Abstract

Integrating plasmonic metasurfaces with transparent conductive oxide (TCO) materials provides a new, to the best of our knowledge, opportunity to dynamically manipulate all degrees of freedom of light beams. Applying external stimuli to TCOs changes the plasmonic response of the nanostructure as a result of establishing an inhomogeneous optical property with deeply subwavelength films of epsilon-near-zero media, which is a challenge for better theoretical understanding of the dynamical tuning functionality. In this paper, we propose a dynamically reconfigurable reflective metasurface with the capability of electrical manipulation of the polarization state of near-infrared light. The structure behavior is investigated by numerical analysis and described based on the coupled-mode theory concept using the parameters of resonance wavelength, absorption, and radiation quality factors, altered by an external voltage. Variation of the applied bias voltage from ${-}{0.7}$ to 4.2 V for $p$-polarized light leads to a wide range of absorption quality factors from 43 to two. This change causes a dramatic decrease in the equivalent surface impedance of the metasurface in the ratio 4.9:0.2, which may pave the way to tailor polarization-manipulating functions such as circular-to-linear polarization conversion and cross-polarization conversion.

© 2021 Optical Society of America

Electrically tunable two-dimensional metasurfaces at near-infrared wavelengths

Jinyoung Hwang and Jong Wook Roh
Opt. Express 25(21) 25071-25078 (2017)

Broadband electrically controlled reflective metasurface for reconfigurable circularly polarized wavefront manipulation

Hai Xin, Jianing Yang, Ming-Chun Tang, Haochen Zhang, Zuojun Zhang, and Meijun Qu
Opt. Express 31(8) 13518-13527 (2023)

Ultra-broadband near-perfect absorber based on a single-layer Ge-assisted metasurface

Haosen Zhang and Kedi Wu
J. Opt. Soc. Am. B 39(1) 332-337 (2022)

Graphene-based metasurface absorber for the active and broadband manipulation of terahertz radiation

Ekin Bircan Boşdurmaz, Hodjat Hajian, Veysel Erçağlar, and Ekmel Özbay
J. Opt. Soc. Am. B 38(9) C160-C167 (2021)

Polarization-dependent reconfigurable light field manipulation by liquid-immersion metasurface

Ke He, Tingting Tang, Lei Bi, Xiao Liang, Jie Li, Chaoyang Li, Jun Qin, and Tongtong Kang
Opt. Express 31(9) 13739-13750 (2023)