All-dielectric bifunctional polarization converter with high transmission efficiency in near-infrared region

被引：3

作者：

Cui, Ying ^{[1
]}

Jiang, Huan ^{[2
]}

Wang, Li ^{[1
]}

Liu, Bingyi ^{[1
]}

Song, Jie ^{[1
]}

Jiang, Yongyuan ^{[1
,3
,4
,5
]}

机构：

[1] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China

[2] Guangdong Univ Technol, Sch Phys & Optoelect Engn, Guangzhou 510006, Peoples R China

[3] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China

[4] Key Lab Microopt & Photon Technol Heilongjiang Pr, Harbin 150001, Peoples R China

[5] Minist Ind & Informat Technol, Key Lab Micronano Optoelect Informat Syst, Harbin 150001, Peoples R China

来源：

APPLIED OPTICS | 2020年 / 59卷 / 13期

基金：

中国国家自然科学基金;

关键词：

ROTATOR; METASURFACES; INDEX;

D O I：

10.1364/AO.388097

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper, we demonstrate a polarization control device with different functions for oppositely propagating directions by a two-layer twisted silicon column array separated by a silica layer. The proposed structure can rotate the electric field directions of polarized linear wave backwards by 45 degrees and serve as a linear-to-circular converter for the polarized linear wave forwards . The physical mechanism is discussed by the Jones matrix, and the numerical results show that the maximum transmissions > 0.9 for the two functions of the proposed structure are achieved in the near-infrared region. The high transmission originates from the all-dielectric materials, which is a major advance compared with previously reported bifunctional converters. The proposed simply shaped device with high transmission efficiency has potential applications in optical imaging, sensing, etc. (C) 2020 Optical Society of America

引用

页码：3825 / 3832

页数：8

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