Prof. Wolfgang E. Elsässer Profile

Prof. Wolfgang E. Elsässer

University Professor at Technische Univ Darmstadt

SPIE Involvement:

Author

Publications (33)

Proceedings Article | 5 March 2021 Presentation + Paper

Ghost polarization communication

Wolfgang Elsäßer, Markus Rosskopf, Till Mohr

Proceedings Volume 11680, 1168007 (2021) https://doi.org/10.1117/12.2583693

KEYWORDS: Polarization, Imaging spectroscopy, Ultrafast phenomena, Spectroscopy, Quantum cryptography, Quantum chaos, Poincaré sphere, Photon polarization, Photomultipliers, Fiber amplifiers

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SPIE Journal Paper | 21 October 2020 Open Access

Extreme events in quantum cascade lasers

Olivier Spitz, Jiagui Wu, Andreas Herdt, Grégory Maisons, Mathieu Carras, Wolfgang Elsäßer, Chee-Wei Wong, Frédéric Grillot

AP, Vol. 2, Issue 06, 066001, (October 2020) https://doi.org/10.1117/12.10.1117/1.AP.2.6.066001

KEYWORDS: Quantum cascade lasers, Modulation, Semiconductor lasers, Neurons, Photonics, Vertical cavity surface emitting lasers, Mid-IR, Chaos, Superposition, Laser damage threshold

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Proceedings Article | 3 February 2020 Presentation + Paper

Peculiarities and predictions of rogue waves in mid-infrared quantum cascade lasers under conventional optical feedback

O. Spitz, A. Herdt, J. Wu, G. Maisons, M. Carras, C.-W. Wong, W. Elsäßer, F. Grillot

Proceedings Volume 11288, 112880A (2020) https://doi.org/10.1117/12.2545217

KEYWORDS: Quantum cascade lasers, Semiconductor lasers, Mid-IR, Laser optics, Nonlinear optics, Free space optics, Telecommunications

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Proceedings Article | 31 January 2020 Paper

Towards private optical communications with mid infrared chaotic light

F. Grillot, O. Spitz, A. Herdt, W. Elsäßer, M. Carras

Proceedings Volume 11288, 112881P (2020) https://doi.org/10.1117/12.2546582

KEYWORDS: Quantum cascade lasers, Chaos, Semiconductor lasers, Free space optics, Mid-IR, Laser optics, Optical communications, Sensors, Free space optical communications, Signal detection

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Proceedings Article | 21 February 2019 Presentation + Paper

Extensive study of the linewidth enhancement factor of a distributed feedback quantum cascade laser at ultra-low temperature

O. Spitz, A. Herdt, J. Duan, M. Carras, W. Elsässer, F. Grillot

Proceedings Volume 10926, 1092619 (2019) https://doi.org/10.1117/12.2510502

KEYWORDS: Quantum cascade lasers, Interferometry, Semiconductor lasers, Mid-IR, Nonlinear optics, Feedback

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Proceedings Article | 9 May 2018 Presentation + Paper

Theory of delay-coupled nonidentical quantum cascade lasers

Andreas Herdt, Markus Weidmann, Till Mohr, Daan Lenstra, Wolfgang Elsäßer

Proceedings Volume 10682, 106820H (2018) https://doi.org/10.1117/12.2305907

KEYWORDS: Quantum cascade lasers, Picosecond phenomena, Semiconductor lasers, Oscillators, Complex systems, Nonlinear dynamics

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Proceedings Article | 3 November 2016 Presentation

Nonequilibrium Green's functions theory for the alpha factor of quantum cascade lasers (Conference Presentation)

Mauro Pereira, David Winge, Andreas Wacker, Louise Jumpertz, Florian Michel, Robert Pawlus, Wolfgang Elsaesser, Kevin Schires, Mathieu Carras, Frédéric Grillot

Proceedings Volume 9934, 993408 (2016) https://doi.org/10.1117/12.2238619

KEYWORDS: Quantum cascade lasers, Semiconductor lasers, Refractive index, Quantum physics, Semiconductor physics, Semiconductors, Physics, System on a chip, Americium, Receivers

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Proceedings Article | 28 April 2016 Paper

Investigations on the relative intensity noise of a two-state quantum dot laser

R. Pawlus, M. Gioannini, M. Virte, W. Elsäßer, S. Breuer

Proceedings Volume 9892, 98920U (2016) https://doi.org/10.1117/12.2229003

KEYWORDS: Quantum dot lasers, Semiconductor lasers, Laser optics, Quantum optics, Optical simulations, Diodes, Active optics, Quantum dots, Fluctuations and noise, Relative intensity noise, Beam splitters, Neodymium, Laser stabilization, Collimation, Electroluminescent displays, Laser damage threshold

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Proceedings Article | 28 April 2016 Paper

Range-dependent effects of optical feedback on multimode two-color quantum dot lasers

Martin Virte, Robert Pawlus, Wolfgang Elsäßer, Krassimir Panajotov, Marc Sciamanna, Stefan Breuer

Proceedings Volume 9892, 98920W (2016) https://doi.org/10.1117/12.2227086

KEYWORDS: Quantum dot lasers, Semiconductor lasers, Switching, Nonlinear dynamics, Optical switching, Semiconductor lasers, Beam splitters, Electrons, Photonics, Applied physics, Control systems

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Proceedings Article | 13 February 2016 Paper

Linewidth broadening factor and gain compression in quantum cascade lasers

Louise Jumpertz, Florian Michel, Robert Pawlus, Wolfgang Elsässer, Mathieu Carras, Kevin Schires, Frédéric Grillot

Proceedings Volume 9755, 97550F (2016) https://doi.org/10.1117/12.2212624

KEYWORDS: Quantum cascade lasers, Semiconductor lasers, Mid-IR, Interferometry, FT-IR spectroscopy, Electroluminescent displays, Modulation

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Proceedings Article | 10 March 2015 Paper

Experimental investigation of intensity noise in injection locked mid-infrared quantum cascade lasers

A. Bogris, Carsten Juretzka, H. Simos, D. Syvridis, E. Roditi, W. Elsäßer, M. Carras

Proceedings Volume 9382, 938210 (2015) https://doi.org/10.1117/12.2079462

KEYWORDS: Quantum cascade lasers, Laser damage threshold, Optical isolators, Mid-IR, Denoising, Numerical simulations, Absorption, Tunable lasers, Signal to noise ratio, Laser resonators

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Proceedings Article | 11 May 2012 Paper

Intra-cavity absorber photocurrent characteristics of a quantum dot laser emitting on two emission-states: experiment and simulation

Stefan Breuer, Mattia Rossetti, Lukas Drzewietzki, Ivo Montrosset, Mark Hopkinson, Wolfgang Elsässer

Proceedings Volume 8432, 84320H (2012) https://doi.org/10.1117/12.927081

KEYWORDS: Quantum dot lasers, Quantum dots, Optical simulations, Resistance, Resistors, Photodiodes, Semiconductor lasers, Absorption, Reverse modeling, Pulsed laser operation

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Proceedings Article | 28 April 2010 Paper

Reverse ground-state excited-state transition dynamics in two-section quantum dot semiconductor lasers: mode-locking and state-switching

Stefan Breuer, Mattia Rossetti, Wolfgang Elsässer, Lukas Drzewietzki, Paolo Bardella, Ivo Montrosset, Michel Krakowski, Mark Hopkinson

Proceedings Volume 7720, 772011 (2010) https://doi.org/10.1117/12.854418

KEYWORDS: Resistors, Mode locking, Semiconductor lasers, Picosecond phenomena, Reverse modeling, Optical simulations, Pulsed laser operation, Resistance, Quantum dots, Quantum wells

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Proceedings Article | 19 May 2008 Paper

Comprehensive RF-domain spectral- and time-domain analysis of passively mode-locked two-section quantum-dot lasers emitting at 1.3 um

Stefan Breuer, Lukas Drzewietzki, Wolfgang Elsäßer, Mark Hopkinson, Michel Calligaro, Michel Krakowski

Proceedings Volume 6997, 69970V (2008) https://doi.org/10.1117/12.782871

KEYWORDS: Mode locking, Radio optics, Picosecond phenomena, Spectrum analysis, Semiconductor lasers, Single sideband modulation, Second-harmonic generation, Pulsed laser operation, Signal to noise ratio, Laser applications

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Proceedings Article | 13 June 2007 Paper

Intensity noise of ultrabroadband quantum dot light emitting diodes and lasers at 1.3µm

M. Blazek, S. Breuer, T. Gensty, W. Elsäßer, M. Hopkinson, K. Groom, M. Calligaro, P. Resneau, M. Krakowski

Proceedings Volume 6603, 66031Y (2007) https://doi.org/10.1117/12.724545

KEYWORDS: Signal to noise ratio, Laser damage threshold, Light sources, Optical filters, Light emitting diodes, Semiconductor lasers, Quantum dots, Quantum dot light emitting diodes, Precision measurement, Resonators

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Proceedings Article | 14 April 2006 Paper

Measurement of the linewidth enhancement factor of quantum cascade lasers by the self-mixing technique

Jens von Staden, Tobias Gensty, Michael Peil, Wolfgang Elsäßer, Guido Giuliani, Christian Mann

Proceedings Volume 6184, 61841E (2006) https://doi.org/10.1117/12.662986

KEYWORDS: Quantum cascade lasers, Semiconductor lasers, Signal detection, Laser damage threshold, Sensors, Photodetectors, Interferometry, Electrons, Laser optics, Optical amplifiers

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Proceedings Article | 14 April 2006 Paper

Measurement of linewidth enhancement factor of different semiconductor lasers in operating conditions

Guido Giuliani, Silvano Donati, Wolfgang Elsässer

Proceedings Volume 6184, 61841D (2006) https://doi.org/10.1117/12.665178

KEYWORDS: Interferometry, Semiconductor lasers, Phase measurement, Stereolithography, Vertical cavity surface emitting lasers, Quantum cascade lasers, Mirrors, Laser sintering, Laser damage threshold, Laser optics

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Proceedings Article | 14 April 2006 Paper

Nonmodal emission characteristics of broad-area vertical-cavity surface-emitting lasers

Michael Peeters, Guy Verschaffelt, Ingo Fischer, Shyam Mandre, Wolfgang Elsäßer, Jan Danckaert, Hugo Thienpont

Proceedings Volume 6184, 61840Z (2006) https://doi.org/10.1117/12.662012

KEYWORDS: Near field, Vertical cavity surface emitting lasers, Spatial coherence, Visibility, Pulsed laser operation, Continuous wave operation, Fourier transforms, Solids, Near field optics, Thermal effects

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Proceedings Article | 12 October 2005 Paper

System performance of a modern hollow-core optical fiber coupled to a quantum cascade laser: transmission efficiency and relative intensity noise

Tobias Gensty, Jens von Staden, Wolfgang Elsäßer, Sven Höfling, Johann Reithmaier, Alfred Forchel

Proceedings Volume 5958, 595804 (2005) https://doi.org/10.1117/12.622264

KEYWORDS: Optical fibers, Quantum cascade lasers, Pulsed laser operation, Signal detection, Spectroscopy, Mirrors, Mid-IR, Semiconductor lasers, Quantum efficiency, Photons

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Proceedings Article | 1 September 2004 Paper

Spatio-temporal emission dynamics of VCSELs: modal competition in the turn-on behavior

Klaus Becker, Ingo Fischer, Wolfgang ElsaBer

Proceedings Volume 5452, (2004) https://doi.org/10.1117/12.545883

KEYWORDS: Polarization, Vertical cavity surface emitting lasers, Near field, Picosecond phenomena, Near field optics, Temporal resolution, Cameras, Image processing, Semiconductor lasers, CCD cameras

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Proceedings Article | 1 September 2004 Paper

Dynamical scenarios of mutually delay-coupled semiconductor lasers in the short coupling regime

Eric Wille, Michael Peil, Ingo Fischer, Wolfgang Elsaber

Proceedings Volume 5452, (2004) https://doi.org/10.1117/12.545414

KEYWORDS: Stereolithography, Semiconductor lasers, Phase shifts, Laser systems engineering, Oscillators, Avalanche photodetectors, Amplifiers, Spectrum analysis, Oscilloscopes, Systems modeling

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Proceedings Article | 1 September 2004 Paper

Quantum noise and spatial emission properties of RCLEDs

Richard Birkner, Joachim Kaiser, Wolfgang ElsaBer, Christian Jung

Proceedings Volume 5452, (2004) https://doi.org/10.1117/12.545837

KEYWORDS: Light emitting diodes, Quantum wells, Semiconductor lasers, Vertical cavity surface emitting lasers, Quantum efficiency, Semiconductors, Quantum optics, Laser marking, Temperature metrology, Optical amplifiers

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Proceedings Article | 25 May 2004 Paper

Investigations on the generation of light with sub-shot intensity noise with quantum cascade lasers

Tobias Gensty, Jens von Staden, Wolfgang Elsaesser

Proceedings Volume 5468, (2004) https://doi.org/10.1117/12.546953

KEYWORDS: Quantum cascade lasers, Vertical cavity surface emitting lasers, Semiconductor lasers, Sensors, Signal detection, Continuous wave operation, Mid-IR, Laser damage threshold, Interference (communication), Calibration

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Proceedings Article | 14 July 2000 Paper

Dynamics of DFB lasers subject to optical feedback: stability properties of the stable modes

Tilmann Heil, Ingo Fischer, Wolfgang Elsaesser

Proceedings Volume 3944, (2000) https://doi.org/10.1117/12.391457

KEYWORDS: Modulation, Laser optics, Semiconductor lasers, Interference (communication), Laser stabilization, Phase shift keying, Solids, Modes of laser operation, Laser applications, Laser damage threshold

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Proceedings Article | 6 August 1999 Paper

Statistical studies of semiconductor lasers with delayed optical feedback

David Sukow, Tilmann Heil, Ingo Fischer, Athanasios Gavrielides, Angela Hohl-AbiChedid, Wolfgang Elsaesser

Proceedings Volume 3625, (1999) https://doi.org/10.1117/12.356926

KEYWORDS: Semiconductor lasers, Streak cameras, Laser optics, Picosecond phenomena, Laser damage threshold, Oscilloscopes, Fabry–Perot interferometers, Mirrors, Beam splitters, Photodetectors

Proceedings Article | 8 October 1998 Paper

Generation of intensity squeezed light with VCSELs: theory and experiment

Wolfgang Elsaesser, Jean-Luc Vey, Karsten Auen, C. Degen

Proceedings Volume 3415, (1998) https://doi.org/10.1117/12.326624

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Proceedings Article | 8 October 1998 Paper

Temperature dependence of self-pulsation in narrow-stripe gain-guided compact disk laser diodes

Stephen Lynch, Paul McEvoy, Pascal Landais, James O'Gorman, John Hegarty, Wolfgang Elsaesser

Proceedings Volume 3415, (1998) https://doi.org/10.1117/12.326618

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Proceedings Article | 7 July 1998 Paper

Mechanism of the LFF phenomenon in the coherence collapse of semiconductor lasers: there is hope for Sisyphus!

Ingo Fischer, Tilmann Heil, M. Muenkel, Wolfgang Elsaesser

Proceedings Volume 3283, (1998) https://doi.org/10.1117/12.316708

KEYWORDS: Semiconductor lasers, Picosecond phenomena, Laser optics, Streak cameras, Fabry–Perot interferometers, Diodes, Laser damage threshold, Mirrors, Oscilloscopes, Interferometers

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Proceedings Article | 6 June 1997 Paper

Spatiotemporal dynamics in the near field of a 980-nm ridge waveguide pump laser diode

Markus Ziegler, E. Miltenyi, M. Muenkel, J. Greif, G. Jennemann, Ingo Fischer, Harry Asonen, Wolfgang Elsaesser

Proceedings Volume 2994, (1997) https://doi.org/10.1117/12.275608

KEYWORDS: Near field, Semiconductor lasers, Switching, Waveguides, Waveguide lasers, High power lasers, Picosecond phenomena, Laser applications, Optical pumping, Fiber amplifiers

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Proceedings Article | 6 June 1997 Paper

Semiclassical analysis and experimental investigations of vertical-cavity surface-emitting laser noise

Jean-Luc Vey, Karsten Auen, Wolfgang Elsaesser

Proceedings Volume 2994, (1997) https://doi.org/10.1117/12.275560

KEYWORDS: Vertical cavity surface emitting lasers, Polarization, Semiconductor lasers, Reflectors, Hole burning spectroscopy, Fabry–Perot interferometers, Laser damage threshold, Performance modeling, Laser applications, Laser resonators

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Proceedings Article | 30 June 1994 Paper

Picosecond gain dynamics of an actively mode-locked external cavity laser diode

Martin Hofmann, M. Koch, H.-J. Heinrich, Gerhard Weiser, Jochen Feldmann, Wolfgang Elsaesser, Ernst Goebel, Stephan Koch, Weng Chow

Proceedings Volume 2146, (1994) https://doi.org/10.1117/12.178516

KEYWORDS: Semiconductor lasers, Modulation, Mode locking, Picosecond phenomena, Sapphire lasers, Diodes, Optical pumping, Streak cameras, Laser beam diagnostics, Temporal resolution

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Proceedings Article | 26 May 1994 Paper

Nonlinear optical phenomena in semiconductor lasers and amplifiers: physics and applications

Wolfgang Elsaesser

Proceedings Volume 2141, (1994) https://doi.org/10.1117/12.176850

KEYWORDS: Semiconductor lasers, Optical amplifiers, Semiconductors, Nonlinear optics, Four wave mixing, Signal processing, Modulation, Ultrafast phenomena, Polarization, Physics

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Proceedings Article | 1 February 1991 Paper

Novel device for short-pulse generation using optoelectronic feedback

Paul Phelan, John Hegarty, Wolfgang Elsaesser

Proceedings Volume 1362, (1991) https://doi.org/10.1117/12.24569

KEYWORDS: Avalanche photodetectors, Optoelectronic devices, Semiconductor lasers, Optical amplifiers, Picosecond phenomena, Optoelectronics, Signal detection, Avalanche photodiodes, Modulation, Physics

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