Broadband achromatic phase retarder based on metal-multilayer dielectric grating  

作　　者：Na Li Wei-Jin Kong Feng Xia Mao-Jin Yun 李娜;孔伟金;夏峰;云茂金(College of Physics,Qingdao University,Qingdao 266071,China;Qingdao Laoshan No.2 Middle School,Qingdao 266071,China;Key Laboratory of Photonics Materials and Technology in Universities of Shandong,Qingdao University,Qingdao 266071,China)

机构地区：[1]College of Physics,Qingdao University,Qingdao 266071,China [2]Qingdao Laoshan No.2 Middle School,Qingdao 266071,China [3]Key Laboratory of Photonics Materials and Technology in Universities of Shandong,Qingdao University,Qingdao 266071,China

出　　处：《Chinese Physics B》2018年第5期215-219,共5页中国物理B(英文版)

基　　金：the National Natural Science Foundation of China(Grant No.11274188)

摘　　要：A new achromatic phase retarder based on a metal-multilayer dielectric grating structure is designed using the rigorous coupled wave analysis method and the genetic algorithm.The optimized phase retarder can maintain phase retardation around 90°from 900 nm to 1200 nm,and the maximum deviation is less than 4.5%while the diffraction efficiencies of TE and TM waves are both higher than 95%.Numerical analysis shows the designed phase retarder has a high fabrication tolerance of groove depth,duty cycle and incident angle.This achromatic phase retarder is simple in design and stable in performance,and can be widely used in optical systems.

关 键 词：achromatic phase retarder metal-multilayer dielectric grating rigorous coupled wave analysis(RCWA) genetic algorithm(GA) 

分 类 号：O439[机械工程—光学工程]