半导体激光器系统输出混沌激光研究进展

Research progress of optical chaos in semiconductor laser systems

混沌激光由于其类噪声的随机性和优良的抗干扰性,广泛应用于混沌保密通讯、激光雷达、光学检测等方面,而且半导体激光器自身体积小且结构稳定,成为产生混沌激光的主要激光器之一。但是,常规光反馈结构的半导体激光器系统输出的混沌激光信号带宽较窄且存在延时特征,这严重影响了混沌激光的应用。针对半导体激光器系统的上述问题,本文综合介绍了降低延时特征和优化混沌激光带宽的研究进展,对混沌保密通讯十分重要的混沌激光的同步性研究进展和半导体激光器系统输出的混沌激光在应用方面的研究进行了总结,并最终对半导体激光器系统输出的混沌激光的未来发展与应用前景进行展望。

Chaotic lasers are widely used in secure communication,lidar,optical detection and other applications due to their noise-like randomness,excellent anti-interference and other advantages.Moreover,as semiconductor lasers have small size,stable structure and other advantages,it has become one of the main lasers to produce optical chaos.However,the chaotic laser output from conventional optical feedback semiconductor lasers has the problems of narrow signal bandwidth and delay characteristics,which seriously affect their applications.With consideration for these problems,a comprehensive introduction to reduce the delay characteristics and optimize the chaotic laser bandwidth are reviewed based on recent literatures.This paper also summarizes the research progresses of chaotic secret communication,which is very important in the synchronization of chaotic lasers.The chaotic output of semiconductor lasers and the applications of chaotic lasers are also summarized,and then their development and potential future applications are discussed.