Output characteristics of pulsed and continuous-wave-excited quantum-dot microcavity lasers.
Output characteristics of pulsed and continuous-wave-excited quantum-dot microcavity lasers.
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脉冲和连续波激发量子点微腔激光器的输出特性。
DOI：
10.1103/physrevlett.101.067401
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发表时间：
2008
影响因子：
8.6
通讯作者：
F. Jahnke
中科院分区：
文献类型：
--
作者：
C. Gies;J. Wiersig;F. Jahnke
在快速发展的量子点微腔激光器领域中，器件特性是非常重要的。在这封信中，我们研究了如何利用腔-量子点耦合系统的微观激光理论从输入/输出曲线中获得信息。半导体效应，如自发辐射的非线性源项，泡利阻塞，以及没有完全载流子反转，导致了与原子系统的显著偏离。特别是对于脉冲激励，饱和效应对输入/输出特性有很大的影响，使得自发辐射耦合β的简单确定变得不可能。
In the rapidly evolving field of quantum-dot-based microcavity lasers the device characterization is of great importance. In this Letter, we study how information can be obtained from the input/output curve by using a microscopic laser theory for the coupled cavity-quantum-dot system. Semiconductor effects such as a nonlinear source term of spontaneous emission, Pauli blocking, and the absence of complete carrier inversion lead to significant deviations from atomic systems. Especially for pulsed excitation, saturation effects have a tremendous impact on the input/output characteristics and render a simple determination of the spontaneous emission coupling beta impossible.