His main research concerns Optoelectronics, Terahertz radiation, Optics, Laser and Far-infrared laser. Karl Unterrainer has included themes like Graphene, Bandwidth and Photomixing in his Optoelectronics study. The study incorporates disciplines such as Quasiparticle, Cascade, Lasing threshold, Magnetic field and Photoexcitation in addition to Terahertz radiation.
His studies deal with areas such as Coherence, Atomic physics and Electric field as well as Laser. The concepts of his Far-infrared laser study are interwoven with issues in Ultrashort pulse, Quantum cascade laser, Optical communication and Quantum dot laser. His Photodetector study deals with Nanoparticle intersecting with Photonics.
His primary areas of study are Optoelectronics, Terahertz radiation, Optics, Laser and Cascade. Karl Unterrainer interconnects Far-infrared laser, Quantum well and Photomixing in the investigation of issues within Optoelectronics. In his research, Molecular physics is intimately related to Condensed matter physics, which falls under the overarching field of Quantum well.
His Terahertz radiation research includes elements of Photonics, Spectroscopy, Plasmon and Semiconductor. His work carried out in the field of Laser brings together such families of science as Phonon and Atomic physics. His study in Cascade is interdisciplinary in nature, drawing from both Quantum and Scattering.
His primary areas of investigation include Optoelectronics, Terahertz radiation, Laser, Optics and Cascade. His work focuses on many connections between Optoelectronics and other disciplines, such as Frequency comb, that overlap with his field of interest in Continuous wave. Within one scientific family, Karl Unterrainer focuses on topics pertaining to Photomixing under Terahertz radiation, and may sometimes address concerns connected to Terahertz time-domain spectroscopy.
His Laser research is multidisciplinary, incorporating perspectives in Spectroscopy, Phonon and Bandwidth. His works in Far-infrared laser, Quantum dot laser, Resonator, Optical cavity and Tunable laser are all subjects of inquiry into Optics. His studies in Cascade integrate themes in fields like Waveguide, Spatial light modulator, Infrared and Thermoelectric cooling.
His primary scientific interests are in Laser, Terahertz radiation, Optoelectronics, Optics and Cascade. His Laser research includes themes of Atomic electron transition, Doping and Plasma. His Terahertz radiation research is multidisciplinary, relying on both Metamaterial, Molecular beam epitaxy, Frequency comb and Atomic physics.
His Optoelectronics research incorporates elements of Active laser medium, Laser power scaling and Phonon. His studies examine the connections between Optics and genetics, as well as such issues in Diode, with regards to Beam, Laser beam quality and Resonator. Karl Unterrainer has researched Cascade in several fields, including Waveguide, Quantum and Heterojunction.
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Microcavity-Integrated Graphene Photodetector
Marco Furchi;Alexander Urich;Andreas Pospischil;Govinda Lilley.
Nano Letters (2012)
Reversing the pump dependence of a laser at an exceptional point
M Brandstetter;M Liertzer;C Deutsch;P Klang.
Nature Communications (2014)
Quantum cascade lasers: ultrahigh-speed operation, optical wireless communication, narrow linewidth, and far-infrared emission
F. Capasso;R. Paiella;R. Martini;R. Colombelli.
IEEE Journal of Quantum Electronics (2002)
Intrinsic response time of graphene photodetectors.
Alexander Urich;Karl Unterrainer;Thomas F Mueller.
Nano Letters (2011)
Few-Cycle THz Emission from Cold Plasma Oscillations
R. Kersting;K. Unterrainer;G. Strasser;H. F. Kauffmann.
Physical Review Letters (1997)
Inverse Bloch oscillator: Strong terahertz-photocurrent resonances at the Bloch frequency.
K. Unterrainer;B. J. Keay;M. C. Wanke;S. J. Allen.
Physical Review Letters (1996)
Imaging with a Terahertz quantum cascade laser.
Juraj Darmo;Vincas Tamosiunas;Gernot Fasching;Josef Kröll.
Optics Express (2004)
Terahertz emission from GaAs and InAs in a magnetic field
James Heyman;P Neocleous;D Hebert;P.A. Crowell.
Physical Review B (2001)
Phase-resolved measurements of stimulated emission in a laser.
Josef Kröll;Juraj Darmo;Sukhdeep S. Dhillon;Sukhdeep S. Dhillon;Xavier Marcadet.
Terahertz phase modulator
R. Kersting;G. Strasser;K. Unterrainer.
Electronics Letters (2000)
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