文档介绍：天津工业大学硕士学位论文纳秒脉冲半导体激光器驱动电源研究姓名:陆晓元申请学位级别:硕士专业:物理电子学指导教师:林久令 20080101 摘要论文阐述纳秒脉冲半导体激光器驱动电源的研制,对元件选择电路、有源脉冲变压器、纳秒脉冲产生电路的设计进行了详细介绍。采用了基于Marx Bank形式的纳秒脉冲生成电路来产生纳秒脉冲,其特征是采用有源脉冲变压器连接纳秒脉冲源和高速纳秒脉冲形成电路;采用有源脉冲变压器作为触发脉冲和纳秒脉冲电路的隔离电路,提高了触发脉冲电路元件寿命, 保护了触发脉冲电路,纳秒脉冲产生电路的工作电压降低了20V左右;纳秒脉冲产生电路采用表面贴装元件,与插针式元件电路相比,纳秒脉冲宽带(FWtiM)小于2ns、上升时问小于1ns,最高重复频率为IOOKHz左右。通过对设计的纳秒脉冲半导体激光器驱动电源的输出特性进行了测量、分析,发现在一定的范围内改变高速脉冲形成电路的供电电压,输出信号的上升速度和供电电压大致呈现线性关系,脉冲的幅度值也和供电电压呈现线性关系,但是供电电压的变化和脉冲宽度并没有呈现出大致的线性关系,得出在一定范围内,通过改变电压改变了输出脉冲的幅度,以及上升速度的结论。研究成果可用于窄脉冲LD驱动、超宽带雷达、民用测距、军事用途的隐形目标探测等领域,对国防和民用有重要价值。关键词:半导体激光器,纳秒,脉冲变压器 Abstract This paper discusses anaffow—width pulsed power supply of ,We introduce thedevelopment andcharacteristics ,and we introduce the research status and theresearch significant oftheLD’Spower ,we analyze the operation principles and characteristics ofthe LD,and establish the scheme ofdesigning thepower supply ofthenarrow pulsed ,we discuss the design scheme ponent parameters ofthecircuitsin detailwhich include the nanosecond activepulsed transformer,high-peak nanosecond pulser. are many kinds ponents forthe pulsed normal tochoose ponents depending on which type and what environment of thepulsed LD being investigating,analysing the data and testing the scheme ofthemain cuicuitwhich Callproduce nanosecond pulse was iSbased on the use ofavalanche transistorsin aMarx Bank circuit. We adopt two stage circuits,in which the firthstage contains a low avalanche transistorand an activeimpulse transfolrner toimprove thetransmission performance ofthenanosecond second stage is aMarx Bank circuit,offering alarge andnarrow current pulse todrivetheLD. After fixing and debugging thepower can produce alarge—amplitude nanosecond pulse and itspeak currents isup to6A,pulse width is ,the risetime is lessthanlns,maximum pulse repetitionfrequency isup tolOOkHz.