新型色散补偿薄膜的初始结构设计方法  

Novel Design Method for Initial Structure of Dispersion Compensation Filters

作　　者：罗震岳[1] 刘旭[1] 沈伟东[1] 薛晖[1] 顾培夫[1] 章岳光[1] 

机构地区：[1]浙江大学现代光学仪器国家重点实验室,浙江杭州310027

出　　处：《光学学报》2009年第9期2619-2623,共5页Acta Optica Sinica

基　　金：国家自然科学基金(60708013;60778025)资助项目

摘　　要：啁啾脉冲振荡(CPO)与飞秒激光显微系统都要求在一定带宽内能够提供大的色散补偿,如此大的色散补偿要求是之前应用于飞秒激光器的各种色散补偿薄膜结构难以达到的。为此提出一种将基于共轭腔与G-T腔混合结构的初始膜系设计,只要在此基础上稍加优化,就可以满足系统的色散补偿要求。针对CPO系统与飞秒激光显微系统的实际需求,提供了两个设计实例,验证了这种初始结构的有效性。相比与于单纯用计算机优化方法生成的膜系,该结构更加简单而规整,因而便于实际的加工制备。Chirped pulse oscillation （CPO） and femtosecond laser microscopy both require large dispersion compensation amount within a certain bandwidth. This required compensation amount is too large to achieve for those dispersion compensation filters that has already used in femtosecond laser system. A novel design method was introduced based on a conjugate cavity and Gires-Tournois cavity hybrid initial structure, dispersion compensation requirement of the system can be fulfilled by subsequent computer optimization. To prove the validity of this method, we apply two design examples were provided which meet the practical requirement of CPO and femtosecond laser microscopy. Compared with those designs by singly computer optimization, this design is much more simpler and in order, so it is easier for preparation.

关 键 词：光学薄膜 色散补偿 飞秒激光 

分 类 号：O484.4[理学—固体物理]