脉冲激光引信用PFM和PWM式LD驱动电路的研究  

Study on the PFM and PWM driver circuit of LD for laser fuze

作　　者：江小华[1] 陈炳林 张河[1] 孙全意[1] 

机构地区：[1]南京理工大学机电工程系204教研室,江苏南京210094

出　　处：《强激光与粒子束》2004年第11期1449-1452,共4页High Power Laser and Particle Beams

基　　金：总装备部十五计划项目资助课题

摘　　要：　在激光引信的通讯系统中,针对引信用脉冲式半导体激光器驱动电路的脉冲宽度、频率、功率可调的需要,根据LD驱动电路的工作原理,建立了LD驱动电路的一般模型。然后用电子多频振荡器提供驱动信号,用双MOS驱动器来驱动半导体激光器,通过大量的实验、仿真、分析、比较,设计出了方便可调的大功率LD的驱动电路,该电路的脉冲频率和脉冲宽度可方便调整。并且该驱动电路的频率调节范围大(10Hz～20kHz);脉冲宽度可以从几ns到几百ns进行调节,大大提高了激光引信通讯系统的性能与可靠性。Because of the needs of variable pulse width, variable frequency and variable power of LD in the laser fuze communication systems, a model of the driver circuit is brought out for the system based on the circuits's principle. Using retriggerable monostable multivibrators to provide the trigger signal and double MOS driver to drive the LD, with a lot of experiments, emulations and comparisons, the variable frequency, pulse width and power driver circuit is designed. And the pulse frequency and width can be changed easily for its situations. The driver circuit has large range frequency modulated from 10 Hz to 2 kHz and large range pulse width modulated from several nanoseconds to several hundreds nanoseconds. So the whole system capability and reliability can be improved greatly.

关 键 词：激光通讯 驱动电路 脉冲频率调制(PFM) 脉冲功率调制(PWM) 

分 类 号：TJ439.2[兵器科学与技术—火炮、自动武器与弹药工程]