半导体激光器驱动电路的研究与设计  

Research and Design of Driving Circuit for Semiconductor Laser

作　　者：袁林成 蒋书波[1] 宋相龙[1] 陆志峰[1] 

机构地区：[1]南京工业大学自动化与电气工程学院,南京210009

出　　处：《电子器件》2015年第6期1287-1291,共5页Chinese Journal of Electron Devices

基　　金：国家自然科学基金(青年基金);基于光子晶体光纤的拉曼谐振增强效应研究(61308066)

摘　　要：半导体激光器驱动电路的设计是决定半导体激光器系统稳定性的重要技术,对于激光器输出特性有重要影响。其注入电流的变化会对激光器出射频率产生变差,最终导致跳模或多模工作,为了确保半导体激光器的激光输出质量,研究设计了一款高性能的激光驱动电路,主要包括电源电路,恒流源电路,保护电路与及延时缓冲电路四部分。在Multisim软件中进行了电路仿真,并与实际电路中的结果图做了比较,最后应用光子计数器测试其激光输出强度波动限定在200 kilo-count/s至400kilo-count/s范围内,具有极高的稳定性与精度,实验结果表明足以满足后续实验要求。The design of semiconductor laser driving circuit is an important technology to decide the stability ofsemiconductor laser system,and it has an important impact on the output characteristics of the laser.The variation ofinjection current will cause the laser emission frequency variation,eventually lead to jump mode or multi-mode op-eration. In order to ensure the quality of the laser output of semiconductor laser,a high performance laser driving cir-cuit is studied and designed,this driving circuit includs power supply circuit,constant current source circuit,protec-tion circuit and time delay buffer circuit four parts;C is simulated by software Multisim. The actual circuit resultscompares with the exploited result map,finally the application of photon counter to test the laser output intensityfluctuation is defined in the 200 kilo-count/s to 400 kilo-count/s range,stability and has a high precision,the experi-mental results show that the sufficient stability and high precision satisfy the follow-up experiment.

关 键 词：驱动电路 恒流源 MULTISIM 激光器 

分 类 号：TP253[自动化与计算机技术—检测技术与自动化装置]