Limiting factors for high temperature operation of THz quantum cascade lasers

被引：26
|
作者：
Jirauschek, C. [1 ]
Lugli, P. [1 ]
机构：
[1] Tech Univ Munich, Inst Nanoelect, D-80333 Munich, Germany
来源：
PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 5, NO 1 | 2008年 / 5卷 / 01期
关键词：
D O I：
10.1002/pssc.200776566
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We theoretically investigate the temperature performance of GaAs-based resonant phonon depopulation THz quantum cascade lasers, using an ensemble Monte Carlo simulation which includes both carrier-carrier and carrier-phonon scattering. By evaluating the temperature dependence of the different carrier transport paths, we identify the factors restricting high temperature operation. As a major detrimental effect, a strongly increased occupation of the lower laser level is found due to a less efficient depletion at elevated temperatures, which can mainly be attributed to the resonant nature of the depletion process. (c) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：221 / 224
页数：4
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