采用原子滤光器的新型激光信标方案研究

提出了采用法拉第反常色散滤光器（ＦＡＤＯＦ）的光电双反馈激光信标新方案。该方案通过数字控制系统和光反馈系统的共同作用，使激光信标系统的稳定性、抗干扰性和可靠性大大提高，并实现了上电自动工作。这种新型激光信标的频率稳定度优于５×１０－９，在３０ｍｓ内可将半导体激光频率稳定在法拉第反常色散滤光器任一透射峰上。该方案可与采用法拉第反常色散滤光器的新型跟瞄系统匹配使用，对建立卫星激光通信链路有重要意义。

A Novel Scheme of Laser Beacon

This paper presents a novel scheme of laser beacon which employ the FADOF as frequency selecting device. By appling electronic and optical feedback to control beacon system，the stability, reliability and ability of overcoming interferenee of laser beacon could be enhanced. The system could also be initiated automatically. The frequency stability of the laser beacon was better than 5×10-9, and the LD frequency of the system could be stabilized at any peak of FADOF within 30 ms.This scheme could meet the need of novel pointng，aquisition and tracking (PAT) system using FADOF，and will have a big influence in buiding laser communication link betweeen satellite.