原子滤光及鉴频技术在光电探测中的应用

Applications of Atomic Spectra Filtering and Atomic Frequency Discrimination in Optoelectronic Systems

原子滤光器是一种新型的光频选择与光频鉴别器件,由于该器件工作频率由原子的跃迁频率所决定,使之具有中心频率极稳、工作带宽极窄、以及带外抑制强、透射效率高等诸多优点。近年来,该器件在激光雷达、激光通信等多种光电探测领域获得了越来越广泛的应用,并由此大大提升了光电系统的能力和水平。介绍了几种典型的原子滤光及鉴频器件的原理、结构及其研制状况,并介绍这些原子滤光或鉴频器件在若干重要光电探测系统中的应用技术及应用效果。

Atomic filter is an optoelectronic device used for optical spectra filtering and optical frequency discrimination.As the working frequency of this device is determined by atomic or molecular transitions,the atomic fitler has ultra-high stability of working frequency,ultra-narrow working band-pass,good out-of-band suppression,high transmission,and so on.Therefore,the atomic filters are widely used in the fields of lidar and optical communication,and have enhanced the performance of lidar and optical communication systems.The principle,structure,development and some applications of the atomic filters are introduced and discussed.