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Terahertz Quantum Cascade Lasers

Asia Optical Fiber Communication and Optoelectronic Exposition and Conference, 2007
Six years after their birth, terahertz quantum-cascade lasers can now deliver milliwatts or more of continuous-wave coherent radiation throughout the terahertz range — the spectral regime between millimetre and infrared wavelengths, which has long resisted development.
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Quantum-Cascade Lasers

Chemical & Engineering News Archive, 2010
In this chapter we shall discuss basic features of quantum-cascade coherent-light sources; to this aim we shall review a few simulated experiments focusing on the microscopic explanation of the gain regime, both in the mid-infrared and in the far-infrared spectral regions.
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Cascaded-transition Quantum Cascade laser

2012 Lester Eastman Conference on High Performance Devices (LEC), 2012
The Quantum Cascade (QC) laser is a semiconductor laser based on intersubband transitions in the conduction band of a multiple quantum-well heterostructure, and is a highperformance light source in the mid-infrared and terahertz region. With the aim of improving the quantum efficiency and power efficiency of long-wavelength QC lasers, based on the ...
Jingyuan Linda Zhang, Xue Huang, Claire F. Gmachl, Vadim Tokranov, Serge Oktyabrsky   +4 more
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Microcavity-Stabilized Quantum Cascade Laser

Conference on Lasers and Electro-Optics, 2016
A CaF2 whispering gallery mode microresonator is used for frequency stabilization and linewidth narrowing of a mid-IR quantum cascade laser. Sub-Doppler recording of a CO2 transition demonstrates the suitability of the system for high-resolution spectroscopy.
Borri Simone, De Cumis Mario Siciliani, Insero Giacomo, Bartalini Saverio, Pastor Pablo Cancio, Mazzotti Davide, Galli Iacopo, Giusfredi Giovanni, Santambrogio Gabriele, D'Ambrosio Davide, Savchenkov Anatoliy, Eliyahu Danny, Ilchenko Vladimir, Akikusa Naota, Matsko Andrey, Maleki Lute, De Natale Paolo   +16 more
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Quantum Cascade Lasers

2013
THz sources are the fundamental requirement for THz technology even for passive detection systems where sources are required for heterodyne detection to improve detectivity. A review is given for one such THz source, the quantum cascade laser. Quantum cascade lasers are unipolar, intersubband photon emitters that can be tuned through the width of ...
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SILICON-GERMANIUM QUANTUM-CASCADE LASERS

International Journal of High Speed Electronics and Systems, 2003
The prospects and advantages of silicon germanium quantum cascade lasers are discussed, from both physical and technological perspectives. A range of Si/SiGe intersubband laser configurations are discussed, for both edge and surface emission. Recent experimental activity on mid- and far-infrared devices is reviewed, and the value of detailed ...
Robert W. Kelsall, Richard A. Soref
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Microcavity‐Stabilized Quantum Cascade Laser

Laser & Photonics Reviews, 2015
Narrow‐linewidth lasers are key elements in optical metrology and spectroscopy. Spectral purity of these lasers determines accuracy of the measurements and quality of collected data. Solid state and fiber lasers are stabilized to relatively large and complex external optical cavities or narrow atomic and molecular transitions to improve their spectral ...
Siciliani de Cumis Mario, Borri Simone, Insero Giacomo, Galli Iacopo, Savchenkov Anatoliy, Eliyahu Danny, Ilchenko Vladimir, Akikusa Naota, Matsko Andrey, Maleki Lute, De Natale Paolo   +10 more
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Tapered Quantum Cascade Lasers

2007 International Nano-Optoelectronics Workshop, 2007
Quantum cascade lasers with tapered gain sections have been fabricated. The devices show good room temperature performance with an output-power > 100 mW and a very narrow horizontal farfield with a beam divergence of 9deg.
J. Semmel, L. Nahle, S. Hofling, A. Forchel   +3 more
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Supercontinuum quantum cascade laser

Summaries of Papers Presented at the Lasers and Electro-Optics. CLEO '02. Technical Diges, 2003
Summary form only given. The design rule for supercontinuum generation can be deduced in a rigorous way; however, the family of solutions is rather large owing to the high number of free parameters. We put constraints into our model, which ultimately leads to a design rule stating the peak wavelength of each active region as a function of its position ...
C. Gmachl, D.L. Sivco, R. Colombelli, F. Capasso, A.Y. Cho   +4 more
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Terahertz quantum cascade lasers

The 16th Annual Meeting of the IEEE Lasers and Electro-Optics Society, 2003. LEOS 2003., 2004
We report our successful development of THz quantum cascade lasers with two unique features. The intersubband gain medium is based on resonant optical phonon scattering to depopulate the lower lasing level, and the THz mode confinement is achieved using a metal-semiconductor-metal waveguide.
null Qing Hu, B.S. Williams, S. Kumar, H. Callebaut, J.L. Reno   +4 more
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