超表面透镜偏振可切换的多通道功能复用  

Metalens for polarization-switchable multi-functions multiplexingin multiple channels

作　　者：刘小东 朱亦鸣[2] LIU Xiao-Dong;ZHU Yi-Ming(Shanghai Nibo Electronic Technology Co.,Ltd,Shanghai 201615,China;School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海尼博电子科技有限公司,上海201615 [2]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《红外与毫米波学报》2024年第3期369-374,共6页Journal of Infrared and Millimeter Waves

摘　　要：超表面概念的提出为研究平面化和超薄的光学元器件提供了一种全新的设计思路。传统的几何相位型的超表面透镜受制于偏振锁定的限制,阻碍了其实现多功能的复用。文章提出了一种通过几何相位实现超表面透镜偏振解耦的方法。进一步,利用该方法作者实现了超表面聚焦透镜在纵向以及纵向和横向实现多通道功能(如聚焦光斑和聚焦涡旋)的复用和偏振可切换特性。相关研究为实现多功能可集成的平面化器件提供了新的研究思路。Metasurface provide a new platform for studying planar and ultrathin optical components.The traditional geometric-phase-based metalens are limited to the polarization locking,which inevitably hinders its function in multiplexing of multiple functions.Herein,an approach based on the geometric phase is proposed to realize polarization decoupling of metalens.This method can be applied to design metalens that enables functionalities of polarization switchable multi-functions(focusing and vortex beam etc...)multiplexing in the longitudinal direction or both the longitudinal and transverse directions.The results provide a new avenue for multifunctional integrated planar components.

关 键 词：超表面 超透镜 聚焦 涡旋 

分 类 号：O436.1[机械工程—光学工程]