基于光限幅效应时域滤波的分析  

Analysis of Time Domain Filtering Based on Optical Limiting Effect

作　　者：程坤[1] 赵军普[1] 胡东霞[1] 代万俊[1] 周维[1] 张鑫[1] 邓武[1] 蒋学君[1] 张崑[1] 张小民[1] 景峰[1] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《激光与光电子学进展》2011年第10期141-147,共7页Laser & Optoelectronics Progress

基　　金：中国工程物理研究院科学技术发展基金(2009B0401045)资助课题

摘　　要：脉冲的时间调制严重威胁高功率聚变激光装置在高通量下运行的自身安全甚至使聚变点火失败,因此必须根除或充分抑制。提出了一种基于光限幅效应时域滤波的方法,光限幅效应是非线性光学过程,可以通过材料实现低光强输入时透射率较高,高光强输入时透射率较低。介绍了光限幅效应的主要机制、研究概况,分析了适合用于光路中的限幅机制,最后讨论了该时域滤波方法在实际光路中的应用形式及发展前景。The time modulation is detrimental to high power laser facility and even can prevent fusion ignition, which must be eliminated or substantially suppressed at least. Time domain filtering technology is proposed to eliminate such a time modulation based on optical limiting （OL） effect. OL is a nonlinear optical process by which a material displays high transmission for low input intensity and low constant transmission at high input intensity or fluence. Characters of the main OL mechanisms are introduced. In addition, the realization methods of time domain filtering based on OL devices and the application prospect are discussed.

关 键 词：非线性光学 光限幅效应 时域滤波 反饱和吸收 

分 类 号：O437[机械工程—光学工程]