Excitation dependences of gain and carrier-induced refractive index change in quantum-dot lasers
Excitation dependences of gain and carrier-induced refractive index change in quantum-dot lasers
复制标题
量子点激光器中增益和载流子引起的折射率变化的激发依赖性
DOI：
10.1063/1.2437670
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发表时间：
2007
影响因子：
4
通讯作者：
W. Chow
中科院分区：
文献类型：
--
作者：
M. Lorke;F. Jahnke;W. Chow
基于微观理论，研究了量子点活性介质中光增益和折射率变化与激发密度的关系。载流子-载流子库仑相互作用和载流子-声子相互作用是在量子动力学描述的水平上处理的。在较小的光增益范围内，α因子的值较小，而在增益饱和范围内，|α|急剧增加。
The excitation-density dependence of optical gain and refractive index changes in quantum-dot active media is investigated on the basis of a microscopic theory. Carrier-carrier Coulomb interaction and carrier-phonon interaction are treated on the level of a quantum-kinetic description. In the range of small optical gain the authors find small values of the α factor, while in the regime of gain saturation ∣α∣ increases drastically.