纳米精度干涉测量中半导体激光器的光频调制方法  

Frequency modulation methods of laser diode used in nanometer-accuracy interference measurement

作　　者：卢洪斌[1] 

机构地区：[1]嘉兴学院

出　　处：《光学仪器》2008年第2期21-25,共5页Optical Instruments

摘　　要：根据半导体激光器光注入调制理论和实验,基于不同光注入条件下的频率调制特性,提出了三种半导体激光器光频调制的具体方案。通过使用给出的光强反馈及电路控制方法,能使半导体激光器在其光频受调制期间,其输出光强的变化的范围大幅度减小。这些半导体激光器光频调制的方法用于干涉测量系统中,能极大地减小光强波动对测量精度的影响,可实现纳米级的高精度激光干涉测量。According to the theory and experiment of light injected in laser diode, ana oased on the characteristics of laser diode＇s frequency modulation under different injection condition, three schemes of frequency modulation been put forward. By the method of light-intensity feedback and control circuit, the variations scope of light-intensity are reduced greatly during the modulation of laser diode＇s output frequency. These methods of frequency modulation used in interference can reduce the influence of light-intensity modulation and realize nanometeraccuracy interference measurement.

关 键 词：干涉测量 注入锁定 光谱烧孔 光频调制 

分 类 号：TN249[电子电信—物理电子学]