Optical polarization modulation and gain anisotropy in an electrically injected spin laser.
Optical polarization modulation and gain anisotropy in an electrically injected spin laser.
复制标题
电注入自旋激光器中的光学偏振调制和增益各向异性。
DOI：
10.1103/physrevlett.102.093904
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发表时间：
2009
影响因子：
8.6
通讯作者：
P. Bhattacharya
中科院分区：
文献类型：
--
作者：
D. Basu;D. Saha;P. Bhattacharya
研究了自旋引起的增益各向异性对电泵自旋偏振激光器输出偏振和阈值电流降低的影响。这些参数的分析形式是通过考虑从自旋注入器到有源区的扩散传输而得出的。该参数的计算值与 InAs/GaAs 量子点自旋偏振垂直腔表面发射激光器在 200 K 下测量得到的值非常一致。激光器输出偏振的电调制以 0.6 的峰值调制指数进行了演示。
The effects of spin-induced gain anisotropy on output polarization and threshold current reduction of electrically pumped spin-polarized lasers have been studied. Analytical forms of these parameters are derived by considering diffusive transport from the spin injector to the active region. The calculated values of the parameter are in excellent agreement with values obtained from measurements made at 200 K on an InAs/GaAs quantum dot spin-polarized vertical cavity surface-emitting laser. Electrical modulation of the output polarization of the laser is demonstrated with a peak modulation index of 0.6.