factors {\\textgreater} 100 have been obtained in the past and which have been optimized in their structure, the obtained enhancement up to 45 for our biradicals presents a significant progress in radical design.","lang":"eng"}],"type":"journal_article","publication":"Journal of Magnetic Resonance Open","doi":"10.1016/j.jmro.2024.100152","title":"Biradicals based on PROXYL containing building blocks for efficient dynamic nuclear polarization in biotolerant media","date_created":"2026-02-07T15:42:00Z","author":[{"full_name":"Herr, Kevin","last_name":"Herr","first_name":"Kevin"},{"last_name":"Höfler","full_name":"Höfler, Mark V.","first_name":"Mark V."},{"last_name":"Heise","full_name":"Heise, Henrike","first_name":"Henrike"},{"first_name":"Fabien","full_name":"Aussenac, Fabien","last_name":"Aussenac"},{"full_name":"Kornemann, Felix","last_name":"Kornemann","first_name":"Felix"},{"first_name":"David","last_name":"Rosenberger","full_name":"Rosenberger, David"},{"last_name":"Brodrecht","full_name":"Brodrecht, Martin","first_name":"Martin"},{"first_name":"Marcos","full_name":"Oliveira, Marcos","last_name":"Oliveira"},{"full_name":"Buntkowsky, Gerd","last_name":"Buntkowsky","first_name":"Gerd"},{"id":"118165","full_name":"Gutmann, Torsten","last_name":"Gutmann","first_name":"Torsten"}],"volume":20,"date_updated":"2026-02-17T16:17:22Z","citation":{"ama":"Herr K, Höfler MV, Heise H, et al. Biradicals based on PROXYL containing building blocks for efficient dynamic nuclear polarization in biotolerant media. <i>Journal of Magnetic Resonance Open</i>. 2024;20:100152. doi:<a href=\"https://doi.org/10.1016/j.jmro.2024.100152\">10.1016/j.jmro.2024.100152</a>","ieee":"K. Herr <i>et al.</i>, “Biradicals based on PROXYL containing building blocks for efficient dynamic nuclear polarization in biotolerant media,” <i>Journal of Magnetic Resonance Open</i>, vol. 20, p. 100152, 2024, doi: <a href=\"https://doi.org/10.1016/j.jmro.2024.100152\">10.1016/j.jmro.2024.100152</a>.","chicago":"Herr, Kevin, Mark V. Höfler, Henrike Heise, Fabien Aussenac, Felix Kornemann, David Rosenberger, Martin Brodrecht, Marcos Oliveira, Gerd Buntkowsky, and Torsten Gutmann. “Biradicals Based on PROXYL Containing Building Blocks for Efficient Dynamic Nuclear Polarization in Biotolerant Media.” <i>Journal of Magnetic Resonance Open</i> 20 (2024): 100152. <a href=\"https://doi.org/10.1016/j.jmro.2024.100152\">https://doi.org/10.1016/j.jmro.2024.100152</a>.","short":"K. Herr, M.V. Höfler, H. Heise, F. Aussenac, F. Kornemann, D. Rosenberger, M. Brodrecht, M. Oliveira, G. Buntkowsky, T. Gutmann, Journal of Magnetic Resonance Open 20 (2024) 100152.","bibtex":"@article{Herr_Höfler_Heise_Aussenac_Kornemann_Rosenberger_Brodrecht_Oliveira_Buntkowsky_Gutmann_2024, title={Biradicals based on PROXYL containing building blocks for efficient dynamic nuclear polarization in biotolerant media}, volume={20}, DOI={<a href=\"https://doi.org/10.1016/j.jmro.2024.100152\">10.1016/j.jmro.2024.100152</a>}, journal={Journal of Magnetic Resonance Open}, author={Herr, Kevin and Höfler, Mark V. and Heise, Henrike and Aussenac, Fabien and Kornemann, Felix and Rosenberger, David and Brodrecht, Martin and Oliveira, Marcos and Buntkowsky, Gerd and Gutmann, Torsten}, year={2024}, pages={100152} }","mla":"Herr, Kevin, et al. “Biradicals Based on PROXYL Containing Building Blocks for Efficient Dynamic Nuclear Polarization in Biotolerant Media.” <i>Journal of Magnetic Resonance Open</i>, vol. 20, 2024, p. 100152, doi:<a href=\"https://doi.org/10.1016/j.jmro.2024.100152\">10.1016/j.jmro.2024.100152</a>.","apa":"Herr, K., Höfler, M. V., Heise, H., Aussenac, F., Kornemann, F., Rosenberger, D., Brodrecht, M., Oliveira, M., Buntkowsky, G., &#38; Gutmann, T. (2024). Biradicals based on PROXYL containing building blocks for efficient dynamic nuclear polarization in biotolerant media. <i>Journal of Magnetic Resonance Open</i>, <i>20</i>, 100152. <a href=\"https://doi.org/10.1016/j.jmro.2024.100152\">https://doi.org/10.1016/j.jmro.2024.100152</a>"},"page":"100152","intvolume":"        20","year":"2024"},{"status":"public","type":"journal_article","article_type":"original","extern":"1","_id":"59663","user_id":"15911","department":[{"_id":"977"}],"citation":{"bibtex":"@article{Dainone_Prestes_Renucci_Bouché_Morassi_Devaux_Lindemann_George_Jaffrès_Lemaitre_et al._2024, title={Controlling the helicity of light by electrical magnetization switching}, volume={627}, DOI={<a href=\"https://doi.org/10.1038/s41586-024-07125-5\">10.1038/s41586-024-07125-5</a>}, number={8005}, journal={Nature}, publisher={Springer Science and Business Media LLC}, author={Dainone, Pambiang Abel and Prestes, Nicholas Figueiredo and Renucci, Pierre and Bouché, Alexandre and Morassi, Martina and Devaux, Xavier and Lindemann, Markus and George, Jean-Marie and Jaffrès, Henri and Lemaitre, Aristide and et al.}, year={2024}, pages={783–788} }","mla":"Dainone, Pambiang Abel, et al. “Controlling the Helicity of Light by Electrical Magnetization Switching.” <i>Nature</i>, vol. 627, no. 8005, Springer Science and Business Media LLC, 2024, pp. 783–88, doi:<a href=\"https://doi.org/10.1038/s41586-024-07125-5\">10.1038/s41586-024-07125-5</a>.","short":"P.A. Dainone, N.F. Prestes, P. Renucci, A. Bouché, M. Morassi, X. Devaux, M. Lindemann, J.-M. George, H. Jaffrès, A. Lemaitre, B. Xu, M. Stoffel, T. Chen, L. Lombez, D. Lagarde, G. Cong, T. Ma, P. Pigeat, M. Vergnat, H. Rinnert, X. Marie, X. Han, S. Mangin, J.-C. Rojas-Sánchez, J.-P. Wang, M.C. Beard, N.C. Gerhardt, I. Žutić, Y. Lu, Nature 627 (2024) 783–788.","apa":"Dainone, P. A., Prestes, N. F., Renucci, P., Bouché, A., Morassi, M., Devaux, X., Lindemann, M., George, J.-M., Jaffrès, H., Lemaitre, A., Xu, B., Stoffel, M., Chen, T., Lombez, L., Lagarde, D., Cong, G., Ma, T., Pigeat, P., Vergnat, M., … Lu, Y. (2024). Controlling the helicity of light by electrical magnetization switching. <i>Nature</i>, <i>627</i>(8005), 783–788. <a href=\"https://doi.org/10.1038/s41586-024-07125-5\">https://doi.org/10.1038/s41586-024-07125-5</a>","ieee":"P. A. Dainone <i>et al.</i>, “Controlling the helicity of light by electrical magnetization switching,” <i>Nature</i>, vol. 627, no. 8005, pp. 783–788, 2024, doi: <a href=\"https://doi.org/10.1038/s41586-024-07125-5\">10.1038/s41586-024-07125-5</a>.","chicago":"Dainone, Pambiang Abel, Nicholas Figueiredo Prestes, Pierre Renucci, Alexandre Bouché, Martina Morassi, Xavier Devaux, Markus Lindemann, et al. “Controlling the Helicity of Light by Electrical Magnetization Switching.” <i>Nature</i> 627, no. 8005 (2024): 783–88. <a href=\"https://doi.org/10.1038/s41586-024-07125-5\">https://doi.org/10.1038/s41586-024-07125-5</a>.","ama":"Dainone PA, Prestes NF, Renucci P, et al. Controlling the helicity of light by electrical magnetization switching. <i>Nature</i>. 2024;627(8005):783-788. doi:<a href=\"https://doi.org/10.1038/s41586-024-07125-5\">10.1038/s41586-024-07125-5</a>"},"page":"783-788","intvolume":"       627","publication_status":"published","publication_identifier":{"issn":["0028-0836","1476-4687"]},"doi":"10.1038/s41586-024-07125-5","date_updated":"2026-02-25T14:10:20Z","author":[{"first_name":"Pambiang Abel","full_name":"Dainone, Pambiang Abel","last_name":"Dainone"},{"full_name":"Prestes, Nicholas Figueiredo","last_name":"Prestes","first_name":"Nicholas Figueiredo"},{"first_name":"Pierre","full_name":"Renucci, Pierre","last_name":"Renucci"},{"full_name":"Bouché, Alexandre","last_name":"Bouché","first_name":"Alexandre"},{"last_name":"Morassi","full_name":"Morassi, Martina","first_name":"Martina"},{"first_name":"Xavier","full_name":"Devaux, Xavier","last_name":"Devaux"},{"last_name":"Lindemann","full_name":"Lindemann, Markus","first_name":"Markus"},{"first_name":"Jean-Marie","last_name":"George","full_name":"George, Jean-Marie"},{"full_name":"Jaffrès, Henri","last_name":"Jaffrès","first_name":"Henri"},{"first_name":"Aristide","last_name":"Lemaitre","full_name":"Lemaitre, Aristide"},{"first_name":"Bo","full_name":"Xu, Bo","last_name":"Xu"},{"first_name":"Mathieu","last_name":"Stoffel","full_name":"Stoffel, Mathieu"},{"last_name":"Chen","full_name":"Chen, Tongxin","first_name":"Tongxin"},{"first_name":"Laurent","last_name":"Lombez","full_name":"Lombez, Laurent"},{"first_name":"Delphine","full_name":"Lagarde, Delphine","last_name":"Lagarde"},{"first_name":"Guangwei","full_name":"Cong, Guangwei","last_name":"Cong"},{"first_name":"Tianyi","full_name":"Ma, Tianyi","last_name":"Ma"},{"first_name":"Philippe","last_name":"Pigeat","full_name":"Pigeat, Philippe"},{"last_name":"Vergnat","full_name":"Vergnat, Michel","first_name":"Michel"},{"last_name":"Rinnert","full_name":"Rinnert, Hervé","first_name":"Hervé"},{"first_name":"Xavier","full_name":"Marie, Xavier","last_name":"Marie"},{"full_name":"Han, Xiufeng","last_name":"Han","first_name":"Xiufeng"},{"full_name":"Mangin, Stephane","last_name":"Mangin","first_name":"Stephane"},{"first_name":"Juan-Carlos","full_name":"Rojas-Sánchez, Juan-Carlos","last_name":"Rojas-Sánchez"},{"first_name":"Jian-Ping","last_name":"Wang","full_name":"Wang, Jian-Ping"},{"first_name":"Matthew C.","last_name":"Beard","full_name":"Beard, Matthew C."},{"last_name":"Gerhardt","orcid":"0009-0002-5538-231X","full_name":"Gerhardt, Nils Christopher","id":"115298","first_name":"Nils Christopher"},{"full_name":"Žutić, Igor","last_name":"Žutić","first_name":"Igor"},{"last_name":"Lu","full_name":"Lu, Yuan","first_name":"Yuan"}],"volume":627,"abstract":[{"lang":"eng","text":"Controlling the intensity of emitted light and charge current is the basis of transferring and processing information1. By contrast, robust information storage and magnetic random-access memories are implemented using the spin of the carrier and the associated magnetization in ferromagnets2. The missing link between the respective disciplines of photonics, electronics and spintronics is to modulate the circular polarization of the emitted light, rather than its intensity, by electrically controlled magnetization. Here we demonstrate that this missing link is established at room temperature and zero applied magnetic field in light-emitting diodes2,3,4,5,6,7, through the transfer of angular momentum between photons, electrons and ferromagnets. With spin–orbit torque8,9,10,11, a charge current generates also a spin current to electrically switch the magnetization. This switching determines the spin orientation of injected carriers into semiconductors, in which the transfer of angular momentum from the electron spin to photon controls the circular polarization of the emitted light2. The spin–photon conversion with the nonvolatile control of magnetization opens paths to seamlessly integrate information transfer, processing and storage. Our results provide substantial advances towards electrically controlled ultrafast modulation of circular polarization and spin injection with magnetization dynamics for the next-generation information and communication technology12, including space–light data transfer. The same operating principle in scaled-down structures or using two-dimensional materials will enable transformative opportunities for quantum information processing with spin-controlled single-photon sources, as well as for implementing spin-dependent time-resolved spectroscopies."}],"publication":"Nature","keyword":["Lasers","LEDs and light sources","Spintronics"],"language":[{"iso":"eng"}],"year":"2024","quality_controlled":"1","issue":"8005","title":"Controlling the helicity of light by electrical magnetization switching","publisher":"Springer Science and Business Media LLC","date_created":"2025-04-23T13:27:27Z"},{"year":"2022","citation":{"apa":"Heermeier, N., Heuser, T., Große, J., Jung, N., Kaganskiy, A., Lindemann, M., Gerhardt, N. C., Hofmann, M. R., &#38; Reitzenstein, S. (2022). Spin‐Lasing in Bimodal Quantum Dot Micropillar Cavities. <i>Laser &#38;amp; Photonics Reviews</i>, <i>16</i>(4). <a href=\"https://doi.org/10.1002/lpor.202100585\">https://doi.org/10.1002/lpor.202100585</a>","ama":"Heermeier N, Heuser T, Große J, et al. Spin‐Lasing in Bimodal Quantum Dot Micropillar Cavities. <i>Laser &#38;amp; Photonics Reviews</i>. 2022;16(4). doi:<a href=\"https://doi.org/10.1002/lpor.202100585\">10.1002/lpor.202100585</a>","bibtex":"@article{Heermeier_Heuser_Große_Jung_Kaganskiy_Lindemann_Gerhardt_Hofmann_Reitzenstein_2022, title={Spin‐Lasing in Bimodal Quantum Dot Micropillar Cavities}, volume={16}, DOI={<a href=\"https://doi.org/10.1002/lpor.202100585\">10.1002/lpor.202100585</a>}, number={4}, journal={Laser &#38;amp; Photonics Reviews}, publisher={Wiley}, author={Heermeier, Niels and Heuser, Tobias and Große, Jan and Jung, Natalie and Kaganskiy, Arsenty and Lindemann, Markus and Gerhardt, Nils C. and Hofmann, Martin R. and Reitzenstein, Stephan}, year={2022} }","short":"N. Heermeier, T. Heuser, J. Große, N. Jung, A. Kaganskiy, M. Lindemann, N.C. Gerhardt, M.R. Hofmann, S. Reitzenstein, Laser &#38;amp; Photonics Reviews 16 (2022).","mla":"Heermeier, Niels, et al. “Spin‐Lasing in Bimodal Quantum Dot Micropillar Cavities.” <i>Laser &#38;amp; Photonics Reviews</i>, vol. 16, no. 4, Wiley, 2022, doi:<a href=\"https://doi.org/10.1002/lpor.202100585\">10.1002/lpor.202100585</a>.","chicago":"Heermeier, Niels, Tobias Heuser, Jan Große, Natalie Jung, Arsenty Kaganskiy, Markus Lindemann, Nils C. Gerhardt, Martin R. Hofmann, and Stephan Reitzenstein. “Spin‐Lasing in Bimodal Quantum Dot Micropillar Cavities.” <i>Laser &#38;amp; Photonics Reviews</i> 16, no. 4 (2022). <a href=\"https://doi.org/10.1002/lpor.202100585\">https://doi.org/10.1002/lpor.202100585</a>.","ieee":"N. Heermeier <i>et al.</i>, “Spin‐Lasing in Bimodal Quantum Dot Micropillar Cavities,” <i>Laser &#38;amp; Photonics Reviews</i>, vol. 16, no. 4, 2022, doi: <a href=\"https://doi.org/10.1002/lpor.202100585\">10.1002/lpor.202100585</a>."},"intvolume":"        16","publication_status":"published","publication_identifier":{"issn":["1863-8880","1863-8899"]},"quality_controlled":"1","issue":"4","title":"Spin‐Lasing in Bimodal Quantum Dot Micropillar Cavities","doi":"10.1002/lpor.202100585","publisher":"Wiley","date_updated":"2026-02-25T09:38:52Z","date_created":"2025-04-24T06:22:06Z","author":[{"full_name":"Heermeier, Niels","last_name":"Heermeier","first_name":"Niels"},{"full_name":"Heuser, Tobias","last_name":"Heuser","first_name":"Tobias"},{"last_name":"Große","full_name":"Große, Jan","first_name":"Jan"},{"full_name":"Jung, Natalie","last_name":"Jung","first_name":"Natalie"},{"first_name":"Arsenty","last_name":"Kaganskiy","full_name":"Kaganskiy, Arsenty"},{"first_name":"Markus","full_name":"Lindemann, Markus","last_name":"Lindemann"},{"first_name":"Nils C.","full_name":"Gerhardt, Nils C.","last_name":"Gerhardt"},{"last_name":"Hofmann","full_name":"Hofmann, Martin R.","first_name":"Martin R."},{"full_name":"Reitzenstein, Stephan","last_name":"Reitzenstein","first_name":"Stephan"}],"volume":16,"abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title><jats:p>Spin‐controlled lasers are highly interesting photonic devices and have been shown to provide ultrafast polarization dynamics in excess of 200 GHz. In contrast to conventional semiconductor lasers their temporal properties are not limited by the intensity dynamics, but are governed primarily by the interaction of the spin dynamics with the birefringent mode splitting that determines the polarization oscillation frequency. Another class of modern semiconductor lasers are high‐<jats:italic>β</jats:italic> emitters, which benefit from enhanced light–matter interaction due to strong mode confinement in low‐mode‐volume microcavities. In such structures, the emission properties can be tailored by the resonator geometry to realize for instance bimodal emission behavior in slightly elliptical micropillar cavities. This attractive feature is utilized to demonstrate and explore spin‐lasing effects in bimodal high‐<jats:italic>β</jats:italic> quantum dot micropillar lasers. The studied microlasers with a <jats:italic>β</jats:italic>‐factor of 4% show spin‐laser effects with experimental polarization oscillation frequencies up to 15 GHz and predicted frequencies up to about 100 GHz, which are controlled by the ellipticity of the resonator. These results reveal appealing prospects for very compact, ultrafast, and energy‐efficient spin‐lasers and can pave the way for future purely electrically injected spin‐lasers enabled by short injection path lengths.</jats:p>"}],"status":"public","type":"journal_article","publication":"Laser &amp; Photonics Reviews","article_type":"original","keyword":["bimodal micropillar cavities","cavity quantum electrodynamics","micro- lasers","quantum dots","spin-lasers"],"language":[{"iso":"eng"}],"_id":"59666","user_id":"15911"},{"year":"2021","issue":"15","title":"Analysis of the effects of jitter, relative intensity noise, and nonlinearity on a photonic digital-to-analog converter based on optical Nyquist pulse synthesis","date_created":"2022-01-10T11:51:47Z","publisher":"OSA","abstract":[{"lang":"eng","text":"An analysis of an optical Nyquist pulse synthesizer using Mach-Zehnder modulators is presented. The analysis allows to predict the upper limit of the effective number of bits of this type of photonic digital-to-analog converter. The analytical solution has been verified by means of electro-optic simulations. With this analysis the limiting factor for certain scenarios: relative intensity noise, distortions by driving the Mach-Zehnder modulator, or the signal generator phase noise can quickly be identified."}],"publication":"Opt. Express","language":[{"iso":"eng"}],"keyword":["Analog to digital converters","Diode lasers","Laser sources","Phase noise","Signal processing","Wavelength division multiplexers"],"intvolume":"        29","page":"23671–23681","citation":{"apa":"Kress, C., Bahmanian, M., Schwabe, T., &#38; Scheytt, J. C. (2021). Analysis of the effects of jitter, relative intensity noise, and nonlinearity on a photonic digital-to-analog converter based on optical Nyquist pulse synthesis. <i>Opt. Express</i>, <i>29</i>(15), 23671–23681. <a href=\"https://doi.org/10.1364/OE.427424\">https://doi.org/10.1364/OE.427424</a>","short":"C. Kress, M. Bahmanian, T. Schwabe, J.C. Scheytt, Opt. Express 29 (2021) 23671–23681.","mla":"Kress, Christian, et al. “Analysis of the Effects of Jitter, Relative Intensity Noise, and Nonlinearity on a Photonic Digital-to-Analog Converter Based on Optical Nyquist Pulse Synthesis.” <i>Opt. Express</i>, vol. 29, no. 15, OSA, 2021, pp. 23671–23681, doi:<a href=\"https://doi.org/10.1364/OE.427424\">10.1364/OE.427424</a>.","bibtex":"@article{Kress_Bahmanian_Schwabe_Scheytt_2021, title={Analysis of the effects of jitter, relative intensity noise, and nonlinearity on a photonic digital-to-analog converter based on optical Nyquist pulse synthesis}, volume={29}, DOI={<a href=\"https://doi.org/10.1364/OE.427424\">10.1364/OE.427424</a>}, number={15}, journal={Opt. Express}, publisher={OSA}, author={Kress, Christian and Bahmanian, Meysam and Schwabe, Tobias and Scheytt, J. Christoph}, year={2021}, pages={23671–23681} }","ama":"Kress C, Bahmanian M, Schwabe T, Scheytt JC. Analysis of the effects of jitter, relative intensity noise, and nonlinearity on a photonic digital-to-analog converter based on optical Nyquist pulse synthesis. <i>Opt Express</i>. 2021;29(15):23671–23681. doi:<a href=\"https://doi.org/10.1364/OE.427424\">10.1364/OE.427424</a>","ieee":"C. Kress, M. Bahmanian, T. Schwabe, and J. C. Scheytt, “Analysis of the effects of jitter, relative intensity noise, and nonlinearity on a photonic digital-to-analog converter based on optical Nyquist pulse synthesis,” <i>Opt. Express</i>, vol. 29, no. 15, pp. 23671–23681, 2021, doi: <a href=\"https://doi.org/10.1364/OE.427424\">10.1364/OE.427424</a>.","chicago":"Kress, Christian, Meysam Bahmanian, Tobias Schwabe, and J. Christoph Scheytt. “Analysis of the Effects of Jitter, Relative Intensity Noise, and Nonlinearity on a Photonic Digital-to-Analog Converter Based on Optical Nyquist Pulse Synthesis.” <i>Opt. Express</i> 29, no. 15 (2021): 23671–23681. <a href=\"https://doi.org/10.1364/OE.427424\">https://doi.org/10.1364/OE.427424</a>."},"related_material":{"link":[{"relation":"confirmation","url":"https://pubmed.ncbi.nlm.nih.gov/34614628/"}]},"doi":"10.1364/OE.427424","volume":29,"author":[{"id":"13256","full_name":"Kress, Christian","last_name":"Kress","first_name":"Christian"},{"full_name":"Bahmanian, Meysam","id":"69233","last_name":"Bahmanian","first_name":"Meysam"},{"id":"39217","full_name":"Schwabe, Tobias","last_name":"Schwabe","first_name":"Tobias"},{"first_name":"J. Christoph","last_name":"Scheytt","orcid":"https://orcid.org/0000-0002-5950-6618","id":"37144","full_name":"Scheytt, J. Christoph"}],"date_updated":"2023-06-16T06:56:27Z","status":"public","type":"journal_article","department":[{"_id":"58"},{"_id":"230"}],"user_id":"13256","_id":"29204","project":[{"grant_number":"403154102","_id":"302","name":"PONyDAC: PONyDAC II - Präziser Optischer Nyquist-Puls-Synthesizer DAC"},{"grant_number":"13N14882","name":"NyPhE: NyPhE - Nyquist Silicon Photonics Engine","_id":"299"}]},{"abstract":[{"text":"Up to 400 mW of near-IR (1370-1500 nm) femtosecond pulses are generated from an optical parametric amplifier directly driven by a Yb:fiber oscillator delivering 100\\&\\#x00A0;fs pulses at 1036 nm. The process is seeded by a stable supercontinuum obtained from a photonic crystal fiber. We use a single pass through a 3 mm, magnesium oxide-doped, periodically poled LiNbO3 downconversion crystal to produce a near-IR pulse train with a remarkable power stability of 1.4 % (RMS) during one hour. Tuning is achieved by the temperature and the poling period of the nonlinear crystal.","lang":"eng"}],"status":"public","publication":"Applied Optics","type":"journal_article","keyword":["Infrared and far-infrared lasers","Ultrafast lasers","Nonlinear optics","parametric processes","Parametric oscillators and amplifiers","Femtosecond pulses","Fiber lasers","Fused silica","Laser systems","Photonic crystal fibers","Pulse propagation"],"article_type":"original","language":[{"iso":"eng"}],"_id":"6543","project":[{"name":"TRR 142","_id":"53"},{"name":"TRR 142 - Project Area A","_id":"54"},{"_id":"58","name":"TRR 142 - Subproject A1"}],"department":[{"_id":"230"}],"user_id":"49428","year":"2017","intvolume":"        56","page":"3104-3108","citation":{"ieee":"J. Mundry, J. Lohrenz, and M. Betz, “Tunable femtosecond near-IR source by pumping an OPA directly with a 90 MHz Yb:fiber source,” <i>Applied Optics</i>, vol. 56, no. 11, pp. 3104–3108, 2017.","chicago":"Mundry, J., J. Lohrenz, and M. Betz. “Tunable Femtosecond Near-IR Source by Pumping an OPA Directly with a 90 MHz Yb:Fiber Source.” <i>Applied Optics</i> 56, no. 11 (2017): 3104–8. <a href=\"https://doi.org/10.1364/AO.56.003104\">https://doi.org/10.1364/AO.56.003104</a>.","ama":"Mundry J, Lohrenz J, Betz M. Tunable femtosecond near-IR source by pumping an OPA directly with a 90 MHz Yb:fiber source. <i>Applied Optics</i>. 2017;56(11):3104-3108. doi:<a href=\"https://doi.org/10.1364/AO.56.003104\">10.1364/AO.56.003104</a>","apa":"Mundry, J., Lohrenz, J., &#38; Betz, M. (2017). Tunable femtosecond near-IR source by pumping an OPA directly with a 90 MHz Yb:fiber source. <i>Applied Optics</i>, <i>56</i>(11), 3104–3108. <a href=\"https://doi.org/10.1364/AO.56.003104\">https://doi.org/10.1364/AO.56.003104</a>","bibtex":"@article{Mundry_Lohrenz_Betz_2017, title={Tunable femtosecond near-IR source by pumping an OPA directly with a 90 MHz Yb:fiber source}, volume={56}, DOI={<a href=\"https://doi.org/10.1364/AO.56.003104\">10.1364/AO.56.003104</a>}, number={11}, journal={Applied Optics}, publisher={OSA}, author={Mundry, J. and Lohrenz, J. and Betz, M.}, year={2017}, pages={3104–3108} }","mla":"Mundry, J., et al. “Tunable Femtosecond Near-IR Source by Pumping an OPA Directly with a 90 MHz Yb:Fiber Source.” <i>Applied Optics</i>, vol. 56, no. 11, OSA, 2017, pp. 3104–08, doi:<a href=\"https://doi.org/10.1364/AO.56.003104\">10.1364/AO.56.003104</a>.","short":"J. Mundry, J. Lohrenz, M. Betz, Applied Optics 56 (2017) 3104–3108."},"issue":"11","title":"Tunable femtosecond near-IR source by pumping an OPA directly with a 90 MHz Yb:fiber source","doi":"10.1364/AO.56.003104","date_updated":"2022-01-06T07:03:11Z","publisher":"OSA","volume":56,"date_created":"2019-01-09T10:06:44Z","author":[{"first_name":"J.","full_name":"Mundry, J.","last_name":"Mundry"},{"first_name":"J.","last_name":"Lohrenz","full_name":"Lohrenz, J."},{"first_name":"M.","last_name":"Betz","full_name":"Betz, M."}]},{"abstract":[{"text":"Spins in semiconductor quantum dots have been considered as prospective quantum bit excitations. Their coupling to the crystal environment manifests itself in a limitation of the spin coherence times to the microsecond range, both for electron and hole spins. This rather short-lived coherence compared to atomic states asks for manipulations on timescales as short as possible. Due to the huge dipole moment for transitions between the valence and conduction band, pulsed laser systems offer the possibility to perform manipulations within picoseconds or even faster. Here, we report on results that show the potential of optical spin manipulations with currently available pulsed laser systems. Using picosecond laser pulses, we demonstrate optically induced spin rotations of electron and hole spins. We further realize the optical decoupling of the hole spins from the nuclear surrounding at the nanosecond timescales and demonstrate an all-optical spin tomography for interacting electron spin sub-ensembles.","lang":"eng"}],"publication":"Applied Physics B","language":[{"iso":"eng"}],"keyword":["Spin Polarization","Pump Pulse","Trion","Spin Component","Coherence Time"],"year":"2016","issue":"1","title":"Advanced optical manipulation of carrier spins in (In,Ga)As quantum dots","date_created":"2018-08-29T08:35:10Z","publisher":"Springer Nature","status":"public","type":"journal_article","article_type":"original","article_number":"17","department":[{"_id":"15"},{"_id":"230"},{"_id":"35"},{"_id":"170"},{"_id":"293"},{"_id":"292"},{"_id":"35"},{"_id":"290"}],"user_id":"16199","_id":"4246","intvolume":"       122","citation":{"apa":"Varwig, S., Evers, E., Greilich, A., Yakovlev, D. R., Reuter, D., Wieck, A. D., Meier, T., Zrenner, A., &#38; Bayer, M. (2016). Advanced optical manipulation of carrier spins in (In,Ga)As quantum dots. <i>Applied Physics B</i>, <i>122</i>(1), Article 17. <a href=\"https://doi.org/10.1007/s00340-015-6274-y\">https://doi.org/10.1007/s00340-015-6274-y</a>","short":"S. Varwig, E. Evers, A. Greilich, D.R. Yakovlev, D. Reuter, A.D. Wieck, T. Meier, A. Zrenner, M. Bayer, Applied Physics B 122 (2016).","bibtex":"@article{Varwig_Evers_Greilich_Yakovlev_Reuter_Wieck_Meier_Zrenner_Bayer_2016, title={Advanced optical manipulation of carrier spins in (In,Ga)As quantum dots}, volume={122}, DOI={<a href=\"https://doi.org/10.1007/s00340-015-6274-y\">10.1007/s00340-015-6274-y</a>}, number={117}, journal={Applied Physics B}, publisher={Springer Nature}, author={Varwig, S. and Evers, E. and Greilich, A. and Yakovlev, D. R. and Reuter, Dirk and Wieck, A. D. and Meier, Torsten and Zrenner, Artur and Bayer, M.}, year={2016} }","mla":"Varwig, S., et al. “Advanced Optical Manipulation of Carrier Spins in (In,Ga)As Quantum Dots.” <i>Applied Physics B</i>, vol. 122, no. 1, 17, Springer Nature, 2016, doi:<a href=\"https://doi.org/10.1007/s00340-015-6274-y\">10.1007/s00340-015-6274-y</a>.","ama":"Varwig S, Evers E, Greilich A, et al. Advanced optical manipulation of carrier spins in (In,Ga)As quantum dots. <i>Applied Physics B</i>. 2016;122(1). doi:<a href=\"https://doi.org/10.1007/s00340-015-6274-y\">10.1007/s00340-015-6274-y</a>","ieee":"S. Varwig <i>et al.</i>, “Advanced optical manipulation of carrier spins in (In,Ga)As quantum dots,” <i>Applied Physics B</i>, vol. 122, no. 1, Art. no. 17, 2016, doi: <a href=\"https://doi.org/10.1007/s00340-015-6274-y\">10.1007/s00340-015-6274-y</a>.","chicago":"Varwig, S., E. Evers, A. Greilich, D. R. Yakovlev, Dirk Reuter, A. D. Wieck, Torsten Meier, Artur Zrenner, and M. Bayer. “Advanced Optical Manipulation of Carrier Spins in (In,Ga)As Quantum Dots.” <i>Applied Physics B</i> 122, no. 1 (2016). <a href=\"https://doi.org/10.1007/s00340-015-6274-y\">https://doi.org/10.1007/s00340-015-6274-y</a>."},"publication_identifier":{"issn":["0946-2171","1432-0649"]},"publication_status":"published","doi":"10.1007/s00340-015-6274-y","volume":122,"author":[{"full_name":"Varwig, S.","last_name":"Varwig","first_name":"S."},{"first_name":"E.","last_name":"Evers","full_name":"Evers, E."},{"last_name":"Greilich","full_name":"Greilich, A.","first_name":"A."},{"first_name":"D. R.","full_name":"Yakovlev, D. R.","last_name":"Yakovlev"},{"first_name":"Dirk","last_name":"Reuter","full_name":"Reuter, Dirk","id":"37763"},{"first_name":"A. D.","full_name":"Wieck, A. D.","last_name":"Wieck"},{"first_name":"Torsten","orcid":"0000-0001-8864-2072","last_name":"Meier","id":"344","full_name":"Meier, Torsten"},{"first_name":"Artur","orcid":"0000-0002-5190-0944","last_name":"Zrenner","full_name":"Zrenner, Artur","id":"606"},{"first_name":"M.","full_name":"Bayer, M.","last_name":"Bayer"}],"date_updated":"2025-12-16T16:44:01Z"}]