Mechanism of all-optical spin-dependent polarization switching in Bragg-spaced quantum wells
Mechanism of all-optical spin-dependent polarization switching in Bragg-spaced quantum wells
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DOI：
10.1063/1.2735673
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发表时间：
2007-05
影响因子：
4
通讯作者：
D. Nguyen;N. Kwong;Zhenshan Yang;R. Binder;A. Smirl
中科院分区：
文献类型：
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作者：
D. Nguyen;N. Kwong;Zhenshan Yang;R. Binder;A. Smirl
作者概述了bragg间隔量子阱（BSQWs）光响应中泵浦诱导各向异性的微观理论。他们的理论解释了泵浦通过量子阱中激子之间的微观相互作用来操纵bsqw的能带结构。他们运用他们的理论来理解在BSQW结构上实现的全光偏振开关的机制。他们追踪了强自旋依赖激子-激子相互作用与开关信号之间的关系。他们的理论结果与实验数据吻合得相当好。
The authors outline a microscopic theory of pump-induced anisotropy in the optical response of Bragg-spaced quantum wells (BSQWs). Their theory explains the manipulation of the band structure of the BSQWs by the pump through the microscopic interactions between excitons in the quantum wells. They apply their theory to understand the mechanism of an all-optical polarization switch implemented on a BSQW structure. They trace the relation between the strongly spin-dependent exciton-exciton interactions and the switching signal. Reasonably good agreement is found between their theoretical results and experimental data.