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W. Knap

University of Regensburg · DE
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Area of research
Electrical and Electronic Engineering · Atomic and Molecular Physics, and Optics
Research interest
Research interests include Terahertz radiation, Optoelectronics, Materials science, Condensed matter physics, Graphene, and Detector.
h-index
citations
1,681
works
28
NIH funding
primary concept
email

Recent publications

Strongly nonlinear Bernstein modes in graphene reveal plasmon-enhanced near-field magnetoabsorption
Physical review. B./Physical review. B 2026cited by 0position: middledoi
Temperature and electron concentration dependences of 1/<i>f</i> noise in Hg<sub>1−<i>x</i></sub>Cd<sub><i>x</i></sub>Te – evidence for a mobility fluctuations mechanism
Nanoscale 2025cited by 2position: middledoi
Positive terahertz photoconductivity in CdHgTe under hydrostatic pressure
Physical review. B./Physical review. B 2025cited by 0position: middledoi
Temperature dependance of Intrinsic Spin Orbit Coupling Gap in Graphene probed by Terahertz photoconductivity
2023cited by 0position: middledoi
Temperature-dependent zero-field splittings in graphene
Physical review. B./Physical review. B 2022cited by 8position: middledoi
Terahertz Ratchet Effect in Interdigitated HgTe Structures
Physical Review Applied 2022cited by 6position: middledoi
Beatings of ratchet current magneto-oscillations in GaN-based grating gate structures: Manifestation of spin-orbit band splitting
Zenodo (CERN European Organization for Nuclear Research) 2022cited by 0position: middledoi
Roadmap of Terahertz Imaging 2021
Sensors 2021cited by 288position: middledoi
Beatings of ratchet current magneto-oscillations in GaN-based grating gate structures: Manifestation of spin-orbit band splitting
Physical review. B./Physical review. B 2021cited by 17position: middledoi
THz photocurrent magneto-oscillations in GaN-based asymmetric grating gate structures
2021cited by 0position: lastdoi
THz ratchet effect in HgTe-based lateral superlattices
2021cited by 0position: middledoi
Time Resolution and Power Dependence of Transistor Based Terahertz Detectors
2019cited by 2position: lastdoi
Terahertz Detection and Imaging Using Graphene Ballistic Rectifiers
Nano Letters 2017cited by 134position: middledoi
Detection of high intensity THz radiation by InP double heterojunction bipolar transistors
2017cited by 1position: middledoi
Terahertz probing of temperature-driven topological phase transition in HgCdTe bulk crystal and HgTe Quantum Well
2017cited by 0position: middledoi
Temperature-driven massless Kane fermions in HgCdTe crystals
Nature Communications 2016cited by 102position: middledoi
Saturation of photoresponse to intense THz radiation in AlGaN/GaN HEMT detector
Journal of Applied Physics 2016cited by 17position: middledoi
Temperature-driven massless Kane fermions in HgCdTe crystals
2016cited by 3position: middledoi
Terahertz detection by AlGaN/GaN HEMTs at high intensity
2016 21st International Conference on Microwave, Radar and Wireless Communications (MIKON) 2016cited by 2position: middledoi
AlGaN/GaN HEMT’s photoresponse to high intensity THz radiation
Opto-Electronics Review 2015cited by 8position: middledoi
Nonlinear photoresponse of field effect transistors terahertz detectors at high irradiation intensities
Journal of Applied Physics 2014cited by 42position: lastdoi
Recent Results on Broadband Nanotransistor Based THz Detectors
NATO science for peace and security series. B, Physics and biophysics 2014cited by 8position: firstdoi
The dynamic range of THz broadband FET detectors
Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE 2013cited by 7position: lastdoi
Nonlinear photoresponse of FET THz broadband detectors at high power irradiation
2013cited by 4position: lastdoi
Nanotransistor based THz plasma detectors: low tempeatures, graphene, linearity, and circular polarization studies
Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE 2013cited by 2position: firstdoi
Field effect transistor as detector of THz radiation helicity
Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE 2013cited by 0position: middledoi
Graphene field-effect transistors as room-temperature terahertz detectors
Nature Materials 2012cited by 1,060position: middledoi
Helicity sensitive terahertz radiation detection by field effect transistors
Journal of Applied Physics 2012cited by 73position: middledoi
Asymmetric double grating gate detector fabricated on industrial pseudomorphic AlGaAs/InGaAs/AlGaAs heterostructure
2012cited by 0position: middledoi
Terahertz photon helicity sensitive photoresponse in GaAs/AlGaAs high electron mobility transistors
2012cited by 0position: middledoi

Grants

No grants ingested yet.

Frequent collaborators

Sergey Ganichev · University of Regensburg20 papers (2012–2025) · 15 papers (2012–2025) · 12 papers (2013–2019)C. Drexler · University of Regensburg9 papers (2012–2015) · 8 papers (2015–2025)P. Olbrich · University of Regensburg6 papers (2012–2017) · 6 papers (2016–2025)I. Yahniuk · University of Regensburg6 papers (2022–2026) · 5 papers (2016–2023) · 5 papers (2012–2014) · 5 papers (2012–2016) · 5 papers (2012–2016) · 4 papers (2016–2023)M. Schafberger · University of Regensburg4 papers (2012–2015)V. Yu. Kachorovskii · Rensselaer Polytechnic Institute4 papers (2021–2022) · 4 papers (2017–2023) · 4 papers (2012–2013) · 4 papers (2016–2022)Sergey Rumyantsev · University of California System4 papers (2021–2025)A. Gutin · Rensselaer Polytechnic Institute3 papers (2013–2014)
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