用于高功率激光装置的光电触发模块  

Photoelectronic Trigger Module in High-Power Laser System

作　　者：张鹏[1] 李学春[1] 李国扬[1] 张生佳[1] 

机构地区：[1]中国科学院上海光学精密机械研究所高功率激光物理国家实验室,上海201800

出　　处：《中国激光》2011年第5期248-252,共5页Chinese Journal of Lasers

摘　　要：为了减小高功率激光装置中高压干扰电信号对触发脉冲信号的影响,提出了一种可抗干扰、低时间抖动、快上升沿、高精度的光电触发模块。它由发射模块和接收模块构成,发射模块和接收模块之间通过光纤连接。由于触发信号以光信号的方式传送到终端,因此传输过程中触发信号不会受到电干扰信号的影响。该触发模块输出脉冲的上升沿为4.8 ns,对触发信号引入的时间抖动峰峰值约为317 ps,可以为输入阻抗为高阻或50Ω匹配的被触发仪器提供4 V左右的逻辑门电路(TTL)输出电压,满足高功率激光装置的要求。A photoelectronic trigger module with low time jitter and fast rise time is presented which is used to reduce the influence of electrical interference on trigger signal in the high-power laser system. It is made up of a transmitter and a receiver which are connected with each other by an optical fiber. Since the trigger signal is transmitted from the transmitter to the receiver in the form of light, it will not be affected by electrical interference during its transmission. This photoelectronic trigger module is able to provide an electrical pulse with amplitude of 4 V whose rise time is 4.8 ns. The peak-to-peak value of additional time jitter of trigger signal resulting from this trigger module is 317 ps which meets the requirements of high-power laser systems.

关 键 词：光电子学 光电触发 高功率激光 减小电干扰 光电转换 

分 类 号：TN29[电子电信—物理电子学]