可编程多脉冲绿光激光器  

Programmable multi-pulse green laser

作　　者：吴丽霞[1] WU Lixia(Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350108,China)

机构地区：[1]中国科学院福建物质结构研究所,福州350108

出　　处：《激光技术》2024年第2期204-209,共6页Laser Technology

基　　金：国家重点研发计划资助项目(2021YFB3602500)。

摘　　要：为了满足平面激光诱导荧光技术和反射物速度干涉仪系统的应用要求,研制出一套可编程多脉冲绿光激光器。采用光强可编程技术,在任意波形发生器中输入一长脉冲电压波形,并将其加载到电光调制器上;通过对此电压脉冲波形的编辑,在实现时域上控制光强的同时输出多脉冲,且多脉冲的脉冲间隔、脉冲宽度及脉冲波形均任意可调。结果表明,放大过程的波形畸变得到矫正,获得脉宽为110 ns的绿光单脉冲方波;脉宽为50 ns、时间间隔5μs的绿光双脉冲方波;脉宽为40 ns、50 ns和60 ns、时间间隔为2μs、1μs的绿光三脉冲方波。该研究为平面激光诱导荧光技术和反射物速度干涉仪系统提供了参考。Programmable multi-pulse green laser was developed to satisfy the application requirements of a planer laser induced fluorescence and velocity interferometer system for any reflector.In the process of amplification,because the front edge gain of the laser pulse was fast and the back edge gain was slow,the laser pulse waveform was distorted.Adopting light intensity programmable technology,input the long pulse voltage waveform into an arbitrary waveform generator and load it onto the electro-optic modulator.In order to control the output light intensity in the time domain and output multiple pulses at the same time,the software was used to edit the long pulse voltage waveform according to the feedback of the output laser waveform.The results indicate that the waveform distortion during the amplification process is corrected.The following green laser square wave pulses are obtained:Single pulse with 110 ns pulse width;double pulses with 5μs pulse interval and 50 ns pulse width;three pulses with pulse widths of 40 ns,50 ns and 60 ns and pulse interval of 2μs and 1μs respectively.Of course,if necessary,by editing the long pulse voltage waveform,we can also get pulses of other parameters so as to obtain a laser with adjustable pulse number,waveform,pulse width,and pulse interval.This study provides a reference for planar laser-induced fluorescence technology and reflector velocity interferometer system.

关 键 词：激光器 多脉冲 脉冲整形 任意波形 电光调制器 

分 类 号：O436[机械工程—光学工程] O472.3[理学—光学] O472.8[理学—物理]