High efficiency active wavefront manipulation of spin photonics based on a graphene metasurface

被引：14
作者：
Bai, Xiangxing [1 ,2 ,3 ,4 ]
Tang, Linlong [2 ]
Yao, Wei [2 ]
Zang, Qing [1 ,3 ,4 ]
Lu, Jialu [1 ,3 ,4 ]
Liu, Shuang [2 ]
Lu, Wenqiang [2 ]
Liu, Yang [1 ,3 ,4 ]
Sun, Xiudong [1 ,3 ,4 ,5 ]
Lu, Yueguang [1 ,3 ,4 ]
机构：
[1] Harbin Inst Technol, Dept Phys, Harbin 150001, Heilongjiang, Peoples R China
[2] Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 401122, Peoples R China
[3] Minist Ind & Informat Technol, Key Lab Micronano Optoelect Informat Syst, Harbin 150001, Heilongjiang, Peoples R China
[4] Harbin Inst Technol, Key Lab Microopt & Photon Mchnol Heilongjiang Pro, Harbin 150001, Heilongjiang, Peoples R China
[5] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Shanxi, Peoples R China
来源：
OPTICS EXPRESS | 2019年 / 27卷 / 16期
基金：
中国国家自然科学基金;
关键词：
BAND; SURFACE; PLASMONS; LIGHT; POLARIZATION; LAYER;
D O I：
10.1364/OE.27.022475
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Metasurfaces have been widely studied for manipulating light fields. In this work, a novel metasurface element is achieved with a high circular polarization amplitude conversion efficiency of 88.5% that creates an opposite phase shift ranging from -180 degrees to 180 degrees between incidence and reflection for different spin components. By arranging the elements according to different requirements, spin-dependent reflection, focusing and scattering are demonstrated. It is also demonstrated that tuning of the Fermi energy is an viable way to active control the circular polarization conversion efficiency and expand the applicable bandwidth. The results open a new route for modifying and designing the wavefront of circular polarized light. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：22475 / 22484
页数：10
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