Prof. Dr. Bernd Witzigmann

2025

• Alhussien Ali Marouf I., Römer F., Schilling M., Biebler F., Höpfner J., Grigoletto M., Wernicke T., Kneissl M., Witzigmann B.:
  Analysis of effective carrier mobility in the multi-quantum wells of DUV AlGaN LEDs by carrier transport simulations
  OPTO (San Francisco, 25. Januar 2025 – 31. Januar 2025)
  In: Proceedings Volume PC13360, Physics and Simulation of Optoelectronic Devices XXXIII 2025
  DOI: 10.1117/12.3042015
• Faber S., Witzigmann B.:
  Theoretical Analysis of a pn-Diode on AIN with Distributed Polarization Doping
  In: physica status solidi (a) (2025)
  ISSN: 1862-6300
  DOI: 10.1002/pssa.202500629
• Utsch B., Römer F., Faber S., Bertram F., Schmidt G., Veit P., Berger C., Dadgar A., Strittmatter A., Christen J., Witzigmann B.:
  Modelling Electron Beam Induced Current in III-Nitride Light Emitting Diodes
  2025 International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2025 (Lodz, POL, 14. September 2025 – 18. September 2025)
  In: Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2025
  DOI: 10.1109/NUSOD64393.2025.11199473

2024

• Cardinali G., Kölle S., Schulz A., Susilo N., Hauer Vidal D., Guttmann M., Blonski MA., Römer F., Witzigmann B., Nippert F., Wagner MR., Wernicke T., Kneissl M.:
  Gain Characteristics of Optically Pumped UVC Lasers with Wide AlGaN Single-Quantum-Well Active Regions
  In: physica status solidi (a) (2024)
  ISSN: 1862-6300
  DOI: 10.1002/pssa.202400067
• Faber S., Römer F., Witzigmann B.:
  Simulation Study of Aluminum Nitride TrenchFETs with Polarization-Induced Doping
  In: physica status solidi (a) (2024)
  ISSN: 1862-6300
  DOI: 10.1002/pssa.202400045
• Hofmann G., Muhin A., Susilo N., Römer F., Wernicke T., Kneissl M., Witzigmann B.:
  Simulation of Carrier Injection Efficiency in AlGaN-based UV-light-emitting Diodes
  In: IEEE Photonics Journal (2024), S. 1-8
  ISSN: 1943-0655
  DOI: 10.1109/JPHOT.2024.3430488
• Hopfner J., Kuhl F., Schilling M., Muhin A., Guttmann M., Hofmann G., Römer F., Wernicke T., Witzigmann B., Kneissl M.:
  Unraveling carrier distribution in far-UVC LEDs by temperature-dependent electroluminescence measurements
  In: Applied Physics Letters 125 (2024), Art.Nr.: 071109
  ISSN: 0003-6951
  DOI: 10.1063/5.0223284
• Jeddi H., Adham K., Zhao Y., Witzigmann B., Römer F., Bermeo M., Borgström MT., Pettersson H.:
  Enhanced LWIR response of InP/InAsP quantum discs-in-nanowire array photodetectors by photogating and ultra-thin ITO contacts
  In: Nanotechnology 35 (2024), Art.Nr.: 215206
  ISSN: 0957-4484
  DOI: 10.1088/1361-6528/ad2bd0
• Kunne M., Kusserow T., Witzigmann B., Hillmer H.:
  Modifying the Complex Refractive Index of Thin-Films for Nanooptical Applications
  2024 International Conference on Optical MEMS and Nanophotonics, OMN 2024 (San Sebastian, 28. Juli 2024 – 1. August 2024)
  In: 2024 International Conference on Optical MEMS and Nanophotonics (OMN) 2024
  DOI: 10.1109/OMN61224.2024.10685281
• Kölle S., Römer F., Cardinali G., Schulz A., Susilo N., Hauer Vidal D., Wernicke T., Kneissl M., Witzigmann B.:
  Optical Gain in AlGaN Quantum Wells: Impact of Higher Energy States
  In: IEEE Photonics Journal 16 (2024), S. 1-5
  ISSN: 1943-0655
  DOI: 10.1109/JPHOT.2024.3379231
• Römer F., Hofmann G., Hoopfner J., Schilling M., Muhin A., Wernicke T., Kneissl M., Witzigmann B.:
  Carrier Transport in a Deep Ultraviolet Mixed Quantum Well Light Emitting Diode
  In: IEEE Photonics Journal (2024), S. 1-6
  ISSN: 1943-0655
  DOI: 10.1109/JPHOT.2024.3351965

2023

• Jeddi H., Witzigmann B., Adham K., Hrachowina L., Borgstrom MT., Pettersson H.:
  Spectrally Tunable Broadband Gate-All-Around InAsP/InP Quantum Discs-in-Nanowire Array Phototransistors with a High Gain-Bandwidth Product
  In: ACS Photonics (2023)
  ISSN: 2330-4022
  DOI: 10.1021/acsphotonics.2c02024
• Kolle S., Römer F., Cardinali G., Schultz A., Susilo N., Vidal DH., Wernicke T., Kneissl M., Witzigmann B.:
  Simulation of optical gain in AlGaN quantum wells
  23rd International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2023 (Turin, 18. September 2023 – 21. September 2023)
  In: Paolo Bardella, Alberto Tibaldi (Hrsg.): Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2023
  DOI: 10.1109/NUSOD59562.2023.10273539
• Römer F., Hofmann G., Höpfner J., Schilling M., Muhin A., Wernicke T., Kneissl M., Witzigmann B.:
  Effect of the Hole Mobility on the Emission Spectrum of a Deep Ultraviolet Mixed Quantum Well Light Emitting Diode
  23rd International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2023 (Turin, ITA, 18. September 2023 – 21. September 2023)
  In: Paolo Bardella, Alberto Tibaldi (Hrsg.): Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2023
  DOI: 10.1109/NUSOD59562.2023.10273498
• Witzigmann B., Römer F.:
  Polarization induced doping for carrier transport in graded III-nitride layers: a simulation study
  Physics and Simulation of Optoelectronic Devices XXXI 2023 (San Francisco, CA, USA, 31. Januar 2023 – 2. Februar 2023)
  In: Bernd Witzigmann, Marek Osinski, Yasuhiko Arakawa (Hrsg.): Proceedings of SPIE – The International Society for Optical Engineering 2023
  DOI: 10.1117/12.2652797

2022

• Chavarin CA., Hardt E., Skibitzki O., Voss T., Eissa M., Spirito D., Capellini G., Baldassarre L., Flesch J., Piehler J., You C., Gruessing S., Römer F., Witzigmann B.:
  Terahertz subwavelength sensing with bio-functionalized germanium fano-resonators
  In: Frequenz (2022)
  ISSN: 0016-1136
  DOI: 10.1515/freq-2022-0078
• Hardt E., Chavarin CA., Gruessing S., Flesch J., Skibitzki O., Spirito D., Vita GM., Simone GD., Masi AD., You C., Witzigmann B., Piehler J., Capellini G.:
  Quantitative protein sensing with germanium THz-antennas manufactured using CMOS processes
  In: Optics Express 30 (2022), S. 40265-40276
  ISSN: 1094-4087
  DOI: 10.1364/OE.469496
• Hofmann G., Höpfner J., Schilling M., Muhin A., Romer F., Wernicke T., Kneissl M., Witzigmann B.:
  Carrier Transport in Multi Colour Deep Ultraviolet Light Emitting Diodes
  2022 International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2022 (Turin, 12. September 2022 – 16. September 2022)
  In: Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2022
  DOI: 10.1109/NUSOD54938.2022.9894749

2021

• Chavarin CA., Hardt E., Gruessing S., Skibitzki O., Costina ., Spirito D., Seifert W., Klesse W., Manganelli CL., You C., Flesch J., Piehler J., Missori M., Baldassarre L., Witzigmann B., Capellini G.:
  n-type Ge/Si antennas for THz sensing
  In: Optics Express 29 (2021), S. 7680-7689
  ISSN: 1094-4087
  DOI: 10.1364/OE.418382
• Flesch J., Bettenhausen M., Kazmierczak M., Klesse WM., Skibitzki O., Psathaki OE., Kurre R., Capellini G., Guha S., Schroeder T., Witzigmann B., You C., Piehler J.:
  Three-dimensional interfacing of cells with hierarchical silicon nano/microstructures for midinfrared interrogation of in situ captured proteins
  In: ACS Applied Materials and Interfaces 13 (2021), S. 8049-8059
  ISSN: 1944-8244
  DOI: 10.1021/acsami.0c22421
• Jeddi H., Karimi M., Witzigmann B., Zeng X., Hrachowina L., Borgstrom MT., Pettersson H.:
  Gain and bandwidth of InP nanowire array photodetectors with embedded photogated InAsP quantum discs
  In: Nanoscale 13 (2021), S. 6227-6233
  ISSN: 2040-3364
  DOI: 10.1039/d1nr00846c
• Mertin P., Witzigmann B.:
  Quantum Information Interface on a Photonic Crystal Chip
  International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD) (, ELECTR NETWORK)
  In: 2021 INTERNATIONAL CONFERENCE ON NUMERICAL SIMULATION OF OPTOELECTRONIC DEVICES (NUSOD), NEW YORK: 2021
  DOI: 10.1109/NUSOD52207.2021.9541493
• Romer F., Witzigmann B.:
  Effect of Inhomogeneous Broadening in Deep Ultraviolet Light Emitting Diodes
  2021 International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2021 (Turin, ITA, 13. September 2021 – 17. September 2021)
  In: Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2021
  DOI: 10.1109/NUSOD52207.2021.9541465
• Römer F., Guttmann M., Wernicke T., Kneissl M., Witzigmann B.:
  Effect of Inhomogeneous Broadening in Ultraviolet III-Nitride Light-Emitting Diodes
  In: Materials 14 (2021)
  ISSN: 1996-1944
  DOI: 10.3390/ma14247890
• Wetterau L., Abert C., Suess D., Albrecht M., Witzigmann B.:
  Extended micromagnetic model for the detection of superparamagnetic labels using a GMR vortex sensor
  In: Journal of Physics Communications 5 (2021)
  ISSN: 2399-6528
  DOI: 10.1088/2399-6528/ac174f

2020

• Amano H., Collazo R., Santi CD., Einfeldt S., Funato M., Glaab J., Hagedorn S., Hirano A., Hirayama H., Ishii R., Kashima Y., Kawakami Y., Kirste R., Kneissl M., Martin R., Mehnke F., Meneghini M., Ougazzaden A., Parbrook PJ., Rajan S., Reddy P., Roemer F., Ruschel J., Sarkar B., Scholz F., Schowalter LJ., Shields P., Sitar Z., Sulmoni L., Wang T., Wernicke T., Weyers M., Witzigmann B., Wu YR., Wunderer T., Zhang Y.:
  The 2020 UV emitter roadmap
  In: Journal of Physics D: Applied Physics 53 (2020), Art.Nr.: 503001
  ISSN: 0022-3727
  DOI: 10.1088/1361-6463/aba64c
• Becker A., Bjelica M., Sichkovskyi V., Eyal O., Rippien A., Schnabel F., Baum P., Witzigmann B., Eisenstein G., Reithmaier J.:
  InP-based narrow-linewidth widely tunable quantum dot distributed feedback lasers InP-basierte weit verstimmbare Quantenpunkt-Laser mit verteilten Rückkopplungsgittern und schmalen Emissionslinienbreiten
  16. ITG-Fachtagung Photonische Netze – 16th ITG Conference on Photonic Networks
  URL: https://www.scopus.com/record/display.uri?eid=2-s2.0-85096694642&origin=inward
• Becker A., Bjelica M., Sichkovskyi V., Eyal O., Rippien A., Schnabel F., Baum P., Witzigmann B., Eisenstein G., Reithmaier JP.:
  InP-basierte weit verstimmbare Quantenpunkt-Laser mit verteilten Rückkopplungsgittern und schmalen Emissionslinienbreiten
  16. ITG-Fachtagung Photonische Netze – 16th ITG Conference on Photonic Networks (Leipzig, 7. Mai 2015 – 8. Mai 2015)
  In: Photonische Netze – 16. ITG-Fachtagung 2020
• Becker A., Septon T., Ghosh S., Bjelica M., Sichkovskyi V., Rippien A., Schnabel F., Witzigmann B., Eisenstein G., Reithmaier JP.:
  Narrow-linewidth 1.5 μm quantum dot distributed feedback lasers for next generation coherent communication
  19. ITG-Fachtagung Photonische Netze – 19th ITG Conference on Photonic Networks (Leipzig, 11. Juni 2018 – 12. Juni 2018)
  In: Photonische Netze – 19. ITG-Fachtagung 2020
• Gruessing S., Witzigmann B., Roemer F., Capellini G., Alvarado C., Klesse WM., Hardt E., Piehler J., You C., Flesch J.:
  Modeling of plasmonic semiconductor THz antennas in square and hexagonal array arrangements
  Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIII 2020 (San Francisco, CA, 3. Februar 2020 – 6. Februar 2020)
  In: Laurence P. Sadwick, Tianxin Yang (Hrsg.): Proceedings of SPIE – The International Society for Optical Engineering 2020
  DOI: 10.1117/12.2543553
• Jentzsch B., Gomez-Iglesias A., Tonkikh A., Witzigmann B.:
  Red surface-emitting SLEDs
  Light-Emitting Devices, Materials, and Applications XXIV 2020 (San Francisco, CA, 3. Februar 2020 – 6. Februar 2020)
  In: Jong Kyu Kim, Michael R. Krames, Martin Strassburg (Hrsg.): Proceedings of SPIE – The International Society for Optical Engineering 2020
  DOI: 10.1117/12.2541968
• Mertin P., Roemer F., Witzigmann B.:
  Numerical analysis of subwavelength field effects in photonic crystal slab cavities
  In: JPhys Photonics 2 (2020), Art.Nr.: 015001
  ISSN: 2515-7647
  DOI: 10.1088/2515-7647/ab60c6
• Romer F., Witzigmann B.:
  Luminescence and Internal Quantum Efficiency of Deep UV Light Emitting Diodes
  2020 International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2020 (Turin, 14. September 2020 – 18. September 2020)
  In: Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2020
  DOI: 10.1109/NUSOD49422.2020.9217731
• Viktoria Schlykow, Viktoria Schlykow, Costanza Lucia Manganelli, Friedhard Römer, Caterina Clausen, Lion Augel, Lion Augel, Jörg Schulze, Jens Katzer, Michael Andreas Schubert, Bernd Witzigmann, Thomas Schroeder, Giovanni Capellini, Giovanni Capellini, Inga Anita Fischer:
  Ge(Sn) nano-island/Si heterostructure photodetectors with plasmonic antennas
  In: Nanotechnology 31 (2020), Art.Nr.: 345203
  ISSN: 0957-4484
  DOI: 10.1088/1361-6528/ab91ef
• Strempel K., Roemer F., Yu F., Meneghini M., Bakin A., Wehmann HH., Witzigmann B., Waag A.:
  Vertical 3D gallium nitride field-effect transistors based on fin structures with inverted p-doped channel
  In: Semiconductor Science and Technology 36 (2020), Art.Nr.: 014002
  ISSN: 0268-1242
  DOI: 10.1088/1361-6641/abc5ff
• Wetterau L., Abert C., Suess D., Albrecht M., Witzigmann B.:
  Micromagnetic simulations of submicron vortex structures for the detection of superparamagnetic labels
  In: Sensors 20 (2020), S. 1-13
  ISSN: 1424-8220
  DOI: 10.3390/s20205819
• Witzigmann B., Roemer F., Martens M., Kuhn C., Wernicke T., Kneissl M.:
  Calculation of optical gain in AlGaN quantum wells for ultraviolet emission
  In: AIP Advances 10 (2020), Art.Nr.: 095307
  ISSN: 2158-3226
  DOI: 10.1063/5.0021890
• Witzigmann B., Romer F.:
  Carrier injection efficiency in III-nitride light emitting diodes: Effective potential correction
  Optical Devices and Materials for Solar Energy and Solid-state Lighting, PVLED 2020 (Washington, DC, 13. Juli 2020 – 16. Juli 2020)
  In: Optics InfoBase Conference Papers 2020

2019

• Bettenhausen M., Gruessing S., Hardt E., Flesch J., Roemer F., Chavarin CA., Klesse WM., You C., Piehler J., Capellini G., Witzigmann B.:
  Impedance Matching of THz Plasmonic Antennas
  In: Journal of Infrared, Millimeter, and Terahertz Waves 40 (2019), S. 929-942
  ISSN: 1866-6892
  DOI: 10.1007/s10762-019-00613-0
• Fatahilah MF., Yu F., Strempel K., Romer F., Maradan D., Meneghini M., Bakin A., Hohls F., Schumacher HW., Witzigmann B., Waag A., Wasisto HS.:
  Top-down GaN nanowire transistors with nearly zero gate hysteresis for parallel vertical electronics
  In: Scientific Reports 9 (2019), Art.Nr.: 10301
  ISSN: 2045-2322
  DOI: 10.1038/s41598-019-46186-9
• Jentzsch B., Gomez-Iglesias A., Tonkikh A., Niebling T., Witzigmann B.:
  Electro-Optical Performance of Surface-Emitting Micromirror Superluminescent Diodes
  In: Physica Status Solidi-Rapid Research Letters 13 (2019), Art.Nr.: 1900221
  ISSN: 1862-6254
  DOI: 10.1002/pssr.201900221
• Jentzsch B., Gomez-Iglesias A., Tonkikh A., Witzigmann B.:
  Analysis of surface-emitting thin-film superluminescent diodes with high efficiency
  Integrated Optics: Design, Devices, Systems, and Applications V 2019 (Prague, 1. April 2019 – 3. April 2019)
  In: Pavel Cheben, Jiri Ctyroky, Inigo Molina-Fernandez (Hrsg.): Proceedings of SPIE – The International Society for Optical Engineering 2019
  DOI: 10.1117/12.2519731
• Jentzsch B., Gomez-Iglesias A., Tonkikh A., Witzigmann B.:
  Surface-emitting superluminescent diode arrays
  2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019 (Munich, 23. Juni 2019 – 27. Juni 2019)
  In: 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019 2019
  DOI: 10.1109/CLEOE-EQEC.2019.8871883
• Jentzsch B., Gomez-Iglesias A., Tonkikh A., Zull H., Kugler S., Witzigmann B.:
  Surface-Emitting Micro-Mirror Superluminescent Diodes: Investigation of Tilt Accuracy Via Far-Field Analysis
  In: physica status solidi (b) 256 (2019), Art.Nr.: 1800494
  ISSN: 0370-1972
  DOI: 10.1002/pssb.201800494
• Karimi M., Zeng X., Witzigmann B., Samuelson L., Borgstrom MT., Pettersson H.:
  High Responsivity of InP/InAsP Nanowire Array Broadband Photodetectors Enhanced by Optical Gating
  In: Nano Letters 19 (2019), S. 8424-8430
  ISSN: 1530-6984
  DOI: 10.1021/acs.nanolett.9b02494
• Roemer F., Witzigmann B., Guttmann M., Susilo N., Wernicke T., Kneissl M.:
  Inhomogeneous spectral broadening in deep ultraviolet light emitting diodes
  Physics and Simulation of Optoelectronic Devices XXVII 2019 (San Francisco, CA, 5. Februar 2019 – 7. Februar 2019)
  In: Marek Osinski, Yasuhiko Arakawa, Bernd Witzigmann (Hrsg.): Proceedings of SPIE – The International Society for Optical Engineering 2019
  DOI: 10.1117/12.2512182
• Ruzzarin M., Meneghini M., De Santi C., Neviani A., Yu F., Strempel K., Fatahilah MF., Witzigmann B., Wasisto HS., Waag A., Meneghesso G., Zanoni E.:
  Demonstration of UV-Induced Threshold Voltage Instabilities in Vertical GaN Nanowire Array-Based Transistors
  In: IEEE Transactions on Electron Devices 66 (2019), S. 2119-2124
  ISSN: 0018-9383
  DOI: 10.1109/TED.2019.2904851
• Septon T., Becker A., Gosh S., Shtendel G., Sichkovskyi V., Schnabel F., Sengill A., Elica MB., Witzigmann B., Reithmaier JP., Eisenstein G.:
  Large linewidth reduction in semiconductor lasers based on atom-like gain material
  In: Optica 6 (2019), S. 1071-1077
  ISSN: 2334-2536
  DOI: 10.1364/OPTICA.6.001071
• Susilo N., Schilling M., Narodovitch M., Yao HH., Li X., Witzigmann B., Enslin J., Guttmann M., Roumeliotis GG., Rychetsky M., Koslow I., Wernicke T., Niermann T., Lehmann M., Kneissl M.:
  Precise determination of polarization fields in c-plane GaN/AlxGa1-xN/GaN heterostructures with capacitance-voltage-measurements
  In: Japanese Journal of Applied Physics 58 (2019), Art.Nr.: SCCB08
  ISSN: 0021-4922
  DOI: 10.7567/1347-4065/ab09dd

2018

• Bettenhausen M., Roemer F., Witzigmann B., Flesch J., Kurre R., Korneev S., Piehler J., You C., Kazmierczak M., Guha S., Capellini G., Schroeder T.:
  Germanium Plasmon Enhanced Resonators for Label-Free Terahertz Protein Sensing
  In: Frequenz 72 (2018), S. 113-122
  ISSN: 0016-1136
  DOI: 10.1515/freq-2018-0009
• Bettenhausen M., Römer F., Witzigmann B., Flesch J., Piehler J., You C., Kazmierczak M., Guha S., Capellini G., Schröder T.:
  Planar Semiconductor THz Antennas Using Spoof Plasmons for Surface Sensing
  2018 IEEE/MTT-S International Microwave Symposium, IMS 2018 (Philadelphia, PA, 10. Juni 2018 – 15. Juni 2018)
  In: IEEE MTT-S International Microwave Symposium Digest 2018
  DOI: 10.1109/MWSYM.2018.8439175
• Kamrani H., Yu F., Frank K., Strempel K., Fatahilah MF., Wasisto HS., Roemer F., Waag A., Witzigmann B.:
  Thermal performance analysis of GaN nanowire and fin-shaped power transistors based on self-consistent electrothermal simulations
  In: Microelectronics Reliability 91 (2018), S. 227-231
  ISSN: 0026-2714
  DOI: 10.1016/j.microrel.2018.10.007
• Kazmierczak M., Flesch J., Mitzloff J., Capellini G., Klesse WM., Skibitzki O., You C., Bettenhausen M., Witzigmann B., Piehler J., Schroeder T., Guha S.:
  Stable and selective self-assembly of α-lipoic acid on Ge(001) for biomolecule immobilization
  In: Journal of Applied Physics 123 (2018), Art.Nr.: 175305
  ISSN: 0021-8979
  DOI: 10.1063/1.5022532
• Septon T., Gosh S., Becker A., Eyal O., Bjelica M., Sichkovskyi V., Rippien A., Schnabel F., Witzigmann B., Reithmaier JP., Eisenstein G.:
  Spectral Characteristics of Narrow Linewidth InAs/InP Quantum Dot Distributed Feedback Lasers
  26th International Semiconductor Laser Conference, ISLC 2018 (Santa Fe, NM, 16. September 2018 – 19. September 2018)
  In: Conference Digest – IEEE International Semiconductor Laser Conference 2018
  DOI: 10.1109/ISLC.2018.8516190
• Shedbalkar A., Witzigmann B.:
  Non equilibrium Green’s function quantum transport for green multi-quantum well nitride light emitting diodes
  In: Optical and Quantum Electronics 50 (2018), Art.Nr.: 67
  ISSN: 0306-8919
  DOI: 10.1007/s11082-018-1335-1
• Witzigmann B., Yu F., Frank K., Strempel K., Fatahilah MF., Schumacher HW., Wasisto HS., Roemer F., Waag A.:
  Performance analysis and simulation of vertical gallium nitride nanowire transistors
  In: Solid-State Electronics 144 (2018), S. 73-77
  ISSN: 0038-1101
  DOI: 10.1016/j.sse.2018.03.005
• Yu F., Strempel K., Fatahilah MF., Zhou H., Roemer F., Bakin A., Witzigmann B., Schumacher HW., Wasisto HS., Waag A.:
  Normally off Vertical 3-D GaN Nanowire MOSFETs with Inverted p-GaN Channel
  In: IEEE Transactions on Electron Devices 65 (2018), S. 2439-2445
  ISSN: 0018-9383
  DOI: 10.1109/TED.2018.2824985

2017

• Becker A., Sichkovskyi V., Bjelica M., Rippien A., Schnabel F., Kaiser M., Eyal O., Witzigmann B., Eisenstein G., Reithmaier JP.:
  Widely tunable narrow-linewidth 1.5 μm light source based on a monolithically integrated quantum dot laser array
  In: Applied Physics Letters 110 (2017), Art.Nr.: 181103
  ISSN: 0003-6951
  DOI: 10.1063/1.4982716
• Guha S., Kazmierczak M., Betthenhausen M., Skibitzki O., You C., Mitzloff J., Flesch J., You C., Piehler J., Witzigmann B., Schroeder T.:
  Plasmonic germanium resonators for CMOS compatible Terahertz chem-bio sensing platform
  14th International Conference on Group IV Photonics, GFP 2017 (Berlin, 23. August 2017 – 25. August 2017)
  In: 14th International Conference on Group IV Photonics, GFP 2017 2017
  DOI: 10.1109/GROUP4.2017.8082204
• Roemer F., Witzigmann B.:
  Effect of oxygen impurities in semipolar III-nitride light emitting diodes
  In: physica status solidi (a) 214 (2017), Art.Nr.: 1600297
  ISSN: 1862-6300
  DOI: 10.1002/pssa.201600297
• Romer F., Witzigmann B.:
  Carrier transport in the multi quantum well region of III-nitride light emitting diodes
  17th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2017 (Copenhagen, 24. Juli 2017 – 28. Juli 2017)
  In: Morten Willatzen, Joachim Piprek (Hrsg.): Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2017
  DOI: 10.1109/NUSOD.2017.8010006
• Römer F., Witzigmann B.:
  Luminescence distribution in the multi-quantum well region of III-nitride light emitting diodes
  Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XXI 2017
  DOI: 10.1117/12.2253668
• Römer F., Witzigmann B.:
  Signature of the ideality factor in III-nitride multi quantum well light emitting diodes
  In: Optical and Quantum Electronics 49 (2017), Art.Nr.: 425
  ISSN: 0306-8919
  DOI: 10.1007/s11082-017-1264-4
• Shedbalkar A., Witzigmann B.:
  NEGF quantum transport for green MQW nitride LEDs
  17th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2017 (Copenhagen, 24. Juli 2017 – 28. Juli 2017)
  In: Morten Willatzen, Joachim Piprek (Hrsg.): Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2017
  DOI: 10.1109/NUSOD.2017.8010009
• Witzigmann B.:
  Nanowire solar cells: Electro-optical performance
  In: Joachim Piprek (Hrsg.): Handbook of Optoelectronic Device Modeling and Simulation: Lasers, Modulators, Photodetectors, Solar Cells, and Numerical Methods, CRC Press, 2017, S. 475-495
  ISBN: 9781315152318
  DOI: 10.4324/9781315152318
• Yu F., Yao S., Roemer F., Witzigmann B., Schimpke T., Strassburg M., Bakin A., Schumacher HW., Peiner E., Wasisto HS., Waag A.:
  GaN nanowire arrays with nonpolar sidewalls for vertically integrated field-effect transistors
  In: Nanotechnology 28 (2017), Art.Nr.: 095206
  ISSN: 0957-4484
  DOI: 10.1088/1361-6528/aa57b6

2016

• Becker A., Sichkovskyi V., Bjelica M., Eyal O., Baum P., Rippien A., Schnabel F., Witzigmann B., Eisenstein G., Reithmaier JP.:
  Narrow-linewidth 1.5 μm quantum dot distributed feedback lasers
  Novel In-Plane Semiconductor Lasers XV (San Francisco, CA, 15. Februar 2016 – 18. Februar 2016)
  In: Alexey A. Belyanin, Peter M. Smowton (Hrsg.): Proceedings of SPIE – The International Society for Optical Engineering 2016
  DOI: 10.1117/12.2209088
• Bjelica M., Witzigmann B.:
  Optimization of 1.55 µm quantum dot edge-emitting lasers for narrow spectral linewidth
  In: Optical and Quantum Electronics 48 (2016), Art.Nr.: 110
  ISSN: 0306-8919
  DOI: 10.1007/s11082-015-0294-z
• Rychetsky M., Koslow I., Avinc B., Rass J., Wernicke T., Bellmann K., Sulmoni L., Hoffmann V., Weyers M., Wild J., Zweck J., Witzigmann B., Kneissl M.:
  Determination of polarization fields in group III-nitride heterostructures by capacitance-voltage-measurements
  In: Journal of Applied Physics 119 (2016), Art.Nr.: 095713
  ISSN: 0021-8979
  DOI: 10.1063/1.4943185
• Shedbalkar A., Andreev Z., Witzigmann B.:
  Simulation of an indium gallium nitride quantum well light-emitting diode with the non-equilibrium Green’s function method
  In: physica status solidi (b) 253 (2016), S. 158-163
  ISSN: 0370-1972
  DOI: 10.1002/pssb.201552276
• Yu F., Ruemmler D., Hartmann J., Caccamo L., Schimpke T., Strassburg M., Gad AE., Bakin A., Wehmann H-., Witzigmann B., Wasisto HS., Waag A.:
  Vertical architecture for enhancement mode power transistors based on GaN nanowires
  In: Applied Physics Letters 108 (2016), Art.Nr.: 213503
  ISSN: 0003-6951
  DOI: 10.1063/1.4952715
• Yu F., Yao S., Römer F., Witzigmann B., Wasisto HS., Waag A.:
  Integration of wet-etched GaN nanowires for vertical power transistors
  6. GMM-Workshops Mikro-Nano-Integration – 6th GMM Workshop on Micro-Nano-Integration (Duisburg, 5. Oktober 2016 – 6. Oktober 2016)
  In: Mikro-Nano-Integration – 6. GMM-Workshops 2016

2015

• Bjelica M., Witzigmann B.:
  Simulation and analysis of 1.55μm quantum dot lasers designed for ultra-narrow spectral linewidth
  15th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2015 (Taipei, 7. September 2015 – 11. September 2015)
  In: Yuh-Renn Wu, Joachim Piprek (Hrsg.): Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2015
  DOI: 10.1109/NUSOD.2015.7292858
• Engelhardt AP., Kolb JS., Roemer F., Weichmann U., Moench H., Witzigmann B.:
  Efficiency optimization and analysis of 808nm VCSELs with a full electro-thermal-optical numerical model
  Vertical-Cavity Surface-Emitting Lasers XIX (San Francisco, CA, 11. Februar 2015 – 12. Februar 2015)
  In: Kent D. Choquette, Chun Lei (Hrsg.): Proceedings of SPIE – The International Society for Optical Engineering 2015
  DOI: 10.1117/12.2077065
• Engelhardt AP., Kolb JS., Roemer F., Weichmann U., Moench H., Witzigmann B.:
  Temperature-dependent investigation of carrier transport, injection, and densities in AlGaAs-based multi-quantum-well active layers for vertical-cavity surface-emitting lasers
  In: Optical Engineering 54 (2015), Art.Nr.: 016107
  ISSN: 0091-3286
  DOI: 10.1117/1.OE.54.1.016107
• Piprek J., Roemer F., Witzigmann B.:
  On the uncertainty of the Auger recombination coefficient extracted from InGaN/GaN light-emitting diode efficiency droop measurements
  In: Applied Physics Letters 106 (2015), Art.Nr.: 101101
  ISSN: 0003-6951
  DOI: 10.1063/1.4914833
• Roemer F., Witzigmann B.:
  Acceptor activation model for III-nitride LEDs
  In: Journal of Computational Electronics 14 (2015), S. 456-463
  ISSN: 1569-8025
  DOI: 10.1007/s10825-015-0666-4
• Roemer F., Witzigmann B.:
  Acceptor impurity activation in III-nitride light emitting diodes
  In: Applied Physics Letters 106 (2015), Art.Nr.: 021107
  ISSN: 0003-6951
  DOI: 10.1063/1.4905870
• Römer F., Witzigmann B.:
  Effect of doping and impurities on the efficiency of III-nitride light emitting diodes
  15th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2015 (Taipei, 7. September 2015 – 11. September 2015)
  In: Yuh-Renn Wu, Joachim Piprek (Hrsg.): Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2015
  DOI: 10.1109/NUSOD.2015.7292793
• Shrestha JC., Blom S., Witzigmann B., Hillmer HH.:
  Investigation of relative intensity noise in asymmetric external cavity semiconductor laser sensors: Influence of dual-line spectral separation and linewidth enhancement factor
  In: IEEE Sensors Journal 15 (2015), S. 6619-6624
  ISSN: 1530-437X
  DOI: 10.1109/JSEN.2015.2464273
• Virgilio M., Witzigmann B., Bolognini G., Guha S., Schroeder T., Capellini G.:
  CMOS-compatible optical switching concept based on strain-induced refractive-index tuning
  In: Optics Express 23 (2015)
  ISSN: 1094-4087
  DOI: 10.1364/OE.23.005930

2014

• Engelhardt AP., Kolb JS., Roemer F., Weichmann U., Moench H., Witzigmann B.:
  Temperature dependent investigation of carrier transport, injection, and densities in 808 nm AlGaAs multi-quantum-well active layers for VCSELs
  Semiconductor Lasers and Laser Dynamics VI (BEL, 14. April 2014 – 17. April 2014)
  In: Proceedings of SPIE – The International Society for Optical Engineering 2014
  DOI: 10.1117/12.2051601
• Jain V., Nowzari A., Wallentin J., Borgstrom MT., Messing ME., Asoli D., Graczyk M., Witzigmann B., Capasso F., Samuelson L., Pettersson H.:
  Study of photocurrent generation in InP nanowire-based p+-i-n+ photodetectors
  In: Nano Research 7 (2014), S. 544-552
  ISSN: 1998-0000
  DOI: 10.1007/s12274-014-0422-2
• Jamali AA., Witzigmann B.:
  Plasmonic Perfect Absorbers for Biosensing Applications
  In: Plasmonics 9 (2014), S. 1265-1270
  ISSN: 1557-1955
  DOI: 10.1007/s11468-014-9740-1
• Moench H., Kolb JS., Engelhardt AP., Gerlach P., Jaeger R., Pollmann-Retsch J., Weichmann U., Witzigmann B.:
  Optimized VCSELs for high-power arrays
  Vertical-Cavity Surface-Emitting Lasers XVIII (USA, 5. Februar 2014 – 6. Februar 2014)
  In: Proceedings of SPIE – The International Society for Optical Engineering 2014
  DOI: 10.1117/12.2037608
• Roemer F., Deppner M., Range C., Witzigmann B.:
  Auger recombination and leakage in InGaN/GaN quantum well LEDs
  Gallium Nitride Materials and Devices IX (USA, 3. Februar 2014 – 6. Februar 2014)
  In: Proceedings of SPIE – The International Society for Optical Engineering 2014
  DOI: 10.1117/12.2037043
• Roemer F., Witzigmann B.:
  Effect of Auger recombination and leakage on the droop in InGaN/GaN quantum well LEDs
  In: Optics Express 22 (2014), S. A1440-A1452
  ISSN: 1094-4087
  DOI: 10.1364/OE.22.0A1440
• Römer F., Witzigmann B., Deppner M., Range C.:
  Auger recombination and leakage in InGaN/GaN quantum well LEDs
  Gallium Nitride Materials and Devices IX (San Francisco, CA)
  DOI: 10.1117/12.2037043
• Witzigmann B.:
  Efficiency analysis of nano light emitting diodes
  16th International Conference on Electromagnetics in Advanced Applications, ICEAA 2014 (Palm Beach, 3. August 2014 – 8. August 2014)
  In: Proceedings – 2014 International Conference on Electromagnetics in Advanced Applications, ICEAA 2014 2014
  DOI: 10.1109/ICEAA.2014.6903897
• Witzigmann B., Bettenhausen M., Mewes M., Fuele H., Roemer F.:
  Simulation of water photo electrolysis with III-nitride semiconductor nano wires
  Physics and Simulation of Optoelectronic Devices XXII (USA, 3. Februar 2014 – 6. Februar 2014)
  In: Proceedings of SPIE – The International Society for Optical Engineering 2014
  DOI: 10.1117/12.2041230
• Zaugg CA., Pallmann WP., Mangold M., Dahhan I., Golling M., Tilma BW., Witzigmann B., Keller U.:
  SESAM-modelocked electrically pumped VECSELs emitting 6.3-ps pulses
  Vertical External Cavity Surface Emitting Lasers (VECSELs) IV (USA, 2. Februar 2014 – 4. Februar 2014)
  In: Proceedings of SPIE – The International Society for Optical Engineering 2014
  DOI: 10.1117/12.2038345

2013

• Dadgar A., Groh L., Metzner S., Neugebauer S., Blaesing J., Hempel T., Bertram F., Christen J., Krost A., Andreev Z., Witzigmann B.:
  Green to blue polarization compensated c-axis oriented multi-quantum wells by AlGaInN barrier layers
  In: Applied Physics Letters 102 (2013), Art.Nr.: 062110
  ISSN: 0003-6951
  DOI: 10.1063/1.4793185
• Deppner M., Roemer F., Witzigmann B.:
  Auger recombination and carrier transport effects in III-nitride quantum well light emitting diodes
  Physics and Simulation of Optoelectronic Devices XXI (USA, 4. Februar 2013 – 7. Februar 2013)
  In: Proceedings of SPIE – The International Society for Optical Engineering 2013
  DOI: 10.1117/12.2008902
• Dolgos D., Meier H., Schenk A., Witzigmann B.:
  Full-band Monte Carlo simulation of single photon avalanche diodes
  2013 26th IEEE Photonics Conference, IPC 2013 (, 8. September 2013 – 12. September 2013)
  In: 2013 IEEE Photonics Conference, IPC 2013 2013
  DOI: 10.1109/IPCon.2013.6656586
• Jamali AA., Kuebler S., Mueglich N., Witzigmann B., Ehresmann A.:
  Electromagnetic study of magneto-optic surface plasmon resonance effects for biosensing applications
  Optical Sensors 2013 (CZE, 15. April 2013 – 17. April 2013)
  In: Proceedings of SPIE – The International Society for Optical Engineering 2013
  DOI: 10.1117/12.2014901
• Jamali AA., Witzigmann B., Morarescu R., Baumert T., Traeger F., Hubenthal F.:
  Local near field assisted ablation of fused silica: An experimental and theoretical study
  In: Applied Physics A: Materials Science and Processing 110 (2013), S. 743-749
  ISSN: 1432-0630
  DOI: 10.1007/s00339-012-7135-8
• Kolb JS., Engelhardt A., Gerlach P., Jager R., Monch H., Weichmann U., Witzigmann B.:
  VCSEL design for high power, densely packed arrays
  2013 26th IEEE Photonics Conference, IPC 2013 (USA, 8. September 2013 – 12. September 2013)
  In: 2013 IEEE Photonics Conference, IPC 2013 2013
  DOI: 10.1109/IPCon.2013.6656640
• Pallmann WP., Zaugg CA., Mangold M., Dahhan I., Golling M., Tilma BW., Witzigmann B., Keller U.:
  Ultrafast electrically pumped VECSELs
  In: Ieee Photonics Journal 5 (2013), Art.Nr.: 6568891
  ISSN: 1943-0655
  DOI: 10.1109/JPHOT.2013.2274773
• Piprek J., Witzigmann B., Park SH., Bellotti E.:
  Introduction to the issue on numerical simulation of optoelectronic devices
  In: IEEE Journal of Selected Topics in Quantum Electronics 19 (2013), Art.Nr.: 6523126
  ISSN: 1077-260X
  DOI: 10.1109/JSTQE.2013.2264071
• Roemer F., Witzigmann B.:
  Computational modelling of surface effects in InGaN/GaN quantum disk nano wire LEDs
  Physics and Simulation of Optoelectronic Devices XXI (USA, 4. Februar 2013 – 7. Februar 2013)
  In: Proceedings of SPIE – The International Society for Optical Engineering 2013
  DOI: 10.1117/12.2006182
• Römer F., Witzigmann B.:
  Computational modelling of surface effects in InGaN/GaN quantum disk nano wire LEDs
  Physics and Simulation of Optoelectronic Devices XXI (San Francisco, CA)
  DOI: 10.1117/12.2006182
• Wallentin J., Anttu N., Asoli D., Huffman M., Aberg I., Magnusson MH., Siefer G., Fuss-Kailuweit P., Dimroth F., Witzigmann B., Xu HQ., Samuelson L., Deppert K., Borgstrom MT.:
  InP nanowire array solar cells achieving 13.8% efficiency by exceeding the ray optics limit
  In: Science 339 (2013), S. 1057-1060
  ISSN: 0036-8075
  DOI: 10.1126/science.1230969
• Yu S., Witzigmann B.:
  A high efficiency dual-junction solar cell implemented as a nanowire array
  In: Optics Express 21 (2013), S. A167-A172
  ISSN: 1094-4087
  DOI: 10.1364/OE.21.00A167

2012

• Akcakoca U., Witzigmann B., Zamora R., Kusserow T., Hillmer H.:
  Frequency domain analysis of modes in a photonic crystal micro-opto-electro-mechanical system with periodically arranged circular holes
  In: Optical and Quantum Electronics 44 (2012), S. 273-277
  ISSN: 0306-8919
  DOI: 10.1007/s11082-012-9550-7
• Andreev Z., Roemer F., Witzigmann B.:
  Simulation of InGaN quantum well LEDs with reduced internal polarization
  In: physica status solidi (a) 209 (2012), S. 487-490
  ISSN: 1862-6300
  DOI: 10.1002/pssa.201100377
• Dahhan I., Barbarin Y., Hoffmann M., Pallmann WP., Zaugg C., Golling M., Suedmeyer T., Keller U., Witzigmann B.:
  Current confinement in EP-VECSELs for high power single-mode operation suitable for passive mode-locking
  Laser Sources and Applications (BEL, 16. April 2012 – 19. April 2012)
  In: Proceedings of SPIE – The International Society for Optical Engineering 2012
  DOI: 10.1117/12.921522
• Deppner M., Bjelica M., Roemer F., Witzigmann B.:
  Computational study of multi-color InGaN/GaN nanowire LEDs with continuously varied Indium composition
  Physics and Simulation of Optoelectronic Devices XX (USA, 23. Januar 2012 – 26. Januar 2012)
  In: Proceedings of SPIE – The International Society for Optical Engineering 2012
  DOI: 10.1117/12.906664
• Deppner M., Roemer F., Witzigmann B.:
  Auger carrier leakage in III-nitride quantum-well light emitting diodes
  In: Physica Status Solidi-Rapid Research Letters 6 (2012), S. 418-420
  ISSN: 1862-6254
  DOI: 10.1002/pssr.201206367
• Dolgos D., Meier H., Schenk A., Witzigmann B.:
  Full-band Monte Carlo simulation of high-energy carrier transport in single photon avalanche diodes with multiplication layers made of InP, InAlAs, and GaAs
  In: Journal of Applied Physics 111 (2012), Art.Nr.: 104508
  ISSN: 0021-8979
  DOI: 10.1063/1.4717729
• Dolgos D., Schenk A., Witzigmann B.:
  Impact ionization scattering model based on the random-k approximation for GaAs, InP, InAlAs, and InGaAs
  In: Journal of Applied Physics 111 (2012), Art.Nr.: 073714
  ISSN: 0021-8979
  DOI: 10.1063/1.3699313
• Koelper C., Sabathil M., Mandl M., Strassburg M., Witzigmann B.:
  All-InGaN phosphorless white light emitting diodes: An efficiency estimation
  In: Journal of Lightwave Technology 30 (2012), S. 2853-2862
  ISSN: 0733-8724
  DOI: 10.1109/JLT.2012.2206561
• Koelper C., Sabathil M., Roemer F., Mandl M., Strassburg M., Witzigmann B.:
  Core-shell InGaN nanorod light emitting diodes: Electronic and optical device properties
  In: physica status solidi (a) 209 (2012), S. 2304-2312
  ISSN: 1862-6300
  DOI: 10.1002/pssa.201228178
• Kupec J., Witzigmann B.:
  Computational electromagnetics for nanowire solar cells
  In: Journal of Computational Electronics 11 (2012), S. 153-165
  ISSN: 1569-8025
  DOI: 10.1007/s10825-012-0388-9
• Roemer F., Deppner M., Andreev Z., Koelper C., Sabathil M., Strassburg M., Ledig J., Li S., Waag A., Witzigmann B.:
  Luminescence and efficiency optimization of InGaN/GaN core-shell nanowire LEDs by numerical modelling
  Physics and Simulation of Optoelectronic Devices XX (, 23. Januar 2012 – 26. Januar 2012)
  In: Proceedings of SPIE – The International Society for Optical Engineering 2012
  DOI: 10.1117/12.908207
• Roemer F., Witzigmann B.:
  Modelling surface effects in nano wire optoelectronic devices
  In: Journal of Computational Electronics 11 (2012), S. 431-439
  ISSN: 1569-8025
  DOI: 10.1007/s10825-012-0424-9
• Witzigmann B., Deppner M., Romer F.:
  InGaN nanorod LEDs: A performance assessment
  12th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2012 (CHN, 28. August 2012 – 31. August 2012)
  In: Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2012
  DOI: 10.1109/NUSOD.2012.6316531
• Witzigmann B., Deppner M., Yu S., Kupec J., Römer F.:
  Nanowire arrays for photovoltaics and lighting: Electronic and optical properties
  Integrated Photonics Research, Silicon and Nanophotonics, IPRSN 2012 (USA, 17. Juni 2012 – 20. Juni 2012)
  In: Integrated Photonics Research, Silicon and Nanophotonics, IPRSN 2012 2012
• Yu S., Kupec J., Witzigmann B.:
  Efficiency analysis of III-V axial and core-shell nanowire solar cells
  In: Journal of Computational and Theoretical Nanoscience 9 (2012), S. 688-695
  ISSN: 1546-1955
  DOI: 10.1166/jctn.2012.2080
• Yu S., Roemer F., Witzigmann B.:
  Analysis of surface recombination in nanowire array solar cells
  Photonics for Solar Energy Systems IV (BEL, 16. April 2012 – 18. April 2012)
  In: Proceedings of SPIE – The International Society for Optical Engineering 2012
  DOI: 10.1117/12.922458
• Yu S., Roemer F., Witzigmann B.:
  Analysis of surface recombination in nanowire array solar cells
  In: Journal of Photonics for Energy 2 (2012), Art.Nr.: 028002
  ISSN: 1947-7988
  DOI: 10.1117/1.JPE.2.028002

2011

• Akcakoca U., Witzigmann B., Zamora R., Kusserow T., Hillmer H.:
  Design and analysis of polarization selective tunable photonic crystal filters
  11th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2011 (ITA, 5. September 2011 – 8. September 2011)
  In: Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2011
  DOI: 10.1109/NUSOD.2011.6041178
• Barbarin Y., Hoffmann M., Pallmann WP., Dahhan I., Kreuter P., Miller M., Baier J., Moench H., Golling M., Suedmeyer T., Witzigmann B., Keller U.:
  Electrically pumped vertical external cavity surface emitting lasers suitable for passive modelocking
  In: IEEE Journal of Selected Topics in Quantum Electronics 17 (2011), S. 1779-1786
  ISSN: 1077-260X
  DOI: 10.1109/JSTQE.2011.2107313
• Deppner M., Römer F., Witzigmann B., Ledig J., Neumann R., Waag A., Bergbauer W., Strassburg M.:
  Computational study of carrier injection in III-nitride core-shell nanowire-LEDs
  2011 IEEE Semiconductor Conference Dresden: Technology, Design, Packaging, Simulation and Test, SCD 2011 (DEU, 27. September 2011 – 28. September 2011)
  In: IEEE – 2011 Semiconductor Conference Dresden: Technology, Design, Packaging, Simulation and Test, SCD 2011 – International Conference, Workshop and Table-Top Exhibition 2011
  DOI: 10.1109/SCD.2011.6068745
• Dolgos D., Meier H., Schenk A., Witzigmann B.:
  Full-band Monte Carlo simulation of high-energy carrier transport in single photon avalanche diodes: Computation of breakdown probability, time to avalanche breakdown, and jitter
  In: Journal of Applied Physics 110 (2011), Art.Nr.: 084507
  ISSN: 0021-8979
  DOI: 10.1063/1.3652844
• Koelper C., Bergbauer W., Drechsel P., Sabathil M., Strassburg M., Lugauer HJ., Witzigmann B., Fuendling S., Li S., Wehmann HH., Waag A.:
  Towards nanorod LEDs: Numerical predictions and controlled growth
  In: Physica Status Solidi (C) Current Topics in Solid State Physics 8 (2011), S. 2305-2307
  ISSN: 1862-6351
  DOI: 10.1002/pssc.201000922
• Koelper C., Sabathil M., Witzigmann B., Roemer F., Bergbauer W., Strassburg M.:
  Optical properties of individual GaN nanorods for light emitting diodes: Influence of geometry, materials, and facets
  Physics and Simulation of Optoelectronic Devices XIX (USA, 24. Januar 2011 – 27. Januar 2011)
  In: Proceedings of SPIE – The International Society for Optical Engineering 2011
  DOI: 10.1117/12.874984
• Kreuter P., Witzigmann B., Fichtner W.:
  Toward frequency-domain modeling of mode locking in semiconductor lasers
  In: IEEE Journal of Selected Topics in Quantum Electronics 17 (2011), S. 1280-1291
  ISSN: 1077-260X
  DOI: 10.1109/JSTQE.2011.2108640
• Kupec J., Akcakoca U., Witzigmann B.:
  Frequency domain analysis of guided resonances and polarization selectivity in photonic crystal membranes
  In: Journal of the Optical Society of America B-Optical Physics 28 (2011), S. 69-78
  ISSN: 0740-3224
  DOI: 10.1364/JOSAB.28.000069
• Pallmann WP., Hoffmann M., Miller M., Baier J., Moench H., Dahhan I., Witzigmann B., Golling M., Barbarin Y., Suedmeyer T., Keller U.:
  Beam quality optimization of electrically pumped VECSELs for passive modelocking
  Vertical External Cavity Surface Emitting Lasers, VECSELs (USA, 24. Januar 2011 – 25. Januar 2011)
  In: Proceedings of SPIE – The International Society for Optical Engineering 2011
  DOI: 10.1117/12.873823
• Witzigmann B., Dahhan I., Kreuter P., Barbarin Y., Hofmann M., Pallmann W., Golling M., Suedmeyer T., Keller U.:
  Design and simulation of electrically pumped mode-locked VECSELs
  Vertical External Cavity Surface Emitting Lasers, VECSELs (USA, 24. Januar 2011 – 25. Januar 2011)
  In: Proceedings of SPIE – The International Society for Optical Engineering 2011
  DOI: 10.1117/12.873240
• Witzigmann B., Yu S., Kupec J.:
  Analysis of semiconductor nanowire arrays for photovoltaics
  2011 13th International Conference on Electromagnetics in Advanced Applications, ICEAA’11 (ITA, 12. September 2011 – 16. September 2011)
  In: Proceedings – 2011 International Conference on Electromagnetics in Advanced Applications, ICEAA’11 2011
  DOI: 10.1109/ICEAA.2011.6046396
• Zamora R., Benes M., Kusserow T., Hillmer H., Akcakoca U., Witzigmann B.:
  Optical characterization of photonic crystals as polarizing structures for tunable optical MEMS devices
  16th International Conference on Optical MEMS and Nanophotonics, OMN2011 (TUR, 8. August 2011 – 11. August 2011)
  In: International Conference on Optical MEMS and Nanophotonics 2011
  DOI: 10.1109/OMEMS.2011.6031069

2010

• Akcakoca U., Marklein R., Witzigmann B., Hillmer H.:
  Electromagnetic analysis of polarization and frequency selective tunable optical MEMS
  10th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2010 (USA, 6. September 2010 – 9. September 2010)
  In: 10th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2010 2010
  DOI: 10.1109/NUSOD.2010.5595655
• Baghdasaryan HV., Knyazyan TM., Baghdasaryan TH., Witzigmann B., Roemer F.:
  Absorption loss influence on optical characteristics of multilayer distributed Bragg reflector: Wavelength-scale analysis by the method of single expression
  In: Opto-Electronics Review 18 (2010), S. 438-445
  ISSN: 1230-3402
  DOI: 10.2478/s11772-010-0049-0
• Barbarin Y., Pallmann WP., Hoffmann M., Dahhan I., Kreuter P., Golling M., Südmeyer T., Witzigmann B., Keller U.:
  Electrically-pumped VECSELs suitable for passive modelocking: Design, simulation and characterization in continuous wave
  2010 IEEE 22nd International Semiconductor Laser Conference, ISLC 2010 (JPN, 26. September 2010 – 30. September 2010)
  In: Conference Digest – IEEE International Semiconductor Laser Conference 2010
  DOI: 10.1109/ISLC.2010.5642699
• Boecklin C., Veprek RG., Steiger S., Witzigmann B.:
  Computational study of an InGaN/GaN nanocolumn light-emitting diode
  In: Physical Review B 81 (2010), Art.Nr.: 155306
  ISSN: 1098-0121
  DOI: 10.1103/PhysRevB.81.155306
• Gallinet B., Kupec J., Witzigmann B., Dupertuis M-.:
  Analysis of photonic crystal defect modes by maximal symmetrization and reduction
  In: Journal of the Optical Society of America B-Optical Physics 27 (2010), S. 1364-1380
  ISSN: 0740-3224
  DOI: 10.1364/JOSAB.27.001364
• Hoffmann M., Barbarin Y., Pallmann WP., Maas DJ., Kreuter P., Witzigmann B., Golling M., Südmeyer T., Keller U.:
  Simulation, design, and characterization of electrically-pumped VECSELs for future passive modelocking
  Conference on Lasers and Electro-Optics, CLEO 2010 (USA, 16. Mai 2010 – 21. Mai 2010)
  In: Optics InfoBase Conference Papers 2010
• Kupec J., Stoop RL., Witzigmann B.:
  Light absorption and emission in nanowire array solar cells
  In: Optics Express 18 (2010), S. 27589-27605
  ISSN: 1094-4087
  DOI: 10.1364/OE.18.027589
• Kupec J., Yu S., Witzigmann B.:
  Zonal efficiency limit calculation for nanostructured solar cells
  Physics and Simulation of Optoelectronic Devices XVIII (USA, 25. Januar 2010 – 28. Januar 2010)
  In: Proceedings of SPIE – The International Society for Optical Engineering 2010
  DOI: 10.1117/12.841356
• Pallmann WP., Hoffmann M., Wittwer VJ., Rudin B., Kreuter P., Witzigmann B., Golling M., Barbarin Y., Südmeyer T., Keller U.:
  Novel ultrafast vertically emitting semiconductor lasers
  36th European Conference and Exhibition on Optical Communication, ECOC 2010 (ITA, 19. September 2010 – 23. September 2010)
  In: European Conference on Optical Communication, ECOC 2010
  DOI: 10.1109/ECOC.2010.5621260
• Rass J., Wernicke T., Scheibenzuber WG., Schwarz UT., Kupec J., Witzigmann B., Vogt P., Einfeldt S., Weyers M., Kneissl M.:
  Polarization of eigenmodes in laser diode waveguides on semipolar and nonpolar GaN
  In: Physica Status Solidi-Rapid Research Letters 4 (2010), S. 1-3
  ISSN: 1862-6254
  DOI: 10.1002/pssr.200903325
• Römer F., Deppner M., Witzigmann B.:
  Physics-based simulation of a core-multishell nanowire light emitting diode
  10th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2010 (USA, 6. September 2010 – 9. September 2010)
  In: 10th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2010 2010
  DOI: 10.1109/NUSOD.2010.5595652
• Scheibenzuber W., Schwarz U., Veprek R., Witzigmann B., Hangleiter A.:
  Optical anisotropy in semipolar (Al,In)GaN laser waveguides
  In: Physica Status Solidi (C) Current Topics in Solid State Physics 7 (2010), S. 1925-1927
  ISSN: 1862-6351
  DOI: 10.1002/pssc.200983646
• Witzigmann B.:
  Computational optoelectronics as analysis and design tool
  20th URSI International Symposium on Electromagnetic Theory, EMTS 2010 (DEU, 16. August 2010 – 19. August 2010)
  In: Symposium Digest – 20th URSI International Symposium on Electromagnetic Theory, EMTS 2010 2010
  DOI: 10.1109/URSI-EMTS.2010.5637155
• Yu S., Kupec J., Witzigmann B.:
  Electro-optical modeling of InP nanowire solar cells: Core-shell vs. axial structure
  10th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2010 (USA, 6. September 2010 – 9. September 2010)
  In: 10th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2010 2010
  DOI: 10.1109/NUSOD.2010.5595667
• Zamora R., Kusserow T., Wulf M., Kanwar K., Witzigmann B., Hillmer H.:
  Structuring of 2D photonic crystal on InP membranes as polarizing element for optical MEMS based sensor systems
  7th International Conference on Networked Sensing Systems, INSS 2010 (DEU, 15. Juni 2010 – 18. Juni 2010)
  In: INSS 2010 – 7th International Conference on Networked Sensing Systems 2010
  DOI: 10.1109/INSS.2010.5572160

2009

• Kupec J., Witzigmann B.:
  Dispersion, Wave Propagation and Efficiency Analysis of Nanowire Solar Cells
  In: Optics Express 17 (2009), S. 10399-10410
  ISSN: 1094-4087
  DOI: 10.1364/OE.17.010399
• Loeser M., Witzigmann B.:
  The ultra weak variational formulation applied to radiation problems with macroscopic sources in inhomogeneous domains
  In: IEEE Journal of Selected Topics in Quantum Electronics 15 (2009), S. 1144-1155
  ISSN: 1077-260X
  DOI: 10.1109/JSTQE.2009.2015153
• Mahler L., Tredicucci A., Beltram F., Walther C., Faist J., Witzigmann B., Beere HE., Ritchie DA.:
  Vertically emitting microdisk lasers
  In: Nature Photonics 3 (2009), S. 46-49
  ISSN: 1749-4893
  DOI: 10.1038/nphoton.2008.248
• Scheibenzuber WG., Schwarz UT., Veprek RG., Witzigmann B., Hangleiter A.:
  Calculation of optical eigenmodes and gain in semipolar and nonpolar InGaN/GaN laser diodes
  In: Physical Review B 80 (2009), Art.Nr.: 115320
  ISSN: 1098-0121
  DOI: 10.1103/PhysRevB.80.115320
• Steiger S., Veprek RG., Witzigmann B.:
  Electroluminescence from a quantum-well LED using NEGF
  2009 13th International Workshop on Computational Electronics, IWCE 2009 (CHN, 27. Mai 2009 – 29. Mai 2009)
  In: Proceedings – 2009 13th International Workshop on Computational Electronics, IWCE 2009 2009
  DOI: 10.1109/IWCE.2009.5091112
• Steiger S., Veprek RG., Witzigmann B.:
  Electroluminescence in nanostructures of different dimensionalities: A comparative simulation study
  Physics and Simulation of Optoelectronic Devices XVII (USA, 26. Januar 2009 – 29. Januar 2009)
  In: Proceedings of SPIE – The International Society for Optical Engineering 2009
  DOI: 10.1117/12.807829
• Steiger S., Veprek RG., Witzigmann B.:
  Tdkp/AQUA: Unified modeling of electroluminescence in nanostructures
  In: Optical and Quantum Electronics 41 (2009), S. 551-557
  ISSN: 0306-8919
  DOI: 10.1007/s11082-010-9360-8
• Steiger S., Veprek RG., Witzigmann B.:
  tdkp/AQUA: Unified modelling of electroluminescence in nanostructures
  9th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2009 (KOR, 14. September 2009 – 17. September 2009)
  In: 9th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2009 2009
  DOI: 10.1109/nusod.2009.5297218
• Veprek RG., Steiger S., Witzigmann B.:
  GaN-based nanocolumn LEDs: Impact of strain engineering on the electro-optical performance
  In: Physica Status Solidi (C) Current Topics in Solid State Physics 6 (2009), S. S506-S509
  ISSN: 1862-6351
  DOI: 10.1002/pssc.200880762
• Witzigmann B., Veprek RG., Steiger S., Kupec J.:
  Comprehensive modeling of optoelectronic nanostructures
  In: Journal of Computational Electronics 8 (2009), S. 389-397
  ISSN: 1569-8025
  DOI: 10.1007/s10825-009-0274-2