半导体激光器驱动电路的计算机仿真分析  

Computer Simulation of Diode Laser Driver

作　　者：张晶[1] 刘东明[1] 

机构地区：[1]长春理工大学光电信息学院,吉林长春130012

出　　处：《计算机仿真》2009年第12期356-359,共4页Computer Simulation

基　　金：基于机器视觉技术的工件检测系统(吉教科合字[2008]第442号)

摘　　要：直接调制的大电流窄脉宽驱动电源是半导体激光器获得高峰值功率输出的重要保证。为了研究半导体激光器驱动电路,提高系统的精度和抗干扰能力,采用计算机仿真的方法分析了半导体激光器脉冲电源基本电路和雪崩晶体管脉冲电源电路。通过仿真结果表明,脉冲电源中元件的寄生电感及串联电阻对激光器工作电流脉冲的波形影响很大。当寄生电感小时,放电电流波形的上升时间就短。可为设计半导体激光器驱动电路时,提供选取R、C、L的依据,并保证工作在欠阻尼的情况下,要获得最大的放电电流,储能电容器上的充电电压要高,使电路的串联电阻尽量要小。The performance of direct- modulating diode laser is dependent on large- current and narrow- width pulsed driver circuit. In order to study the diode laser driver circuit, the basic pulsed power circuit of diode laser is analyzed by using computer. The results show that for the pulse power, the parasitic inductance and series resistance have great influence upon the diode laser pulse current wave. The less the Parasitic inductance is the shorter the rising time of discharge current wave. Therefore, when designing the diode laser driver circuit, it can provide a reference for selecting appropriate R, C and L , and ensure it to get the largest discharge current in under - damping condition by making the charge voltage on capacitors higher and the series resistance as small as possible.

关 键 词：计算机仿真 激光驱动电路 雪崩晶体管 

分 类 号：TN86[电子电信—信息与通信工程]