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窄线宽稳频激光器在精密干涉测量、光学频率标准、激光通信、激光陀螺、激光雷达、基本物理常数测量和冷原子系统等研究领域有着广泛的应用。自由运转的半导体激光器每天的频率漂移量可以达到GHz,因此研究半导体激光器的稳频具有十分重要的意义。以780 nm的半导体激光器稳频为例,介绍了目前广泛使用的各种半导体激光稳频技术的基本原理及试验方案,如消多普勒饱和吸收光谱稳频技术、消多普勒双色谱稳频技术、调制转移谱稳频技术、调频光谱稳频技术和频率-电压转换稳频技术,并对各种稳频方法的性能和特点进行了分析。
Narrow linewidth frequency stabilizing lasers are widely used in the fields of precision interferometry, optical frequency standard, laser communication, laser gyro, laser radar, basic physical constant measurement and cold atomic system. Free-running semiconductor laser frequency drift per day can reach GHz, so the study of semiconductor laser frequency stabilization is of great significance. Taking the 780 nm laser diode as an example, the basic principles and experimental schemes of various semiconductor laser frequency stabilization techniques are introduced. For example, Doppler saturation absorption spectroscopy frequency stabilization technique, Doppler doublechromatography stabilization Frequency technology, modulation and transfer spectrum frequency stabilization technology, frequency spectrum frequency stabilization technology and frequency-voltage conversion frequency stabilization technology, and the performance and characteristics of various frequency stabilization methods are analyzed.