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126 Publications
2025 | Journal Article | LibreCat-ID: 60891
M. Hammer, S. Khan, B. Taheri, H. Farheen, and J. Förstner, “TFLN channel waveguides of rib and strip type: Properties of guided modes,” Optics Continuum, vol. 4, no. 10, p. 2356, 2025, doi: 10.1364/optcon.569959.
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2025 | Conference Paper | LibreCat-ID: 61760
H. Farheen et al., “Topology-optimized silicon nitride coupler for integrated single-photon emitters,” in Photonic Computing: From Materials and Devices to Systems and Applications II, 2025, doi: 10.1117/12.3065734.
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2025 | Dissertation | LibreCat-ID: 62167 | 
S. Lange, Analyse und Modellierung eines induktiven Ortungsprozesses unter Berücksichtigung der elektromagnetischen Wechselwirkungen planarer Spulensysteme. Paderborn: Universitätsbibliothek Paderborn, 2025.
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2025 | Conference Paper | LibreCat-ID: 62296
C. Spieker, J. Förstner, J. Hölscher, L. Claes, and B. Henning, “Modeling and simulation of the behavior of piezoceramics with the discontinuous Galerkin method,” in 2025 International Congress on Ultrasonics, 2025, pp. 126–129, doi: 10.5162/ultrasonic2025/a18-a1.
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2025 | Conference Paper | LibreCat-ID: 62297
J. Hölscher, O. Friesen, L. Claes, C. Spieker, J. Förstner, and B. Henning, “Multiscale thermo-piezoelectric simulations using the finite element method,” in 2025 International Congress on Ultrasonics, 2025, pp. 130–133, doi: 10.5162/ultrasonic2025/a18-a2.
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2024 | Journal Article | LibreCat-ID: 54668 |
M. Hammer et al., “Estimation of losses caused by sidewall roughness in thin-film lithium niobate rib and strip waveguides,” Optics Express, vol. 32, no. 13, p. 22878, 2024, doi: 10.1364/oe.521766.
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2024 | Journal Article | LibreCat-ID: 52700 |
V. Myroshnychenko, P. M. Mulavarickal Jose, H. Farheen, S. Ejaz, C. Brosseau, and J. Förstner, “From Swiss-cheese to discrete ferroelectric composites: assessing the ferroelectric butterfly shape in polarization loops,” Physica Scripta, vol. 99, no. 4, p. 045952, 2024, doi: 10.1088/1402-4896/ad3172.
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2024 | Journal Article | LibreCat-ID: 55751 |
N. Üstün, H. Farheen, M. Hammer, and J. Förstner, “Symmetry-protected TM modes in rib-like, plus-shaped optical waveguides with shallow etching,” Journal of the Optical Society of America B, vol. 41, no. 9, p. 2077, 2024, doi: 10.1364/josab.528729.
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2024 | Journal Article | LibreCat-ID: 55989 |
H. Farheen, S. Joshi, J. C. Scheytt, V. Myroshnychenko, and J. Förstner, “An efficient compact blazed grating antenna for optical phased arrays,” Journal of Physics: Photonics, vol. 6, p. 045010, 2024, doi: 10.1088/2515-7647/ad6ed4.
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2024 | Journal Article | LibreCat-ID: 56193
M. Hammer, H. Farheen, and J. Förstner, “Guided modes of thin-film lithium niobate slabs,” Optics Continuum, p. 532822, 2024, doi: 10.1364/optcon.532822.
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2024 | Conference Paper | LibreCat-ID: 57528
D. Schröder, U. Kiefner, C. Hedayat, and J. Förstner, “Evaluation of Measurement Noise Effects in the Close Environment of Equivalent Near-Field Sources,” 2024, doi: 10.1109/emceurope59828.2024.10722220.
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2023 | Journal Article | LibreCat-ID: 48599 |
D. Bauch, D. Siebert, K. Jöns, J. Förstner, and S. Schumacher, “On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs,” Advanced Quantum Technologies, 2023, doi: 10.1002/qute.202300142.
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2023 | Preprint | LibreCat-ID: 43246 |
D. Bauch, D. Siebert, K. Jöns, J. Förstner, and S. Schumacher, “On-demand indistinguishable and entangled photons at telecom frequencies using tailored cavity designs.” 2023.
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2023 | Journal Article | LibreCat-ID: 50012 |
H. Farheen, A. Strauch, J. C. Scheytt, V. Myroshnychenko, and J. Förstner, “Optimized, Highly Efficient Silicon Antennas for Optical Phased Arrays,” Photonics and Nanostructures - Fundamentals and Applications, vol. 58, p. 101207, 2023, doi: 10.1016/j.photonics.2023.101207.
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2023 | Journal Article | LibreCat-ID: 43245 |
M. Hammer, H. Farheen, and J. Förstner, “How to suppress radiative losses in high-contrast integrated Bragg gratings,” Journal of the Optical Society of America B, vol. 40, no. 4, p. 862, 2023, doi: 10.1364/josab.485725.
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2023 | Conference Paper | LibreCat-ID: 43052
H. Farheen, A. Strauch, J. C. Scheytt, V. Myroshnychenko, and J. Förstner, “Optimized silicon antennas for optical phased arrays,” in Integrated Optics: Devices, Materials, and Technologies XXVII, 2023, p. 124241D, doi: 10.1117/12.2658716.
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2023 | Conference Paper | LibreCat-ID: 50466
H. Farheen, S. Joshi, J. C. Scheytt, V. Myroshnychenko, and J. Förstner, “Increasing the upward radiation efficiency of optical phased arrays using asymmetric silicon horn antennas,” 2023, doi: 10.1109/ipc57732.2023.10360519.
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2023 | Journal Article | LibreCat-ID: 43018 |
S. Alhaddad, J. Förstner, and Y. Grynko, “Numerical study of light backscattering from layers of absorbing irregular particles larger than the wavelength,” Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 302, Art. no. 108557, 2023, doi: 10.1016/j.jqsrt.2023.108557.
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2023 | Journal Article | LibreCat-ID: 44097 |
D. Hähnel et al., “A multi-mode super-fano mechanism for enhanced third harmonic generation in silicon metasurfaces,” Light: Science & Applications, vol. 12, no. 1, p. 97, 2023, doi: https://doi.org/10.1038/s41377-023-01134-1.
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2023 | Journal Article | LibreCat-ID: 45596 |
D. Hähnel, J. Förstner, and V. Myroshnychenko, “Efficient Modeling and Tailoring of Nonlinear Wavefronts in Dielectric Metasurfaces,” ACS Photonics, 2023, doi: 10.1021/acsphotonics.2c01967.
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