Results 71 to 80 of about 28,891 (190)
Monte Carlo study of carrier-light coupling in terahertz quantum cascade lasers
, 2010 We present a method for self-consistently including the optical cavity field into Monte Carlo-based carrier transport simulations. This approach allows for an analysis of the actual lasing operation in quantum cascade lasers, considering effects such as ...
Jirauschek, Christian
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Thermal analysis of mid-infrared quantum-cascade lasers [PDF]
, 2008 We present a theoretical thermal analysis of mid-infrared quantum-cascade lasers (QCLs) using a two-dimensional anisotropic heat diffusion model. Several InP-based devices are simulated over a range of operating conditions in order to extract temperature-
Evans, C.A. +3 more
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Quantum Transport Simulation of High-Power 4.6-μm Quantum Cascade Lasers
Photonics, 2016 We present a quantum transport simulation of a 4.6- μ m quantum cascade laser (QCL) operating at high power near room temperature. The simulation is based on a rigorous density-matrix-based formalism, in which the evolution of the single-electron ...
Olafur Jonasson +6 more
doaj +1 more source
Electron temperature and mechanisms of hot carrier generation in quantum cascade lasers [PDF]
, 2002 A technique for calculating the temperature of the nonequilibrium electron distribution functions in general quantum well intersubband devices is presented.
Harrison, P., Indjin, D., Kelsall, R.W.
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Microring quantum cascade surface emitting lasers
APL PhotonicsWe miniaturize a vertically coupled in-plane whispering gallery mode cavity incorporating a quantum cascade gain medium, aiming to realize the mid-infrared counterpart to the vertical cavity surface emitting laser.
David Stark +2 more
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Multi-Spectral Quantum Cascade Lasers on Silicon With Integrated Multiplexers
Photonics, 2019 Multi-spectral midwave-infrared (mid-IR) lasers are demonstrated by directly bonding quantum cascade epitaxial gain layers to silicon-on-insulator (SOI) waveguides with arrayed waveguide grating (AWG) multiplexers.
Eric J. Stanton +11 more
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Tree array quantum cascade laser
Optics Express, 2009 A monolithic coupling scheme for mid-infrared quantum cascade laser arrays is investigated with respect to brightness enhancement. The tree-shaped resonator enables parallel coupling of six laser elements into a single element by means of several Y-junctions.
Leonard K, Hoffmann +6 more
openaire +2 more sources
High-Power Directional Emission from Microlasers with Chaotic Resonators
, 1998 High-power and highly directional semiconductor cylinder-lasers based on an optical resonator with deformed cross section are reported. In the favorable directions of the far-field, a power increase of up to three orders of magnitude over the ...
Capasso, Federico +7 more
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High temperature operation of short wavelength InAs-based quantum cascade lasers
AIP Advances, 2012 InAs/AlSb quantum cascade lasers emitting at 3.06 and 3.22 μm at room temperature has been studied. The lasers with high reflection coating on back facets operated in pulse mode up to 400 and 423 K, respectively.
P. Laffaille +4 more
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Quantum dot cascade laser: Arguments in favor
, 2007 Quantum cascade lasers are recognized as propitious candidates for future terahertz optoelectronics. Here we demonstrate several definite advantages of quantum dot cascade structures over quantum well devices, which suffer fundamental performance ...
Dmitriev +11 more
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