Coherent Dynamics of Photoexcited Semiconductor Superlattices with Applied Homogeneous Electric Fields
Coherent Dynamics of Photoexcited Semiconductor Superlattices with Applied Homogeneous Electric Fields
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施加均匀电场的光激发半导体超晶格的相干动力学
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
S. Koch
中科院分区：
文献类型：
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作者：
T. Meier;P. Thomas;S. Koch
本章回顾了微观多体理论，该理论允许人们在生长方向施加均匀电场的情况下计算半导体超晶格的线性和非线性光学特性。该理论包括光激发过程、载流子之间的库仑相互作用、载流子-声子耦合以及电场引起的加速度。介绍并讨论了由直流和交流场引起的相干现象，例如布洛赫振荡和动态局域化。理论分析集中于线性和非线性光学实验中此类现象的特征和可观察性。
In this chapter a microscopic many-body theory is reviewed that allows one to compute the linear and nonlinear optical properties of semiconductor superlattices in the presence of homogeneous electric fields applied in the growth direction. The theory includes the process of optical excitation, the Coulomb interaction among the carriers, carrier-phonon coupling, and the acceleration induced by the electric field. Coherent phenomena induced by dc and ac fields, like Bloch oscillations and dynamical localization, are introduced and discussed. The theoretical analysis concentrates on the signatures and observability of such phenomena in linear and nonlinear optical experiments.