高温环境下高功率半导体激光器驱动电源设计

摘要

半导体激光器驱动电源的性能直接影响着激光输出稳定性和激光器寿命.给出了40℃高温环境下100 W高功率光纤耦合半导体激光器模块的驱动电源设计方法,主要包括：恒流源设计、TEC双向温度控制器及相应的单片机控制器和保护电路设计等.该驱动电源实现了电流输出范围0~45 A连续可调,电流控制精度优于1%；控温范围+15℃~+35℃,控温精度0.5℃.%　　The output stability and life of laser devices are directly affected by the performances of diode la⁃ser drivers. A design method of 100 W high-power fiber coupled diode laser module driver is described under 40℃high-temperature environment, which includes the design of constant-current sources, a temperature con⁃troller with TEC double directions, corresponding MCU controllers and protection circuits. The following func⁃tions of diode laser driver are obtained, i.e. the output current can be continuously adjusted from 0 A to 45 A, the current control accuracy is better than 1%, the range of temperature control is+15℃~+35℃and temperature control precision is 0.5℃.