Phonon-induced dephasing of localized optical excitations.
Phonon-induced dephasing of localized optical excitations.
复制标题
DOI：
10.1103/physrevb.54.2561
复制
发表时间：
1996-07
期刊：
影响因子：
--
通讯作者：
D. Brinkmann;Fausto Rossi;Stephan W Koch;Peter Thomas
中科院分区：
文献类型：
--
作者：
D. Brinkmann;Fausto Rossi;Stephan W Koch;Peter Thomas
本文研究了半导体中强局域光激发的动力学，包括电子-声子相互作用。带间偏振和载流子分布函数的耦合微观运动方程包含相干和非相干的贡献。而相干部分是通过直接数值积分解决的，非相干的是通过广义蒙特卡罗模拟处理。一个简单的模型系统的方法进行了说明。分析了光学退相速率与温度和激发能量的关系，并与其它方法的结果进行了比较
The dynamics of strongly localized optical excitations in semiconductors is studied including electron-phonon interaction. The coupled microscopic equations of motion for the interband polarization and the carrier distribution functions contain coherent and incoherent contributions. While the coherent part is solved through direct numerical integration, the incoherent one is treated by means of a generalized Monte Carlo simulation. The approach is illustrated for a simple model system. The temperature and excitation energy dependence of the optical dephasing rate is analyzed and the results are compared to those of alternative approaches