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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 a new type of optical frequency selection and optical frequency identification device. Since the operating frequency of the device is determined by the atomic transition frequency, it has a very stable center frequency, a very narrow working bandwidth, Transmission efficiency and many other advantages. In recent years, the device has gained more and more extensive applications in various photodetection fields, such as laser radar and laser communication, and thus greatly enhanced the capability and level of the photovoltaic system. The principle, structure and development status of several typical atomic filter and frequency discriminating devices are introduced. The application technologies and application effects of these atomic filter or frequency discriminating devices in several important photodetection systems are introduced.