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The mechanism investigation of Ultrafast All-Optical Switch based on electron spin polarization relaxation at 1.55μm

机译:基于1.55μm电子自旋极化弛豫的超快全光开关机理研究

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Exciton saturation and optical nonlinearities caused by phase-space filling(PSF) in InGaAs(P) MQWs are investigated. In-well carrier population under pump beam is calculated as a function of time. Changes in absorption of the two circularly polarized component of the linear polarized test beam resulting from PSF are calculated by the semiconductor nonlinear absorption formula, respectively. The refractive indices of the two circularly polarized component are obtained from the K-K relations. Transient rotation angle of the major axis of the probe polarization is then deduced.
机译:研究了InGaAs(P)MQWs中由相空间填充(PSF)引起的激子饱和和光学非线性。泵浦光束下的井中载流子数量是时间的函数。由PSF引起的线性偏振测试光束的两个圆偏振分量的吸收变化分别通过半导体非线性吸收公式计算。从K-K关系获得两个圆偏振分量的折射率。然后推导探针极化的主轴的瞬时旋转角。

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