Dr. Quankui K. Yang Profile

Dr. Quankui K. Yang

at Fraunhofer Inst fur Angewandte Festkorperphysik

SPIE Involvement:

Author

Publications (28)

Proceedings Article | 10 June 2024 Poster + Paper

Optimization of AlGaAs-based Bragg-reflection waveguides for entangled photon sources

Thorsten Passow, Quankui Yang, Vivienne Leidel, Robert Keil, Silvia Giudicatti, Marina Preschle, Elke Diwo-Emmer, Patrick Waltereit

Proceedings Volume 12993, 129930H (2024) https://doi.org/10.1117/12.3017405

KEYWORDS: Refractive index, Second harmonic generation, Waveguides, Quantum entanglement, Photon polarization, Simulations, Phase matching

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Proceedings Article | 10 June 2024 Presentation

Enhancement of quantum efficiency via tuning electric-field distribution for long-wavelength infrared InAs/GaSb type-II superlattice detectors

Quankui Yang, Raphael Müller, Mark Wobrock, Wolfgang Luppold, Volker Daumer, Robert Rehm

Proceedings Volume 13046, 130460G (2024) https://doi.org/10.1117/12.3013274

KEYWORDS: Quantum efficiency, Long wavelength infrared, Superlattices, Electric fields, Quantum enhancement, Infrared detectors, Fabry–Perot interferometers, Detector arrays, Coating thickness, Zone plates

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Proceedings Article | 7 June 2024 Presentation + Paper

Advances in entangled-photon sources and single-photon avalanche diodes for quantum technologies in the SWIR

Frank Rutz, Thorsten Passow, Andreas Wörl, Raphael Müller, Quankui Yang, Vivienne Leidel, Andreas Bächle, Elke Diwo-Emmer, Jasmin Niemasz, Silvia Giudicatti, Volker Daumer, Robert Rehm

Proceedings Volume 13025, 130250B (2024) https://doi.org/10.1117/12.3013721

KEYWORDS: Single photon avalanche diodes, Photons, Diffusion, Quantum entanglement, Short wave infrared radiation, Etching, Zinc, Refractive index, Quantum technologies, Quantum processes

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Proceedings Article | 12 July 2023 Open Access

III-V-based high-performance photodetectors in the non-visible regime: from UV to IR

Volker Daumer, R. Aidam, Andreas Bächle, Rachid Driad, Tsvetelina Hugger, R. Keil, Lutz Kirste, Stefano Leone, Wolfgang Luppold, Christian Manz, Raphael Müller, Jasmin Niemasz, Thorsten Passow, Robert Rehm, Frank Rutz, Tim Stadelmann, Mark Wobrock, Andreas Wörl, Quankui Yang

Proceedings Volume 12777, 127772F (2023) https://doi.org/10.1117/12.2689983

KEYWORDS: Dark current, Photodetectors, Detector arrays, Ultraviolet radiation, Mid-IR, Staring arrays, Short wave infrared radiation, Diodes, Readout integrated circuits, Long wavelength infrared

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Proceedings Article | 28 April 2017 Presentation

Hyperspectral imaging for standoff trace detection of explosives using quantum cascade lasers (Conference Presentation)

Frank Fuchs, Stefan Hugger, Jan-Philip Jarvis, Marko Härtelt, Quankui Yang, Marcel Rattunde, Ralf Ostendorf, Christian Schilling, Rachid Driad, Rolf Aidam, Joachim Wagner

Proceedings Volume 10111, 101110A (2017) https://doi.org/10.1117/12.2250006

KEYWORDS: Imaging spectroscopy, Explosives, Standoff detection, Spectroscopy, Backscatter, Explosives detection, Hyperspectral imaging, Quantum cascade lasers, Cameras, Image analysis

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Proceedings Article | 25 May 2016 Paper

Imaging standoff trace detection of explosives using IR-laser based backscattering

F. Fuchs, S. Hugger, J. Jarvis, Q. Yang, R. Ostendorf, Ch. Schilling, W. Bronner, R. Driad, R. Aidam, J. Wagner

Proceedings Volume 9836, 98362I (2016) https://doi.org/10.1117/12.2223581

KEYWORDS: Imaging spectroscopy, Explosives, Backscatter, Spectroscopy, Standoff detection, Hyperspectral imaging, Quantum cascade lasers, Forensic science, Molecular spectroscopy, Laser spectroscopy, Cameras, Mid-IR, Detection and tracking algorithms, Mirrors

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Proceedings Article | 12 May 2016 Paper

Hyperspectral image analysis for standoff trace detection using IR laser spectroscopy

J. Jarvis, F. Fuchs, S. Hugger, R. Ostendorf, L. Butschek, Q. Yang, A. Dreyhaupt, J. Grahmann, J. Wagner

Proceedings Volume 9824, 98240V (2016) https://doi.org/10.1117/12.2223604

KEYWORDS: Hyperspectral imaging, Imaging spectroscopy, Spectroscopy, Backscatter, Target detection, Detection and tracking algorithms, Sensors, Microopto electromechanical systems, Quantum cascade lasers, Data modeling

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Proceedings Article | 13 February 2016 Paper

Quantum cascade laser based active hyperspectral imaging for standoff detection of chemicals on surfaces

S. Hugger, F. Fuchs, J. Jarvis, Q. Yang, M. Rattunde, R. Ostendorf, C. Schilling, R. Driad, W. Bronner, R. Aidam, J. Wagner, T. Tybussek, K. Rieblinger

Proceedings Volume 9755, 97550A (2016) https://doi.org/10.1117/12.2210913

KEYWORDS: Imaging spectroscopy, Hyperspectral imaging, Spectroscopy, Standoff detection, Quantum cascade lasers, Mid-IR, Explosives detection, Backscatter, Cameras, Absorption, Contamination

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Proceedings Article | 22 May 2015 Paper

Standoff trace detection of explosives with infrared hyperspectral imagery

F. Fuchs, S. Hugger, J.-P. Jarvis, Q. Yang, F. Zaum, R. Ostendorf, Ch. Schilling, W. Bronner, R. Driad, R. Aidam, J. Wagner

Proceedings Volume 9467, 94672O (2015) https://doi.org/10.1117/12.2176361

KEYWORDS: Backscatter, Explosives, Imaging spectroscopy, Polarization, Hyperspectral imaging, Spectroscopy, Quantum cascade lasers, Mie scattering, Standoff detection, Imaging systems

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Proceedings Article | 29 May 2013 Paper

Infrared hyperspectral standoff detection of explosives

F. Fuchs, S. Hugger, J. Jarvis, V. Blattmann, M. Kinzer, Q. Yang, R. Ostendorf, W. Bronner, R. Driad, R. Aidam, J. Wagner

Proceedings Volume 8710, 87100I (2013) https://doi.org/10.1117/12.2015682

KEYWORDS: Explosives, Backscatter, Image analysis, Detection and tracking algorithms, Standoff detection, Quantum cascade lasers, Hyperspectral imaging, Cameras, Infrared radiation, Spectroscopy

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Proceedings Article | 4 February 2013 Paper

Broadband-tunable external-cavity quantum cascade lasers for the spectroscopic detection of hazardous substances

S. Hugger, F. Fuchs, J. Jarvis, M. Kinzer, Q. Yang, R. Driad, R. Aidam, J. Wagner

Proceedings Volume 8631, 86312I (2013) https://doi.org/10.1117/12.2008880

KEYWORDS: Spectroscopy, Explosives, Quantum cascade lasers, Absorption, Backscatter, FT-IR spectroscopy, Laser spectroscopy, Mirrors, Sensors, Detection and tracking algorithms

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Proceedings Article | 7 May 2012 Paper

Broadband tunable external cavity quantum cascade lasers for standoff detection of explosives

S. Hugger, F. Fuchs, J. Jarvis, M. Kinzer, Q. Yang, W. Bronner, R. Driad, R. Aidam, K. Degreif, F. Schnürer

Proceedings Volume 8373, 83732G (2012) https://doi.org/10.1117/12.918398

KEYWORDS: Explosives, Quantum cascade lasers, Absorption, Sensors, Backscatter, Spectroscopy, Cameras, Mid-IR, Neodymium, Solids

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Proceedings Article | 21 January 2012 Paper

Standoff detection of explosives with broad band tunable external cavity quantum cascade lasers

F. Fuchs, S. Hugger, M. Kinzer, Q. Yang, W. Bronner, R. Aidam, K. Degreif, S. Rademacher, F. Schnürer, W. Schweikert

Proceedings Volume 8268, 82681N (2012) https://doi.org/10.1117/12.908119

KEYWORDS: Explosives, Quantum cascade lasers, Backscatter, Absorption, Spectroscopy, Standoff detection, Cameras, Eye, Mid-IR, Explosives detection

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SPIE Journal Paper | 1 November 2010

Power scaling of quantum cascade lasers via multiemitter beam combining

Stefan Hugger, Rolf Aidam, Wolfgang Bronner, Frank Fuchs, Rainer Lösch, Quankui Yang, Joachim Wagner, Eugen Romasew, Michael Raab, Hans-Dieter Tholl, Bernd Höfer, André Matthes

OE, Vol. 49, Issue 11, 111111, (November 2010) https://doi.org/10.1117/12.10.1117/1.3498766

KEYWORDS: Quantum cascade lasers, Microlens array, Semiconductor lasers, Diffraction gratings, Microlens, Collimation, Mirrors, Silicon, Waveguides, Diffraction

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SPIE Journal Paper | 1 November 2010

Imaging standoff detection of explosives using widely tunable midinfrared quantum cascade lasers

Frank Fuchs, Stefan Hugger, Michel Kinzer, Rolf Aidam, Wolfgang Bronner, Rainer Lösch, Quankui Yang, Kai Degreif, Frank Schnürer

OE, Vol. 49, Issue 11, 111127, (November 2010) https://doi.org/10.1117/12.10.1117/1.3506195

KEYWORDS: Quantum cascade lasers, Explosives, Spectroscopy, Standoff detection, Contamination, Infrared radiation, Absorption, Absorbance, Reflectivity, Imaging systems

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Proceedings Article | 12 October 2010 Paper

Beam steering in mid-infrared emitting quantum-cascade lasers

Michel Kinzer, Frank Fuchs, Stefan Hugger, Borislav Hinkov, Wolfgang Bronner, Rainer Loesch, Rolf Aidam, Quankui Yang, Hans Dieter Tholl

Proceedings Volume 7836, 78360R (2010) https://doi.org/10.1117/12.869851

KEYWORDS: Beam steering, Quantum cascade lasers, Mid-IR, Temperature metrology, Laser countermeasures, Time resolved spectroscopy, Waveguides, Resonators, Collimation, Infrared spectroscopy

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Proceedings Article | 28 August 2010 Paper

Imaging stand-off detection of explosives by quantum cascade laser based backscattering spectroscopy

Frank Fuchs, Stefan Hugger, Michel Kinzer, Borislav Hinkov, Rolf Aidam, Wolfgang Bronner, Rainer Lösch, Quankui Yang, Kai Degreif, Frank Schnürer, Wenka Schweikert

Proceedings Volume 7808, 780810 (2010) https://doi.org/10.1117/12.861356

KEYWORDS: Quantum cascade lasers, Explosives, Backscatter, Spectroscopy, Imaging systems, Explosives detection, Imaging spectroscopy, Absorption, Cameras, Contamination

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Proceedings Article | 23 January 2010 Paper

Imaging stand-off detection of explosives using tunable MIR quantum cascade lasers

Frank Fuchs, Borislav Hinkov, Stefan Hugger, Jan Kaster, Rolf Aidam, Wolfgang Bronner, Klaus Köhler, Quankui Yang, Sven Rademacher, Kai Degreif, Frank Schnürer, Wenka Schweikert

Proceedings Volume 7608, 760809 (2010) https://doi.org/10.1117/12.840464

KEYWORDS: Quantum cascade lasers, Imaging systems, Infrared radiation, Absorption, Thermography, Mid-IR, Explosives detection, Explosives, Standoff detection, Infrared imaging

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Proceedings Article | 23 January 2010 Paper

Mid-infrared quantum cascade detectors for applications in spectroscopy and pyrometry

Daniel Hofstetter, Fabrizio Giorgetta, Esther Baumann, Quankui Yang, Christian Manz, Klaus Köhler

Proceedings Volume 7608, 76081N (2010) https://doi.org/10.1117/12.853351

KEYWORDS: Sensors, Quantum wells, Quantum chromodynamics, Quantum well infrared photodetectors, Mid-IR, Absorption, Resistance, Photodetectors, Photovoltaics, Spectroscopy

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Proceedings Article | 26 September 2009 Paper

Infrared semiconductor laser modules for DIRCM applications

J. Wagner, S. Hugger, B. Rösener, F. Fuchs, M. Rattunde, Q. Yang, W. Bronner, R. Aidam, K. Köhler, M. Raab, E. Romasew, H. Tholl

Proceedings Volume 7483, 74830F (2009) https://doi.org/10.1117/12.830342

KEYWORDS: Quantum cascade lasers, Semiconductor lasers, Directed infrared countermeasures, Semiconductors, Infrared lasers, Continuous wave operation, Infrared radiation, Optical pumping, Modulation, Mirrors

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Proceedings Article | 17 September 2009 Paper

Broad band tunable quantum cascade lasers for stand-off detection of explosives

Borislav Hinkov, Frank Fuchs, Jan Kaster, Quankui Yang, Wolfgang Bronner, Rolf Aidam, Klaus Köhler

Proceedings Volume 7484, 748406 (2009) https://doi.org/10.1117/12.830358

KEYWORDS: Reflectivity, Quantum cascade lasers, Explosives, Absorption, Imaging systems, Thin films, Aluminum, Absorbance, Explosives detection, Infrared imaging

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Proceedings Article | 9 May 2009 Paper

Spectral beam combining of quantum cascade lasers in an external cavity

S. Hugger, F. Fuchs, Rolf Aidam, W. Bronner, R. Loesch, Q. Yang, N. Schulz, J. Wagner, E. Romasew, M. Raab, H. Tholl

Proceedings Volume 7325, 73250H (2009) https://doi.org/10.1117/12.818505

KEYWORDS: Quantum cascade lasers, Semiconductor lasers, Diffraction gratings, Diffraction, Output couplers, Polarization, Laser beam propagation, Defense and security, Mid-IR, Mirrors

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Proceedings Article | 2 October 2008 Paper

Infrared semiconductor lasers for DIRCM applications

J. Wagner, N. Schulz, B. Rösener, M. Rattunde, Q. Yang, F. Fuchs, C. Manz, W. Bronner, C. Mann, K. Köhler, M. Raab, E. Romasev, H. Tholl

Proceedings Volume 7115, 71150A (2008) https://doi.org/10.1117/12.800126

KEYWORDS: Quantum cascade lasers, Semiconductor lasers, Directed infrared countermeasures, Semiconductors, Infrared radiation, Continuous wave operation, Polarization, Mirrors, Pulsed laser operation, Infrared lasers

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SPIE Journal Paper | 1 May 2007

µ-probe photoluminescence study of mid-IR quantum cascade lasers based on antimonide ternary and quaternary barriers

Miriam Vitiello, Gaetano Scamarcio, Vincenzo Spagnolo, Quankui Yang, Christian Manz, Joachim Wagner, Dmitri Revin, John Cockburn

JNP, Vol. 1, Issue 01, 013512, (May 2007) https://doi.org/10.1117/12.10.1117/1.2748470

KEYWORDS: Quantum cascade lasers, Interfaces, Electrons, Gallium, Antimony, Luminescence, Signal detection, Heterojunctions, Mid-IR, Temperature metrology

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Proceedings Article | 27 February 2007 Paper

Electronic and thermal properties of Sb-based QCLs operating in the first atmospheric window

Miriam Vitiello, Gaetano Scamarcio, Vincenzo Spagnolo, Quankui Yang, Christian Manz, Joachim Wagner, Dmitry Revin, John Cockburn

Proceedings Volume 6485, 648508 (2007) https://doi.org/10.1117/12.698576

KEYWORDS: Quantum cascade lasers, Gallium, Electrons, Temperature metrology, Antimony, Interfaces, Signal detection, Heterojunctions, Mid-IR, Krypton

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Proceedings Article | 17 October 2006 Paper

Spectral tuning and mode competition of quantum cascade lasers studied by time-resolved Fourier transform spectroscopy

F. Fuchs, B. Kirn, Ch. Mann, Q. Yang, W. Bronner, B. Raynor, K. Köhler, J. Wagner

Proceedings Volume 6386, 63860I (2006) https://doi.org/10.1117/12.685379

KEYWORDS: Quantum cascade lasers, Spectroscopy, Pulsed laser operation, Signal detection, Fabry–Perot interferometers, Time resolved spectroscopy, FT-IR spectroscopy, Spectral resolution, Spectroscopes, Signal processing

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Proceedings Article | 11 May 2004 Paper

Single-mode InP-based quantum cascade lasers for applications in trace-gas sensing

Christian Mann, Quankui Yang, Frank Fuchs, Wolfgang Bronner, Klaus Köhler, Thomas Beyer, Marcus Braun, Armin Lambrecht

Proceedings Volume 5365, (2004) https://doi.org/10.1117/12.528964

KEYWORDS: Quantum cascade lasers, NOx, Absorbance, Signal detection, Pulsed laser operation, Temperature metrology, Refractive index, Solids, Absorption, Continuous wave operation

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Proceedings Article | 1 July 2003 Paper

Trap centers and minority carrier lifetimes in InAs/(GaIn)Sb superlattice long wavelength photodetectors

Quankui Yang, C. Pfahler, J. Schmitz, Wilfried Pletschen, Frank Fuchs

Proceedings Volume 4999, (2003) https://doi.org/10.1117/12.479548

KEYWORDS: Superlattices, Photodiodes, Temperature metrology, Diffusion, Electroluminescence, Photodetectors, Diodes, Stereolithography, Solids, Resistance

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Showing 5 of 28 publications

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