Quantum dot polarized light sources
Quantum dot polarized light sources
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量子点偏振光源
DOI：
10.1088/0268-1242/26/1/014002
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发表时间：
2010
影响因子：
1.9
通讯作者：
D. Saha
中科院分区：
文献类型：
--
作者：
P. Bhattacharya;D. Basu;Ayan Das;D. Saha
介绍和讨论了量子点自旋极化垂直腔面发射激光器和单光子源的设计、工作和性能。研究了自旋极化VCSEL中自旋诱导增益各向异性对输出极化和阈值电流减小的影响以及高频响应。而自旋极化单光子源的输出极化表现出一种开关行为，这可以通过调用量子点中的激子精细结构和由于量子点内旋转不对称导致的电子-空穴交换分裂效应来解释。
The design, operation and performance of quantum dot spin-polarized vertical cavity surface emitting lasers (VCSELs) and single-photon sources are described and discussed. The effects of spin-induced gain anisotropy on output polarization and threshold current reduction have been studied along with the high-frequency response in a spin-polarized VCSEL. While the output circular polarization in a VCSEL follows the out-of-plane magnetization characteristics of the ferromagnetic spin injector, the output polarization of the spin-polarized single-photon source shows a switching behavior which is explained by invoking the exciton fine structure in the quantum dots and the effects of electron–hole exchange splitting due to in-plane quantum dot rotational asymmetry.
影响因子：
4
作者：
Gerardot, B. D.;Seidl, S.;Petroff, P. M.
通讯作者：
Petroff, P. M.