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.

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.

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.

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.

M. Brauckmann, E. Narvaez Castaneda, D. Siebert, B. Brecht, J. Förstner, and T. Zentgraf, “Enhancement Of Light-matter Interaction In Topological Waveguides And Resonators,” presented at the META 2025 - The 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Malaga, Spain, 2025.

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.

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.

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.

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.

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.

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.

D. Bauch, D. Siebert, K. D. Jöns, J. Förstner, and S. Schumacher, “On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs,” Advanced Quantum Technologies, vol. 7, no. 1, Art. no. 2300142, 2023, doi: 10.1002/qute.202300142.

H. Farheen et al., “Tailoring the directive nature of optical waveguide antennas,” in Integrated Optics: Devices, Materials, and Technologies XXVII, 2023, p. 124241E, doi: 10.1117/12.2658921.

S. Lange, U. Hilleringmann, C. Hedayat, H. Kuhn, and J. Förstner, “Characterization of Various Environmental Influences on the Inductive Localization,” presented at the 2023 IEEE Conference on Antenna Measurements and Applications (CAMA), Genoa, Italy , 2023, doi: 10.1109/cama57522.2023.10352780.

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.

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.

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.

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.

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.

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.

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.

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.

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.

L. Ebers et al., “Flexible source of correlated photons based on LNOI rib waveguides,” Journal of Physics: Photonics, vol. 4, p. 025001, 2022, doi: 10.1088/2515-7647/ac5a5b.

C. Marschalt et al., “Far-field Calculation from magnetic Huygens Box Data using the Boundary Element Method,” presented at the 2022 Smart Systems Integration (SSI), Grenoble, France, 2022, doi: 10.1109/ssi56489.2022.9901431.

H. Farheen, T. Leuteritz, S. Linden, V. Myroshnychenko, and J. Förstner, “Optimization of optical waveguide antennas for directive emission of light,” Journal of the Optical Society of America B, vol. 39, no. 1, p. 83, 2022, doi: 10.1364/josab.438514.

S. Alhaddad, Y. Grynko, H. Farheen, and J. Förstner, “Numerical analysis of the coherent mechanism producing negative polarization at backscattering from systems of absorbing particles,” Optics Letters, vol. 47, no. 1, p. 58, 2022, doi: 10.1364/ol.444953.

H. Farheen et al., “Broadband optical Ta2O5 antennas for directional emission of light,” Optics Express, vol. 30, no. 11, p. 19288, 2022, doi: 10.1364/oe.455815.

Y. Grynko, Y. Shkuratov, S. Alhaddad, and J. Förstner, “Light Scattering by Large Densely Packed Clusters of Particles,” in Springer Series in Light Scattering - Volume 8: Light Polarization and Multiple Scattering in Turbid Media, vol. 8, A. Kokhanovsky, Ed. Cham: Springer International Publishing, 2022.

H. Nikbakht et al., “Asymmetric, non-uniform 3-dB directional coupler with 300-nm bandwidth and a small footprint,” Optics Letters, vol. 48, no. 2, p. 207, 2022, doi: 10.1364/ol.476537.

Y. Grynko, Y. Shkuratov, S. Alhaddad, and J. Förstner, “Light backscattering from numerical analog of planetary regoliths,” presented at the 16th Europlanet Science Congress 2022, Granada, Spain, 2022, doi:   10.5194/epsc2022-151.

Y. Grynko, Y. Shkuratov, S. Alhaddad, and J. Förstner, “Negative polarization of light at backscattering from a numerical analog of planetary regoliths,” Icarus, vol. 384, p. 115099, 2022, doi: 10.1016/j.icarus.2022.115099.

M. Hammer, L. Ebers, and J. Förstner, “Resonant evanescent excitation of OAM modes in a high-contrast circular step-index fiber,” in Complex Light and Optical Forces XVI, 2022, p. 120170F, doi: 10.1117/12.2612179.

T. Leuteritz et al., “Dielectric travelling wave antennas for directional light emission,” Optics Express, vol. 29, no. 10, Art. no. 14694, 2021, doi: 10.1364/oe.422984.

S. Alhaddad et al., “The HighPerMeshes framework for numerical algorithms on unstructured grids,” Concurrency and Computation: Practice and Experience, p. e6616, 2021, doi: 10.1002/cpe.6616.

S. Alhaddad et al., “HighPerMeshes – A Domain-Specific Language for Numerical Algorithms on Unstructured Grids,” in Euro-Par 2020: Parallel Processing Workshops, Cham, 2021.

D. Bauch, D. F. Heinze, J. Förstner, K. Jöns, and S. Schumacher, “Ultrafast electric control of cavity mediated single-photon and photon-pair generation with semiconductor quantum dots,” Physical Review B, vol. 104, p. 085308, 2021, doi: 10.1103/physrevb.104.085308.

A. Widhalm et al., “Optoelectronic sampling of ultrafast electric transients with single quantum dots,” Applied Physics Letters, vol. 119, p. 181109, 2021, doi: 10.1063/5.0061358.

M. Hammer, L. Ebers, and J. Förstner, “Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics,” OSA Continuum, vol. 4, no. 12, p. 3081, 2021, doi: 10.1364/osac.437549.

J. P. Höpker et al., “Integrated superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides,” Journal of Physics: Photonics, vol. 3, p. 034022, 2021, doi: 10.1088/2515-7647/ac105b.

M. Hammer, L. Ebers, and J. Förstner, “Resonant evanescent excitation of guided waves with high-order optical angular momentum,” Journal of the Optical Society of America B, vol. 38, no. 5, p. 1717, 2021.

J. Förstner et al., “Ultrafast electric control of a single QD exciton,” 2020.

A. Mukherjee et al., “Electrically controlled rapid adiabatic passage in a single quantum dot,” Applied Physics Letters, vol. 116, p. 251103, 2020, doi: 10.1063/5.0012257.

M. Protte et al., “Towards Semiconductor-Superconductor-Crystal Hybrid Integration for Quantum Photonics,” 2020, doi: 10.1364/quantum.2020.qth7a.8.

L. Ebers, M. Hammer, and J. Förstner, “Light diffraction in slab waveguide lenses simulated with the stepwise angular spectrum method,” Optics Express, vol. 28, no. 24, p. 36361, 2020.

V. Myroshnychenko, S. Smirnov, P. M. M. Jose, C. Brosseau, and J. Förstner, “Nonlinear dielectric properties of random paraelectric-dielectric composites,” Acta Materialia, vol. 203, p. 116432, 2020.

M. Hammer, L. Ebers, and J. Förstner, “Hybrid coupled mode modelling of the evanescent excitation of a dielectric tube by semi-guided waves at oblique angles,” Optical and Quantum Electronics, vol. 52, 2020.

Y. Grynko, Y. Shkuratov, and J. Förstner, “Light backscattering from large clusters of densely packed irregular particles,” Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 255, p. 107234, 2020.

S. Lange et al., “Method of superposing a multiple driven magnetic field to minimize stray fields around the receiver for inductive wireless power transmission,” in Smart Systems Integration; 13th International Conference and Exhibition on Integration Issues of Miniaturized Systems, Barcelona, Spain , 2019, pp. 1–4.

M. Hammer, L. Ebers, and J. Förstner, “Oblique evanescent excitation of a dielectric strip: A model resonator with an open optical cavity of unlimited Q,” Optics Express, vol. 27, no. 7, p. 8, 2019, doi: 10.1364/OE.27.009313.

D. Stankevich, L. Hradyska, Y. Shkuratov, Y. Grynko, G. Videen, and J. Förstner, “Light scattering by 3-Foci convex and concave particles in the geometrical optics approximation,” Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 231, p. 49, 2019.

L. Ebers, M. Hammer, M. B. Berkemeier, A. Menzel, and J. Förstner, “Coupled microstrip-cavities under oblique incidence of semi-guided waves: a lossless integrated optical add-drop filter,” OSA Continuum, vol. 2, p. 3288, 2019.

M. Hammer, L. Ebers, and J. Förstner, “Oblique quasi-lossless excitation of a thin silicon slab waveguide: a guided-wave variant of an anti-reflection coating,” Journal of the Optical Society of America B, vol. 36, p. 2395, 2019.

T. Kenter et al., “OpenCL-based FPGA Design to Accelerate the Nodal Discontinuous Galerkin Method for Unstructured Meshes,” presented at the Proc. Int. Symp. on Field-Programmable Custom Computing Machines (FCCM), 2018, doi: 10.1109/FCCM.2018.00037.

A. Widhalm et al., “Ultrafast electric phase control of a single exciton qubit,” Applied Physics Letters, vol. 112, no. 11, p. 111105, 2018, doi: 10.1063/1.5020364.

T. Baumgarten, P. Scholz, D. Sievers, and J. Förstner, “Simulation leitungsgeführter Störspannungen von DC-DC-Wandlern,” in Elektromagnetische Verträglichkeit - Internationale Fachmesse und Kongress 2018, Düsseldorf, 2018, p. 47.

X. Wu et al., “Polarization Conversion Effect in Biological and Synthetic Photonic Diamond Structures,” Advanced Optical Materials, vol. 6, no. 24, p. 1800635, 2018.

Y. Grynko and J. Förstner, “Application of the Discontinuous Galerkin Time Domain Method in Nonlinear Nanoplasmonics,” in 2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET), 2018.

M. Hammer, L. Ebers, A. Hildebrandt, S. Alhaddad, and J. Förstner, “Oblique Semi-Guided Waves: 2-D Integrated Photonics with Negative Effective Permittivity,” in 2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET), 2018.

Y. Grynko, Y. Shkuratov, and J. Förstner, “Intensity surge and negative polarization of light from compact irregular particles,” Optics Letters, vol. 43, no. 15, p. 3562, 2018.

V. Myroshnychenko, N. Nishio, F. J. García de Abajo, J. Förstner, and N. Yamamoto, “Unveiling and Imaging Degenerate States in Plasmonic Nanoparticles with Nanometer Resolution,” ACS Nano, vol. 12, no. 8, pp. 8436–8446, 2018.

L. Ebers, M. Hammer, and J. Förstner, “Oblique incidence of semi-guided planar waves on slab waveguide steps: effects of rounded edges,” Optics Express, vol. 26, no. 14, pp. 18621–18632, 2018.

A. Afzal et al., “Solving Maxwell’s Equations with Modern C++ and SYCL: A Case Study,” in Proceedings of the 29th Annual IEEE International Conference on Application-specific Systems, Architectures and Processors (ASAP), 2018, pp. 49–56.

S. P. Hoffmann et al., “Tailored UV Emission by Nonlinear IR Excitation from ZnO Photonic Crystal Nanocavities,” ACS Photonics, vol. 5, pp. 1933–1942, 2018.

T. Kenter, J. Förstner, and C. Plessl, “Flexible FPGA design for FDTD using OpenCL,” 2017, doi: 10.23919/FPL.2017.8056844.

M. Peter et al., “Directional Emission from Dielectric Leaky-Wave Nanoantennas,” Nano Letters, vol. 17, no. 7, pp. 4178–4183, 2017.

Y. Grynko and J. Förstner, “Simulation of Second Harmonic Generation from Photonic Nanostructures Using the Discontinuous Galerkin Time Domain Method,” in Recent Trends in Computational Photonics, A. Agrawal, Ed. Cham: Springer International Publishing, 2017, pp. 261–284.

X. Song, N. Wang, M. Yan, C. Lin, J. Förstner, and W. Yang, “Direction-tunable enhanced emission from a subwavelength metallic double-nanoslit structure,” Optics Express, vol. 25, no. 12, pp. 13207–13214, 2017.

L. Ebers, M. Hammer, and J. Förstner, “Spiral modes supported by circular dielectric tubes and tube segments,” Optical and Quantum Electronics, vol. 49, no. 4, p. 49:176, 2017.

M. Hammer, S. Alhaddad, and J. Förstner, “Hybrid coupled-mode modeling in 3D: perturbed and coupled channels, and waveguide crossings,” Journal of the Optical Society of America B, vol. 34, no. 3, pp. 613–624, 2017.

S. Dogra, Y. Grynko, E. Zubko, and J. Förstner, “Radar backscattering from a large-grain cometary coma: numerical simulation,” Astronomy & Astrophysics, vol. 608, p. A20, 2017.

Y. Grynko, T. Zentgraf, T. Meier, and J. Förstner, “Simulations of high harmonic generation from plasmonic nanoparticles in the terahertz region,” Applied Physics B, vol. 122, no. 9, p. 242, 2016, doi: 10.1007/s00340-016-6510-0.

S. Blumenthal et al., “Fabrication and characterization of two-dimensional cubic AlN photonic crystal membranes containing zincblende GaN quantum dots,” physica status solidi (c), vol. 13, no. 5–6, pp. 292–296, 2016, doi: 10.1002/pssc.201600010.

Y. Kou and J. Förstner, “Discrete plasmonic solitons in graphene-coated nanowire arrays,” Optics Express, vol. 24, no. 5, p. 4714, 2016.

J. Alberti, H. Linnenbank, S. Linden, Y. Grynko, and J. Förstner, “The role of electromagnetic interactions in second harmonic generation from plasmonic metamaterials,” Applied Physics B, vol. 122, no. 2, pp. 45–50, 2016.

A. V. Konoshonkin, N. V. Kustova, A. G. Borovoi, Y. Grynko, and J. Förstner, “Light scattering by ice crystals of cirrus clouds: comparison of the physical optics methods,” Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 182, pp. 12–23, 2016.

W. Quiring et al., “Phase sensitive properties and coherent manipulation of a photonic crystal microcavity,” Optics Express, vol. 24, no. 18, pp. 20672–20684, 2016.

Y. Grynko, Y. Shkuratov, and J. Förstner, “Light scattering by irregular particles much larger than the wavelength with wavelength-scale surface roughness,” Optics Letters, vol. 41, no. 15, pp. 3491–3493, 2016.

A. V. Konoshonkin et al., “Comparison between the physical-optics approximation and exact methods solving the problem of light scattering by ice crystals of cirrus clouds,” in 22nd International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 2016.

A. Konoshonkin et al., “Light scattering by ice crystals of cirrus clouds: From exact numerical methods to physical-optics approximation,” Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 195, pp. 132–140, 2016.

A. Hildebrandt, S. Alhaddad, M. Hammer, and J. Förstner, “Oblique incidence of semi-guided waves on step-like folds in planar dielectric slabs: Lossless vertical interconnects in 3D integrated photonic circuits,” in Integrated Optics: Devices, Materials, and Technologies XX, 2016.

H. Linnenbank, Y. Grynko, J. Förstner, and S. Linden, “Second harmonic generation spectroscopy on hybrid plasmonic/dielectric nanoantennas,” Light: Science & Applications, vol. 5, no. 1, p. e16013, 2016.

F. Zeuner, M. Muldarisnur, A. Hildebrandt, J. Förstner, and T. Zentgraf, “Coupling Mediated Coherent Control of Localized Surface Plasmon Polaritons,” Nano Letters, vol. 15, no. 6, pp. 4189–4193, 2015, doi: 10.1021/acs.nanolett.5b01381.

D. Mantei et al., “Robust Population Inversion by Polarization Selective Pulsed Excitation,” Scientific Reports, vol. 5, no. 1, p. 10313, 2015.

Y. Kou and J. Förstner, “Subwavelength binary plasmonic solitons,” Optics Letters, vol. 40, no. 6, pp. 851–854, 2015.

M. Hammer, A. Hildebrandt, and J. Förstner, “How planar optical waves can be made to climb dielectric steps,” Optics Letters, vol. 40, no. 16, pp. 3711–3714, 2015.

A. Losquin et al., “Unveiling Nanometer Scale Extinction and Scattering Phenomena through Combined Electron Energy Loss Spectroscopy and Cathodoluminescence Measurements,” Nano Letters, vol. 15, no. 2, pp. 1229–1237, 2015.

M. Hammer, A. Hildebrandt, and J. Förstner, “Full Resonant Transmission of Semiguided Planar Waves Through Slab Waveguide Steps at Oblique Incidence,” Journal of Lightwave Technology, vol. 34, no. 3, pp. 997–1005, 2015.

H. Giefers, C. Plessl, and J. Förstner, “Accelerating Finite Difference Time Domain Simulations with Reconfigurable Dataflow Computers,” ACM SIGARCH Computer Architecture News, vol. 41, no. 5, pp. 65–70, 2014, doi: 10.1145/2641361.2641372.

A. Hildebrandt, M. Reichelt, T. Meier, and J. Förstner, “Engineering plasmonic and dielectric directional nanoantennas,” in Ultrafast Phenomena and Nanophotonics XVIII, 2014, vol. 8984, pp. 89841G-8941G–6, doi: 10.1117/12.2036588.

S. Declair and J. Förstner, “Simulation of Planar Photonic Resonators,” in Handbook of Optical Microcavities, vol. Kapitel 2, A. H. W. Choi, Ed. Pan Stanford Publishing Pte. Ltd., 2014.

Y. Grynko, T. Meier, S. Linden, F. B. P. Niesler, M. Wegener, and J. Förstner, “Optimal second-harmonic generation in split-ring resonator arrays,” in Ultrafast Phenomena and Nanophotonics XVII, 2013, vol. 8623, pp. 86230L-86230L–9, doi: 10.1117/12.2003279.

F. B. Niesler, S. Linden, J. Förstner, Y. Grynko, T. Meier, and M. Wegener, “Collective effects in second-harmonic generation from split-ring-resonator arrays,” in Conference on Lasers and Electro-Optics 2012, San Jose, California United States, 2013, vol. 109, no. 1, doi: 10.1364/qels.2012.qth3e.2.

M. Bürger, M. Ruth, S. Declair, J. Förstner, C. Meier, and D. J. As, “Whispering gallery modes in zinc-blende AlN microdisks containing non-polar GaN quantum dots,” Applied Physics Letters, vol. 102, no. 8, p. 081105, 2013.

M. Bürger et al., “Cubic GaN quantum dots embedded in zinc-blende AlN microdisks,” Journal of Crystal Growth, vol. 378, pp. 287–290, 2013.

Y. Grynko, Y. Shkuratov, and J. Förstner, “Light scattering by randomly irregular dielectric particles larger than the wavelength,” Optical Letters, vol. 38, no. 23, pp. 5153–5156, 2013.

S. Linden, F. B. P. Niesler, J. Förstner, Y. Grynko, T. Meier, and M. Wegener, “Collective Effects in Second-Harmonic Generation from Split-Ring-Resonator Arrays,” Physical Review Letters, vol. 109, no. 1, Art. no. 015502, 2012, doi: 10.1103/physrevlett.109.015502.

Y. Grynko, T. Meier, S. Linden, F. B. P. Niesler, M. Wegener, and J. Förstner, “Near-field coupling and second-harmonic generation in split-ring resonator arrays,” Bad Honnef, 2012, vol. 1475, no. 1, pp. 128–130, doi: 10.1063/1.4750118.