Prof. Wojciech Knap Profile

Prof. Wojciech Knap

Senior Researcher at Univ Montpellier

SPIE Involvement:

Conference Program Committee | Author

Publications (28)

PROCEEDINGS ARTICLE | August 23, 2017

Temperature-driven massless fermions in HgCdTe heterostructures

Proc. SPIE. 10383, Terahertz Emitters, Receivers, and Applications VIII

KEYWORDS: Heterojunctions, Particles, Quantum wells, Cadmium, Magnetism, Quantum electrodynamics, Electrons

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PROCEEDINGS ARTICLE | May 13, 2016

Performance evaluation of active sub-Terahertz systems in Degraded Visual Environments (DVE)

Proc. SPIE. 9839, Degraded Visual Environments: Enhanced, Synthetic, and External Vision Solutions 2016

KEYWORDS: Driver's vision enhancers, Terahertz radiation, Absorption, Imaging systems, Cameras, Signal attenuation, Visualization, Bolometers, Atmospheric particles, Sensors

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PROCEEDINGS ARTICLE | March 14, 2015

Room-temperature zero-bias plasmonic THz detection by asymmetric dual-grating-gate HEMT

Proc. SPIE. 9362, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VIII

KEYWORDS: Plasmons, Terahertz radiation, Plasmonics, Field effect transistors, Terahertz detection, Sensors, Phase velocity, Quantum efficiency, Antennas, Diffraction

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SPIE Journal Paper | March 5, 2015

Terahertz magneto-spectroscopy of a point contact based on CdTe/CdMgTe quantum well

Grigelionis, Ignas , Białek, Marcin , Grynberg, Marian , Czapkiewicz, Magdalena , Kolkovskiy, Valery , Wiater, Maciej , Wojciechowski, Tomasz , Wróbel, Jerzy , Wojtowicz, Tomasz , Diakonova, Nina , Knap, Wojciech , Łusakowski, Jerzy

JNP Vol. 9 Issue 01

KEYWORDS: Terahertz radiation, Quantum wells, Chromium, Magnetism, Phonons, Plasmons, Polarons, Semiconducting wafers, Sensors, Plasma

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PROCEEDINGS ARTICLE | September 5, 2014

Terahertz magnetospectroscopy of a point contact based on CdTe/CdMgTe quantum well

Proc. SPIE. 9199, Terahertz Emitters, Receivers, and Applications V

KEYWORDS: Terahertz radiation, Magnetism, Electroluminescent displays, Chromium, Quantum wells, Semiconducting wafers, Polarons, Plasmons, Phonons, Sensors

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PROCEEDINGS ARTICLE | March 7, 2014

High-performance room-temperature THz nanodetectors with a narrowband antenna

Proc. SPIE. 8985, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VII

KEYWORDS: Antennas, Terahertz radiation, Sensors, Field effect transistors, Indium arsenide, Teeth, Electrodes, Transistors, Electromagnetism, Nanowires

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SPIE Journal Paper | November 27, 2013

Emission and detection of terahertz radiation using two-dimensional plasmons in semiconductor nanoheterostructures for nondestructive evaluations

Otsuji, Taiichi , Watanabe, Takayuki , Boubanga Tombet, Stephane Albon , Satou, Akira , Ryzhii, Victor , Popov, Vyacheslav , Knap, Wojciech

OE Vol. 53 Issue 03

KEYWORDS: Terahertz radiation, Plasmons, Field effect transistors, Electrons, Plasma, Sensors, Millimeter wave sensors, Nondestructive evaluation, Received signal strength, Plasmonics

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PROCEEDINGS ARTICLE | September 26, 2013

Magnetospectroscopy of HgTe based topological insulators

Proc. SPIE. 8813, Spintronics VI

KEYWORDS: Quantum wells, Magnetism, Fermions, Terahertz radiation, Dielectrics, Cadmium, Absorption, Systems modeling, Heterojunctions, Oscillators

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PROCEEDINGS ARTICLE | September 24, 2013

The dynamic range of THz broadband FET detectors

Proc. SPIE. 8846, Terahertz Emitters, Receivers, and Applications IV

KEYWORDS: Field effect transistors, Terahertz radiation, Sensors, Free electron lasers, Transistors, Antennas, Indium gallium arsenide, Electron transport, Signal detection, Pulsed laser operation

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PROCEEDINGS ARTICLE | September 24, 2013

Field effect transistor as detector of THz radiation helicity

Proc. SPIE. 8846, Terahertz Emitters, Receivers, and Applications IV

KEYWORDS: Antennas, Field effect transistors, Terahertz radiation, Transistors, Sensors, Phase shifts, Millimeter wave sensors, Polarization, Resistance, Applied physics

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PROCEEDINGS ARTICLE | September 24, 2013

Nanotransistor based THz plasma detectors: low tempeatures, graphene, linearity, and circular polarization studies

Proc. SPIE. 8846, Terahertz Emitters, Receivers, and Applications IV

KEYWORDS: Field effect transistors, Terahertz radiation, Transistors, Sensors, Plasma, Graphene, Modulation, Resistance, Polarization, Terahertz detection

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PROCEEDINGS ARTICLE | May 29, 2013

Emission and detection of terahertz radiation using two dimensional plasmons in semiconductor nano-heterostructures for nondestructive evaluations

Proc. SPIE. 8725, Micro- and Nanotechnology Sensors, Systems, and Applications V

KEYWORDS: Terahertz radiation, Plasmons, Electrons, Field effect transistors, Plasma, Sensors, Millimeter wave sensors, Nondestructive evaluation, Received signal strength, Semiconductors

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PROCEEDINGS ARTICLE | March 27, 2013

Room temperature generation of THz radiation in GaN quantum wells structures

Proc. SPIE. 8624, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VI

KEYWORDS: Terahertz radiation, Gallium nitride, Quantum wells, Plasma, Dielectrics, Antennas, Temperature metrology, Spectroscopy, Heterojunctions, Mirrors

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PROCEEDINGS ARTICLE | March 27, 2013

Antenna-coupled heterostructure field effect transistors for integrated terahertz heterodyne mixers

Proc. SPIE. 8624, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VI

KEYWORDS: Antennas, Terahertz radiation, Transistors, Field effect transistors, Heterojunctions, Gallium nitride, Signal detection, Seaborgium, Heterodyning, Polarization

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PROCEEDINGS ARTICLE | February 4, 2013

Room-temperature nanowire terahertz photodetectors

Proc. SPIE. 8631, Quantum Sensing and Nanophotonic Devices X

KEYWORDS: Terahertz radiation, Sensors, Quantum cascade lasers, Field effect transistors, Antennas, Modulation, Transistors, Electrodes, Semiconductors, Nanowires

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PROCEEDINGS ARTICLE | October 15, 2012

Semiconductor nanowire field-effect transistors: towards high-frequency THz detectors

Proc. SPIE. 8496, Terahertz Emitters, Receivers, and Applications III

KEYWORDS: Terahertz radiation, Field effect transistors, Transistors, Sensors, Indium arsenide, Semiconductors, Antennas, Electrodes, Silicon, Nanowires

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PROCEEDINGS ARTICLE | October 15, 2012

Terahertz detection and emission by field-effect transistors

Proc. SPIE. 8496, Terahertz Emitters, Receivers, and Applications III

KEYWORDS: Terahertz radiation, Sensors, Field effect transistors, Silicon, Transistors, Antennas, Signal detection, Terahertz detection, Plasma, Amplifiers

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PROCEEDINGS ARTICLE | May 9, 2012

Ultrahigh sensitive plasmonic terahertz detectors based on an asymmetric dual-grating gate HEMT structure

Proc. SPIE. 8363, Terahertz Physics, Devices, and Systems VI: Advanced Applications in Industry and Defense

KEYWORDS: Terahertz radiation, Field effect transistors, Sensors, Plasmons, Plasmonics, Photovoltaics, Plasma, Millimeter wave sensors, Transistors, Modulation

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PROCEEDINGS ARTICLE | March 1, 2012

THz transmission modulated by a dc-bias through GaN quantum well structure

Proc. SPIE. 8261, Terahertz Technology and Applications V

KEYWORDS: Terahertz radiation, Electrons, Gallium nitride, Temperature metrology, Quantum wells, Sapphire, Resistance, Nitrogen, Modulation, Physics

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PROCEEDINGS ARTICLE | February 28, 2012

Second harmonic generation in GaN-based photonic crystals for single molecule investigations

Proc. SPIE. 8262, Gallium Nitride Materials and Devices VII

KEYWORDS: Gallium nitride, Second-harmonic generation, Molecules, Harmonic generation, Photonic crystals, Luminescence, Molecular photonics, Dispersion, Nonlinear optics, Waveguides

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PROCEEDINGS ARTICLE | February 28, 2012

AlGaN/GaN based field effect transistors for terahertz detection and imaging

Proc. SPIE. 8262, Gallium Nitride Materials and Devices VII

KEYWORDS: Field effect transistors, Terahertz radiation, Transistors, Signal detection, Sensors, Terahertz detection, Ceramics, Resistance, Capacitance, Millimeter wave sensors

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PROCEEDINGS ARTICLE | January 21, 2012

Room temperature terahertz detectors based on semiconductor nanowire field effect transistors

Proc. SPIE. 8268, Quantum Sensing and Nanophotonic Devices IX

KEYWORDS: Field effect transistors, Indium arsenide, Antennas, Silicon, Sensors, Semiconductors, Terahertz radiation, Capacitance, Scanning electron microscopy, Nanowires

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PROCEEDINGS ARTICLE | May 26, 2011

Terahertz detection by field effect transistors security imaging

Proc. SPIE. 8023, Terahertz Physics, Devices, and Systems V: Advance Applications in Industry and Defense

KEYWORDS: Terahertz radiation, Field effect transistors, Sensors, Plasma, Quantum cascade lasers, Transistors, Terahertz detection, Antennas, Physics, Silicon

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PROCEEDINGS ARTICLE | May 26, 2011

Terahertz imaging with InP high-electron-mobility transistors

Proc. SPIE. 8023, Terahertz Physics, Devices, and Systems V: Advance Applications in Industry and Defense

KEYWORDS: Terahertz radiation, Field effect transistors, Sensors, Transistors, Plasma, Millimeter wave imaging, Terahertz detection, Adhesives, Plasmons, Radiation effects

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PROCEEDINGS ARTICLE | October 20, 2010

THz imaging with low-cost 130 nm CMOS transistors

Proc. SPIE. 7837, Millimetre Wave and Terahertz Sensors and Technology III

KEYWORDS: Terahertz radiation, Sensors, Field effect transistors, Antennas, Transistors, CMOS sensors, Raster graphics, Staring arrays, CMOS technology, Silicon

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PROCEEDINGS ARTICLE | April 27, 2010

Plasmon-resonant microchip emitters and detectors for terahertz sensing and spectroscopic applications

Proc. SPIE. 7671, Terahertz Physics, Devices, and Systems IV: Advanced Applications in Industry and Defense

KEYWORDS: Terahertz radiation, Plasmons, Electrons, Sensors, Spectroscopy, Lamps, Signal detection, Semiconductors, Plasmonics, FT-IR spectroscopy

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SPIE Journal Paper | October 1, 2009

Efficiency enhancement of emission of terahertz radiation by optical excitation from dual grating gate HEMT

Meziani, Yahya , Nishimura, Takuya , Handa, H. , Tsuda, H. , Suemitsu, T. , Knap, Wojtek , Otsuji, Taiichi , Sano, Eiichi , Tsymbalov, Grennady , Popov, Vyacheslav

JNP Vol. 3 Issue 01

KEYWORDS: Terahertz radiation, Plasmons, Plasma, Bolometers, Transistors, Field effect transistors, Silicon, Metals, Spectroscopy, Black bodies

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PROCEEDINGS ARTICLE | May 25, 2004

1/f noise in GaN/AlGaN heterostructure field effect transistors under condition of strong geometric magnetoresistance

Proc. SPIE. 5470, Noise in Devices and Circuits II

KEYWORDS: Magnetism, Resistance, Field effect transistors, Heterojunctions, Gallium nitride, Transistors, Aluminum nitride, Temperature metrology, Gallium arsenide, Metalorganic chemical vapor deposition

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