GaAs光导开关飞秒激光点触发实验及分析

针对光导开关阵列和光纤分束耦合的实际应用环境，提出一种新的实验方案，用于测试当触发光源相对于开关光敏面为点光源时入射位置对输出脉冲的影响.实验证明,不同的入射位置对开关输出脉冲有很大的影响.在入射光从负极向正极扫描过程中输出脉冲逐渐增强，在正极附近输出达到峰值，但在电极边缘处有所减弱.分析表明,这一现象和开关体内电场的分布有密切联系.

Analysis on Performance of PCSS Triggered by Femto-Second Laser Pulse by Position

Aim at the application circumstance of coupling PCSS array with a bunch of fibers,a new experiment plane for testing the influence of laser trigger position to the performance of PCSS was proposed.The results showed that the output impulse was changed a lot by the different trigger position.It increased when the trigger point moved from the cathode to the anode.The impulse reaches its peak value when the laser near the anode but decreased when the trigger come to the edge of anode.The results were analyzed and an explanation based on theory of semiconductor and distribution of the electronic field inside was given.