Prof. Wojciech Knap Profile

Prof. Wojciech Knap

Senior Researcher at Univ Montpellier

SPIE Involvement:

Conference Program Committee | Author

Publications (31)

PROCEEDINGS ARTICLE | August 23, 2017

Temperature-driven massless fermions in HgCdTe heterostructures

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

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

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

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

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

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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: Indium arsenide, Teeth, Sensors, Electrodes, Terahertz radiation, Transistors, Antennas, Field effect 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, Oscillators, Cadmium, Dielectrics, Magnetism, Terahertz radiation, Heterojunctions, Fermions, Systems modeling, Absorption

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

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

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

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

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

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

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PROCEEDINGS ARTICLE | February 4, 2013

Room-temperature nanowire terahertz photodetectors

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

KEYWORDS: Semiconductors, Modulation, Sensors, Electrodes, Quantum cascade lasers, Terahertz radiation, Transistors, Antennas, Field effect transistors, 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: Semiconductors, Indium arsenide, Sensors, Electrodes, Silicon, Terahertz radiation, Transistors, Antennas, Field effect transistors, 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: Sensors, Silicon, Amplifiers, Terahertz radiation, Transistors, Antennas, Field effect transistors, Signal detection, Terahertz detection, Plasma

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

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

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

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

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

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

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

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

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

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

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PROCEEDINGS ARTICLE | August 30, 1993

Ultralow background radiation far infrared spectroscopy based on the magnetically tunable selective sources, filters and detectors

Proc. SPIE. 2104, 18th International Conference on Infrared and Millimeter Waves

KEYWORDS: Infrared sensors, Optical filters, Sensors, Spectroscopy, Gallium arsenide, Magnetism, Chromium, Far infrared, Magnetic sensors, Tunable filters

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