Abstract

Beam splitters play important roles in several optical applications, such as interferometers, spectroscopy, and optical communications. In this study, we propose and numerically examine polarization-insensitive beam splitters utilizing two-step phase gradient all-dielectric metasurfaces in the visible spectrum. The metasurface is made of periodically arranged binary unit cells, and phase difference between neighboring unit cells on the surface is 180 deg. The metasurface is shown to have a special phase gradient whose sign changes periodically. The angle of the split beams on both sides and the corresponding total transmission value at 532 nm wavelength are found to be $\pm 46.8°$ and 0.90, respectively.

© 2018 Optical Society of America

Dynamic beam splitter employing an all-dielectric metasurface based on an elastic substrate

Hasan Kocer, Yılmaz Durna, Hamza Kurt, and Ekmel Ozbay
Opt. Lett. 45(13) 3521-3524 (2020)

Nanoscale beam splitters based on gradient metasurfaces

Di Zhang, Mengxin Ren, Wei Wu, Ninghui Gao, Xuanyi Yu, Wei Cai, Xinzheng Zhang, and Jingjun Xu
Opt. Lett. 43(2) 267-270 (2018)

Multifunctional tunable gradient metasurfaces for terahertz beam splitting and light absorption

Veysel Erçağlar, Hodjat Hajian, Andriy E. Serebryannikov, and Ekmel Ozbay
Opt. Lett. 46(16) 3953-3956 (2021)

One-way and near-absolute polarization insensitive near-perfect absorption by using an all-dielectric metasurface

Deniz Umut Yildirim, Amir Ghobadi, Mahmut Can Soydan, Andriy E. Serebryannikov, and Ekmel Ozbay
Opt. Lett. 45(7) 2010-2013 (2020)

Generation of a polarization insensitive Airy beam using an all-dielectric metasurface

Bairui Wu, Bijun Xu, Xiaogang Wang, and Hao Ying
Opt. Mater. Express 11(3) 842-847 (2021)