AUTHOR=Yang Mingyang , Zhou Ming , Yu Jianwen , Zhang Yibo , Xu Benyan , Cheng Wenjun , Li Xuyin 

TITLE=Infrared and Terahertz Compatible Absorber Based on Multilayer Film

JOURNAL=Frontiers in Physics

VOLUME=Volume 9 - 2021

YEAR=2021

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2021.633971

DOI=10.3389/fphy.2021.633971

ISSN=2296-424X

ABSTRACT=In this paper, a similar Fabry-Perot cavity structure utilizing multilayer film structure consist of an ultrathin metal film is demonstrated for absorbing the infrared ray. This structure has low emissivity in the atmospheric window (3-5 and 8-14 μm) and high emissivity in the non-atmospheric window (5-8 μm). These properties improved the stealth performance cause the high emissivity in 5-8 μm can radiate more energy to reduce its temperature. Based on this, the periodic microstructures were added to the surface of the materials that enhanced the absorption of terahertz wave (0.1-2.7 THz). The absorber based on multilayer film has simple structure and low manufacturing cost. This work may provide a new strategy for infrared and terahertz compatible stealth technology.