Thermal and Stark-Effect Roll-Over of Quantum-Cascade Lasers
Thermal and Stark-Effect Roll-Over of Quantum-Cascade Lasers
复制标题
量子级联激光器的热和斯塔克效应翻转
DOI：
10.1109/jqe.2007.912477
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发表时间：
2008
影响因子：
2.5
通讯作者：
C. Gmachl
中科院分区：
文献类型：
--
作者：
S. Howard;Zhijun Liu;C. Gmachl
对高性能λ ~ 8 μ m量子级联（QC）激光器中的翻滚问题进行了计算和实验分析。除了传统的热翻转，热翻转也是二极管激光器功率翻转的常见原因，“斯塔克效应”；观察到翻转。虽然这两种效应都可以发生在相同的QC激光器设计中，但热翻转和stark效应翻转分别是高温连续波操作、脉冲低温操作和低掺杂激光器的主要因素。此外，还讨论了井和屏障上方连续介质对这两种影响的作用。
A computational and experimental analysis of rollover in high-performance lambda ~ 8 mum quantum-cascade (QC) lasers is presented. In addition to conventional, thermal rollover, which is also a common cause of power rollover in diode lasers, ";Stark-effect"; rollover is observed. While both effects can occur in the same QC laser design, thermal and Stark-effect rollover are shown to be the dominating factor for high-temperature continuous wave operated, and pulsed low-temperature operated and low-doped lasers, respectively. Additionally, the role of the continuum above the wells and barriers is discussed for both effects.