Graphene-based Salisbury screen metasurfaces at infrared wavelengths

Shinpei Ogawa; Masaaki Shimatani; Shoichiro Fukushima; Satoshi Okuda; Masafumi Kimata

doi:10.1117/12.2518397

7 May 2019 Graphene-based Salisbury screen metasurfaces at infrared wavelengths

Shinpei Ogawa, Masaaki Shimatani, Shoichiro Fukushima, Satoshi Okuda, Masafumi Kimata

Proceedings Volume 11002, Infrared Technology and Applications XLV; 110022A (2019) https://doi.org/10.1117/12.2518397
Event: SPIE Defense + Commercial Sensing, 2019, Baltimore, MD, United States

Abstract

Graphene is an atomically thin carbon sheet with a two-dimensional hexagonal lattice structure that has drawn significant attention in many fields due to its unique electronic and optical properties. In this study, graphene Salisbury screen metasurfaces (GSMs) were theoretically investigated as wavelength-selective plasmonic metamaterial absorbers. The GSMs consist of a top graphene sheet, a middle insulator layer and a bottom reflector. The absorption wavelengths of GSMs with a continuous graphene sheet are demonstrated to be controllable according to the insulator layer thickness, which is similar to the case for a conventional Salisbury screen. The insulator thickness can be used to control the optical impedance to incident light using the graphene as a resistive sheet. GSMs with a periodic micropatch array of graphene can be used to control the absorption wavelength, mainly based on the graphene micropatch size and symmetry in conjunction with the insulator thickness. This wavelength selectivity is mainly attributed to the plasmonic resonance in graphene. In both structures, the chemical potential of graphene can be used to tune the absorbance and the absorption wavelength. These results will contribute to the development of electrically tunable and high-performance graphenebased wavelength- or polarization-selective absorbers or emitters.

Citation Download Citation

Shinpei Ogawa, Masaaki Shimatani, Shoichiro Fukushima, Satoshi Okuda, and Masafumi Kimata "Graphene-based Salisbury screen metasurfaces at infrared wavelengths", Proc. SPIE 11002, Infrared Technology and Applications XLV, 110022A (7 May 2019); https://doi.org/10.1117/12.2518397

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available