Dr. Daniel Hofstetter Profile

Dr. Daniel Hofstetter

Assistant Professor at Univ de Neuchatel

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Author

Publications (19)

Proceedings Article | 28 August 2010 Paper

Performance improvement of AlN/GaN-based intersubband detectors thanks to quantum dot active regions

Daniel Hofstetter, Joab Di Francesco, Esther Baumann, Fabrizio Giorgetta, Prem Kandaswamy, Aparna Das, Sirona Valdueza-Felip, Eva Monroy

Proceedings Volume 7808, 78080A (2010) https://doi.org/10.1117/12.861569

KEYWORDS: Quantum wells, Sensors, Quantum dots, Absorption, Photodetectors, Frequency conversion, Aluminum nitride, Signal detection, Temperature metrology, Gallium nitride

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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 | 28 February 2008 Paper

AlN/GaN-superlattice structures for the fabrication of intersubband detectors in the telecom wavelength range

Daniel Hofstetter, Esther Baumann, Fabrizio Giorgetta, Manfred Maier, Fabien Guillot, Edith Bellet-Amalric, Eva Monroy

Proceedings Volume 6894, 68940S (2008) https://doi.org/10.1117/12.762123

KEYWORDS: Absorption, Sensors, Quantum wells, Superlattices, Nonlinear optics, Gallium nitride, Aluminum nitride, Semiconductors, Frequency conversion, Stereolithography

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Proceedings Article | 15 February 2008 Paper

Characterization of an optically pumped ZnO-based 3rd order distributed feedback laser

Daniel Hofstetter, Yargo Bonetti, Esther Baumann, Fabrizio Giorgetta, Abdel-Hamid El-Shaer, Andrey Bakin, Andreas Waag, Rüdiger Schmidt-Grund, Marius Grundmann, Mathias Schubert

Proceedings Volume 6895, 68950J (2008) https://doi.org/10.1117/12.762128

KEYWORDS: Zinc oxide, Diffraction gratings, Optical pumping, Luminescence, Refractive index, Temperature metrology, Diffraction, Fabry–Perot interferometers, Waveguides, Laser damage threshold

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Proceedings Article | 23 February 2007 Paper

High-performamce continuous wave quantum cascade lasers with widely spaced operation frequencies

A. Wittmann, L. Hvozdara, S. Blaser, M. Giovannini, J. Faist, D. Hofstetter, M. Beck, E. Gini

Proceedings Volume 6485, 64850P (2007) https://doi.org/10.1117/12.713734

KEYWORDS: Continuous wave operation, Quantum cascade lasers, Temperature metrology, Silicon, Indium gallium arsenide, Waveguides, Spectroscopy, Surgery, Oscillators, Heatsinks

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Proceedings Article | 7 September 2006 Paper

Mid-infrared quantum cascade detectors on InP

Marcel Graf, Nicolas Hoyler, Marcella Giovannini, Thierry Aellen, Jérôme Faist, Daniel Hofstetter

Proceedings Volume 6294, 62940P (2006) https://doi.org/10.1117/12.682646

KEYWORDS: Sensors, Quantum chromodynamics, Quantum well infrared photodetectors, Quantum cascade lasers, Absorption, Mid-IR, Heterodyning, Capacitance, Electrons, Superlattices

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Proceedings Article | 21 June 2004 Paper

Absorption in InGaN-on-sapphire LED structures: comparison between photocurrent measurement method (PMM) and photothermal deflection spectroscopy (PDS)

Sven Schad, Barbara Neubert, Jens Bruening, Christoph Eichler, Frank Habel, Ferdinand Scholz, Peter Unger, Daniel Hofstetter

Proceedings Volume 5366, (2004) https://doi.org/10.1117/12.528783

KEYWORDS: Absorption, Light emitting diodes, Sapphire, Gallium nitride, Scattering, Waveguides, Spectroscopy, Absorbance, Sensors, Data modeling

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Proceedings Article | 3 July 2003 Paper

Recent advances in quantum cascade laser research and novel applications

Daniel Hofstetter, Mattias Beck, Stephane Blaser, Thierry Aellen, Jerome Faist, Ursula Oesterle, Marc Ilegems, Emilio Gini, Hans Melchior

Proceedings Volume 4995, (2003) https://doi.org/10.1117/12.475746

KEYWORDS: Continuous wave operation, Quantum cascade lasers, Modulation, Waveguides, Heterojunctions, Telecommunications, Sensors, Laser damage threshold, Temperature metrology, Signal detection

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Proceedings Article | 23 September 2002 Paper

Continuous-wave operation of quantum cascade lasers above room temperature

Mattias Beck, Daniel Hofstetter, Thierry Aellen, Richard Maulini, Jerome Faist, Emilio Gini

Proceedings Volume 4817, (2002) https://doi.org/10.1117/12.452080

KEYWORDS: Quantum cascade lasers, Continuous wave operation, Temperature metrology, Semiconductor lasers, Pulsed laser operation, Waveguides, Heterojunctions, Indium gallium arsenide, Laser applications

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Proceedings Article | 23 September 2002 Paper

Quantum cascade lasers for open- and closed-path measurement of atmospheric trace gases

J. Barry McManus, David Nelson, Joanne Shorter, Mark Zahniser, Antoine Mueller, Yargo Bonetti, Mattias Beck, Daniel Hofstetter, Jerome Faist

Proceedings Volume 4817, (2002) https://doi.org/10.1117/12.452093

KEYWORDS: Quantum cascade lasers, Absorption, Pulsed laser operation, Sensors, Semiconductor lasers, Gases, Laser processing, Cryogenics, Atmospheric sensing, Nitrogen

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Proceedings Article | 22 May 2002 Paper

High-performance quantum cascade lasers: physics and applications

Jerome Faist, Daniel Hofstetter, Mattias Beck, Thierry Aellen, Michel Rochat, Stephane Blaser

Proceedings Volume 4651, (2002) https://doi.org/10.1117/12.467957

KEYWORDS: Quantum cascade lasers, Waveguides, Temperature metrology, Superlattices, Silicon, Sensors, Phonons, Physics, Free space optics, Indium gallium arsenide

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Proceedings Article | 14 July 2000 Paper

Quantum cascade lasers: between intersubband physics and applications

Jerome Faist, Daniel Hofstetter, Antoine Muller, Mattias Beck

Proceedings Volume 3944, (2000) https://doi.org/10.1117/12.391436

KEYWORDS: Quantum cascade lasers, Light emitting diodes, Quantum wells, Polarization, Waveguides, Physics, Laser applications, Laser development, Refractive index, Absorption

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Proceedings Article | 6 August 1999 Paper

Characterization of InGaN/AlGaN multiple-quantum-well laser diodes

Michael Kneissl, David Bour, Linda Romano, Daniel Hofstetter, Matt McCluskey, Clarence Dunnrowicz, Mark Teepe, Rose Wood, Noble Johnson

Proceedings Volume 3625, (1999) https://doi.org/10.1117/12.356863

KEYWORDS: Semiconductor lasers, Quantum wells, Laser damage threshold, Mirrors, Continuous wave operation, Metalorganic chemical vapor deposition, Indium gallium nitride, Sapphire, Reflectivity, Coating

Proceedings Article | 4 May 1998 Paper

Measurement of the Q factor of semiconductor laser cavities by Fourier analysis of the emission spectrum

Daniel Hofstetter, Robert Thornton

Proceedings Volume 3285, (1998) https://doi.org/10.1117/12.307593

KEYWORDS: Fourier transforms, Semiconductor lasers, Laser resonators, Resonators, Fabry–Perot interferometers, Laser scattering, Mirrors, Absorption, Reflectivity, Scattering

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Proceedings Article | 2 September 1997 Paper

Physical and chemical sensing using monolithic semiconductor optical transducers

Hans Zappe, Daniel Hofstetter, Bernd Maisenhoelder, Michael Moser, Peter Riel, Rino Kunz

Proceedings Volume 3226, (1997) https://doi.org/10.1117/12.284563

KEYWORDS: Semiconductors, Transducers, Integrated optics, Biological and chemical sensing, Optical semiconductors, Sensors, System integration, Photonic integrated circuits, Electro optics, Michelson interferometers

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Proceedings Article | 11 April 1997 Paper

Optical displacement measurement using a monolithic Michelson interferometer

Daniel Hofstetter, Hans Zappe

Proceedings Volume 3008, (1997) https://doi.org/10.1117/12.271409

KEYWORDS: Interferometers, Distance measurement, Sensors, Mirrors, Michelson interferometers, Waveguides, Signal detection, Phase shifts, Optical testing, Integrated optics

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Proceedings Article | 10 January 1997 Paper

Visible laser diodes for printing

David Bour, Ross Bringans, Harlan Chung, David Treat, Werner Goetz, Daniel Hofstetter, Noble Johnson

Proceedings Volume 3000, (1997) https://doi.org/10.1117/12.263491

KEYWORDS: Quantum wells, Semiconductor lasers, Nonimpact printing, Light emitting diodes, Printing, Heterojunctions, Gallium nitride, Cladding, Indium gallium nitride, Optical pumping

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Proceedings Article | 10 January 1996 Paper

Monolithically integrated interferometer for optical displacement measurement

Daniel Hofstetter, Hans Zappe

Proceedings Volume 2695, (1996) https://doi.org/10.1117/12.229969

KEYWORDS: Waveguides, Interferometers, Mirrors, Integrated optics, Sensors, Photodetectors, Optical testing, Distance measurement, Semiconductor lasers, Michelson interferometers

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Proceedings Article | 28 July 1994 Paper

Quantum well engineering for semiconductor integrated optical sensors

Hans Zappe, Daniel Hofstetter, Hazel Arnot

Proceedings Volume 2213, (1994) https://doi.org/10.1117/12.180963

KEYWORDS: Quantum wells, Sensors, Waveguides, Absorption, Modulators, Integrated optics, Dielectrics, Semiconductors, Gallium arsenide, Optical semiconductors

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Showing 5 of 19 publications

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