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Mid-Infrared Quantum-Dot Quantum Cascade Laser: A Theoretical Feasibility Study
Photonics, 2016 In the framework of a microscopic model for intersubband gain from electrically pumped quantum-dot structures we investigate electrically pumped quantum-dots as active material for a mid-infrared quantum cascade laser.
Stephan Michael +2 more
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Electron transport and terahertz gain in quantum-dot cascades [PDF]
, 2008 Electron transport through quantum-dot (QD) cascades was investigated using the formalism of nonequilibrium Green's functions within the self-consistent Born approximation.
Harrison, P. +3 more
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Selection of longitudinal modes in a terahertz quantum cascade laser via narrow-band injection seeding [PDF]
, 2015 A terahertz quantum cascade laser is injection seeded with narrow-band seed pulses generated from a periodically poled lithium niobate crystal.
Davies, AG +11 more
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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 ...
openaire +1 more source
Estimating optical feedback from a chalcogenide fiber in mid-infrared quantum cascade lasers
AIP Advances, 2016 The amount of optical feedback originating from a chalcogenide fiber used to couple light from a mid-infrared quantum cascade laser is evaluated experimentally. Threshold reduction measurements on the fibered laser, combined with an analytical study of a
L. Jumpertz +8 more
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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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Gain and Loss in Quantum Cascade Lasers [PDF]
, 2001 We report gain calculations for a quantum cascade laser using a fully self-consistent quantum mechanical approach based on the theory of nonequilibrium Green functions. Both the absolute value of the gain as well as the spectral position at threshold are
A. Wacker +13 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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Terahertz Quantum Cascade Lasers - The Past, Present, and Potential Future [PDF]
, 2015 Since their first demonstration in 2002, the development of terahertz frequency quantum cascade lasers has been extremely rapid. We overview some of the advances that have taken place and which have made the terahertz quantum cascade laser such a ...
Davies, AG, Dean, P, Linfield, EH
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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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