Results 21 to 30 of about 15,014 (299)
Physics Today, 2014 This chapter describes the most commonly used approaches for computing the band structure of active materials with intersubband optical transitions. The physics of quantum cascade lasers (QCLs) is discussed in detail, including the mechanisms that limit the threshold current density, threshold voltage, wall-plug efficiency, and temperature sensitivity ...
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Temperature-Insensitive Imaging Properties of a Broadband Terahertz Nonlinear Quantum Cascade Laser
Applied Sciences, 2020 Terahertz (THz) quantum cascade laser sources based on optical nonlinearity are the only electrically pumped monolithic semiconductor sources operable at room temperature in the 0.6–6 THz range.
Atsushi Nakanishi +3 more
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THz QCL - Based active imaging applied to composite materials diagnostic [PDF]
, 2009 This paper is a presentation of the recently developed researches at OLIMPES laboratory in the field of active imaging using THz Quantum Cascade Laser applied to composite materials ...
Yoann Petitjean +9 more
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Mid-infrared quantum cascade laser arrays with electrical switching of emission frequencies
AIP Advances, 2018 We present a design of quantum cascade laser arrays made of ridge-waveguide devices in which the emission frequency can be electrically switched between several specified values.
Aiting Jiang +5 more
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Quantum Cascade Laser Frequency Combs
Nanophotonics, 2016 It was recently demonstrated that broadband quantum cascade lasers can operate as frequency combs. As such, they operate under direct electrical pumping at both mid-infrared and THz frequencies, making them very attractive for dual-comb spectroscopy ...
Faist Jérôme +6 more
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High Power Mid-Infrared Quantum Cascade Lasers Grown on GaAs
Photonics, 2022 The motivation behind this work is to show that InP-based intersubband lasers with high power can be realized on substrates with significant lattice mismatch.
Steven Slivken, Manijeh Razeghi
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Hydrodynamical model of QED cascade expansion in an extremely strong laser pulse
Matter and Radiation at Extremes, 2021 The development of a self-sustained quantum electrodynamical (QED) cascade in a single strong laser pulse is studied analytically and numerically. A hydrodynamical approach is used to construct an analytical model of cascade evolution, which includes the
A. S. Samsonov +2 more
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Monolithically Integrated Mid-Infrared Quantum Cascade Laser and Detector
Sensors, 2013 We demonstrate the monolithic integration of a mid-infrared laser and detector utilizing a bi-functional quantum cascade active region. When biased, this active region provides optical gain, while it can be used as a detector at zero bias. With our novel
Gottfried Strasser +6 more
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Фізика і хімія твердого тіла, 2016 Within the approximation of effective mass and rectangular potential barriers for the electron and using theobtained solutions of complete Schrodinger equation, the theory of dynamic conductivity for three-barrierresonant tunneling structure (InGaAs ...
Yu. O. Seti +2 more
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Sensors, 2016 We propose a self-consistent method for the analysis of granular materials at terahertz (THz) frequencies using a quantum cascade laser. The method is designed for signals acquired from a laser feedback interferometer, and applied to non-contact ...
She Han +12 more
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