面向远程控制的半导体纳米激光器驱动电路设计与实现  

Design and Implementation of Driving Circuit of Semiconductor Nano Laser for Remote Control

作　　者：耿宝光 Geng Baoguang(Shanxi Engineering Vocational College,Taiyuan,Shanxi 030032,China)

机构地区：[1]山西工程职业学院,山西太原030032

出　　处：《应用激光》2021年第1期167-172,共6页Applied Laser

基　　金：国家“双高职业院校”建设项目;山西省优质高职院校建设基金项目(JY2019-YZ08)。

摘　　要：设计了一种用于面向远程控制的半导体纳米激光器驱动电路,并对其输出特性进行测试。设计的半导体纳米激光器恒流驱动电路硬件包括上电慢启动模块、恒流模块、过流保护模块三个模块,采用恒电流模式对激光器进行控制,确保其输出恒定光功率。整个电路由慢启动电路进行供电,电路属于电流串联负反馈电路,正向输入端与滑动变阻器连接。温控电路核心部分是MAX1969芯片,其控制精度可达到0.01℃。测试激光器系统,最终确定其阈值为18.5 mA,如果保持149.5 mA的泵浦电流,此时其输出功率为54.8 mW。该激光器温度、电流稳定性良好。In this paper, we design a semiconductor nano laser driver for remote control, and test its output characteristics. The constant current drive circuit of semiconductor nano laser includes three modules: slow start module, constant current module and over-current protection module. The constant current mode is used to control the laser to ensure its output constant optical power. The whole circuit is powered by the slow start circuit, which belongs to the current series negative feedback circuit, and the positive input is connected with the sliding rheostat. The core of the temperature control circuit is MAX1 969 chip, whose control accuracy can reach 0.01℃. By testing the laser system, the results show that the laser threshold is about 18.5 mA, when the pump current is 149.5 mA, the output power of the pump laser is 54.8 mW. The laser has good temperature and current stability.

关 键 词：电路设计 激光器驱动 半导体 远程控制 

分 类 号：TN710.6[电子电信—电路与系统]