SGER: Experimental Study of Four-Wave Mixing InGaAs/GaAs Multiple Quantum Wells with Application to Optical SwitchingDevices and Solition Generation

所提出的研究方案包括两个主要部分，即孤立波(超快脉冲)的产生和四波混频中的开关操作。对于孤立波的产生，将测量介质参数，如损耗和多量子波中的非线性因素，并在实验中考虑它们对结果的影响。这一部分的研究有望为超快激光光谱分析和诊断以及高速光通信生产有效的脉冲压缩器。拟议的开关器件研究将包括在不同泵浦形式的四波混频中进行开关的实验实现(一个或两个泵浦的正向、反向传输)。利用不同参数的样本研究了开关过程的输出与材料参数和控制信号的关系。MQW器件的输入功率要求和响应时间将通过不同的输入功率电平和输入和输出脉冲之间的延迟进行实验测量。在实验中，将使用几个多量子阱来演示级联和阵列格式的开关器件的使用。

The proposed research program consists of two main parts, i.e., solitary waves (ultrafast pulses) generation and switching operation in four-wave mixing. For solitary wave generation, the medium parameters such as loss and the nonlinear factor in MQWs will be measured and their effects on the results will be taken into account in the experiments. This part of the research is expected to produce effective pulse compressors for ultrafast laser spectroscopy and diagnoses, and for high-rate optical communications. The proposed study of switching devices will include experimental implementations of switching in four-wave mixing with different pump formats (forward, counter- propagation with one or two pumps). The dependence of the outputs of the switching processes on the material parameters and the control signal will be studied using samples with different parameters. The input power requirements, and response time of MQW devices will be measured experimentally using different input power levels and delays between the input and output pulses. The use of the switching devices in cascade and array formats will be demonstrated using several pieces of MQWs in the experiments.