Results 31 to 40 of about 28,891 (190)
Optical information processing using dual state quantum dot lasers: complexity through simplicity
Light: Science & Applications, 2021 We review results on the optical injection of dual state InAs quantum dot-based semiconductor lasers. The two states in question are the so-called ground state and first excited state of the laser. This ability to lase from two different energy states is
Bryan Kelleher +2 more
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Towards automated design of quantum cascade lasers [PDF]
, 2005 We present an advanced technique for the design and optimization of GaAs/AlGaAs quantum cascade laser structures. It is based on the implementation of the simulated annealing algorithm with the purpose of determining a set of design parameters that ...
Aleksandra Mirčetić +8 more
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Sequential resonant tunneling in quantum cascade lasers [PDF]
, 2008 A model of sequential resonant tunneling transport between two-dimensional subbands that takes into account explicitly elastic scattering is investigated.
Andreas Wittmann +4 more
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Quantum Cascade Laser Absorption Spectroscopy as a Plasma Diagnostic Tool: An Overview
Sensors, 2010 The recent availability of thermoelectrically cooled pulsed and continuous wave quantum and inter-band cascade lasers in the mid-infrared spectral region has led to significant improvements and new developments in chemical sensing techniques using in ...
Jürgen Röpcke +5 more
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Efficient dielectric metasurface collimating lenses for mid-infrared quantum cascade lasers [PDF]
, 2015 Light emitted from single-mode semiconductor lasers generally has large divergence angles, and high numerical aperture lenses are required for beam collimation.
Arbabi, Amir +4 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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Nanotechnology Reviews, 2016 The inner workings of semiconductor electronic and photonic devices, such as dopants, free charge carriers, electric potential, and electric field, are playing a crucial role in the function and performance of the devices.
Ban Dayan +7 more
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Thermoelectric Effect in Quantum Cascade Lasers
IEEE Photonics Journal, 2010 The choice of polarity of operation in a quantum cascade (QC) laser is made at the beginning of every QC laser design and growth, yet little work has been done to ascertain any performance benefits of one polarity versus the other.
Matthew D. Escarra +6 more
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On the Nature of Charge Transport in Quantum-Cascade Lasers
, 2001 The first global quantum simulation of semiconductor-based quantum-cascade lasers is presented. Our three-dimensional approach allows to study in a purely microscopic way the current-voltage characteristics of state-of-the-art unipolar nanostructures ...
Iotti, Rita Claudia, Rossi, Fausto
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Dynamic modeling of Terahertz Quantum cascade lasers [PDF]
, 2011 In this paper, the influence of the simplifications made in the four-equation-based set of rate equations describing the dynamic behavior of a Quantum Cascade Laser (QCL) is studied.
Destic, Fabien +3 more
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