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飞秒脉冲激光系统中Gires-Tournois镜的设计

Design of Gires-Tournois Mirrors Used for the Dispersion Compensation in Femtosecond Lasers
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摘要 介绍了Gires-Tournois镜的基本结构,运用薄膜光学理论计算了Gires-Tournois镜的色散,分析了各个组成部分对Gires-Tournois镜性能的影响.结果表明:高反射膜堆的选择影响Gires-Tournois镜的反射率性能,高反射膜堆的周期数取值在20~30之间能得到较理想的Gires-Tournois镜设计性能;Gires-Tournois腔的厚度影响Gires-Tournois镜的色散性能,Gires-Tournois腔的光学厚度通常选择为四分之一中心波长的2或4倍,部分反射膜堆的结构影响Gires-Tournois镜的色散性能,部分反射膜堆的周期数应小于5. Basic structure of Gires-Tournois mirror is described and the dispersion performance is calculated.The factors affecting the performance of the Gires-Tournois mirrors are discussed.The results show that the layer number of high reflector affects the reflectance of the GiresTournois mirrors but the thickness of the Gires-Tournois cavity and the layer number of the top reflector affect the dispersion performance of the Gires-Tournois mirrors;to achieve good design performance,the layer number of high reflector,the thickness of the Gires-Tournois cavity and the layer number of the top reflector are selected to be 40~60,λ/2orλand less than 5.
出处 《光子学报》 EI CAS CSCD 北大核心 2013年第8期967-972,共6页 Acta Photonica Sinica
基金 国家自然科学基金(No.60378005) 瞬态光学与光子技术国家重点实验室开放基金(No.SKLST201110)资助
关键词 Gires-Tournois镜 光学薄膜 色散补偿 超短脉冲系统 Gires-Tournois mirror Optical film Dispersion compensation Ultrashort laser
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