双啁啾介质镜的设计与分析  

Design and Analysis of Double-Chirped Dielectric Mirrors

作　　者：陈晓伟[1] 杨天新[1] 杨少英 于建[1] 李世忱[1] 

机构地区：[1]天津大学精密仪器与电子工程学院

出　　处：《光学学报》2002年第5期586-591,共6页Acta Optica Sinica

基　　金：国家自然科学基金 (6 970 80 0 4)资助课题

摘　　要：从双啁啾膜系原理出发 ,经过自行编制的软件优化计算 ,得到了由 5 4层介质膜组成的具有色散补偿功能的宽带高反镜 ,高反射率 (大于 99 9%)带宽宽达 12 0nm ,群延迟色散量为 - 5 0fs2 。对基于耦合模理论和传输线理论的双啁啾镜的原理和设计思路进行了分析 ,并通过计算机模拟验证了设计结果 ,分析了膜系各参量的改变对膜系的反射率和时延特性的影响。另外 ,在优化计算过程中发现了一些值得注意的有用的规律。Based on the double-chirped coating theory, then optimizing by computing with a software home programmed, a broadband high reflective mirror with the function of dispersion compensation is developed, which is composed of 54 dielectric layers. The bandwidth of high reflective (>99.9%) band reaches 120 nm, the value of group delay dispersion is -50 fs+2. The theory of double-chirped mirror and the design method based on coupled-mode and transmission-line theory are analyzed the design result is validated through computer simulation, and the dependences of reflectivity and group delay on the parameters of coatings are analyzed. In addition, some noticeable and valuable laws are found during the process of optimization.

关 键 词：设计 分析 双啁啾介质镜 耦合模理论 色散补偿 广义模拟退火法 优化计算 双啁啾膜系 钛宝石自锁模飞秒激光器 

分 类 号：TN248.35[电子电信—物理电子学] TH74[机械工程—光学工程]