连续可调纳秒脉冲LD驱动电源的研制

为了满足单模尾纤输出脉冲半导体激光器及其后级光放大的要求,研制了一种重频、脉宽及峰值电流均连续可调的纳秒脉冲驱动电源.该电源使用功率场效应管作为开关,通过分析其驱动特性,采用合适的栅极驱动电路,从而缩短了脉冲宽度,增加了带负载能力;同时电源中的保护电路采用自断电等保护措施,能有效保证LD的安全工作.实验结果表明,该驱动电源工作稳定,能满足单模尾纤输出脉冲LD重频、脉宽、峰值可调的要求.

Design of driver circuit for Continuously adjustable ns pulse LD

In order to meet the need of single-mode pigtailed pulse LD and its later optical amplification,a ns pulse LD drive circuit with variable pulse,frequency and power was designed by using metal oxide semiconductor field effect transistor(MOSFET) as switch.By analyzing the drive characteristic of MOSFET,a suitable grid drive circuit was used,so the pulse width and the ability to bring loads were improved.A protect circuit was designed to protect the expensive LD from over shot,sharps,arcs etc.It is concluded t...