High-power room temperature emission quantum cascade lasers at /spl lambda/=9 /spl mu/m
نویسندگان
چکیده
منابع مشابه
Temperature Effect on THz Quantum Cascade Lasers
A simple semi-phenomenological model, which accurately predicts the dependence of thresholdcurrent for temperature of Resonant-phonon three well quantum cascade laser based on verticaltransitions is offered. We found that, the longitude optical phonon scattering of thermally excitedelectrons is the most important limiting factor for thermal performance of high frequency THz QCLs.In low frequenc...
متن کامل“High-temperature and high-power THz quantum cascade lasers”
The highest temperature performance in terahertz QCLs has been demonstrated by using active regions based on the resonant-phonon depopulation scheme along with metalmetal waveguides to provide low-loss confinement, which have been used to demonstrate maximum temperatures of 164 K in pulsed mode and 117 K in cw mode. It is expected that there are two primary mechanisms which reduce the populatio...
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The development of quantum-cascade lasers (QCLs) at 2.1 THz (l’ 141 mm), which is the longest wavelength QCL to date without the assistance of magnetic fields, is reported. This laser uses a structure based on resonant-phonon depopulation, and a metal–metal waveguide to obtain high modal confinement with low waveguide losses. Lasing was observed up to a heatsink temperature of 72 K in pulsed mo...
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Introduction: Quantum cascade (QC) lasers are very important optical sources that can cover the whole mid-infrared range (3–15 mm) for gas sensing, industrial process monitoring, and military applications [1]. They have become even more interesting for commercial applications in recent years because of their successful growth by metal organic vapour phase epitaxy (MOVPE) [2–6] technology, which...
متن کاملtemperature effect on thz quantum cascade lasers
a simple semi-phenomenological model, which accurately predicts the dependence of thresholdcurrent for temperature of resonant-phonon three well quantum cascade laser based on verticaltransitions is offered. we found that, the longitude optical phonon scattering of thermally excitedelectrons is the most important limiting factor for thermal performance of high frequency thz qcls.in low frequenc...
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ژورنال
عنوان ژورنال: IEEE Journal of Quantum Electronics
سال: 2005
ISSN: 0018-9197
DOI: 10.1109/jqe.2005.858797