Infrared Perfect Absorber Based on Nanowire Metamaterial Cavities
Editor(s)
Willner, Alan E.
Abstract
An infrared perfect absorber based on a gold nanowire metamaterial cavities array on a gold ground plane is designed. The metamaterial made of gold nanowires embedded in an alumina host exhibits an effective permittivity with strong anisotropy, which supports cavity resonant modes of both electric dipole and magnetic dipole. The impedance of the cavity modes matches the incident plane wave in free space, leading to nearly perfect light absorption. The incident optical energy is efficiently converted into heat so that the local temperature of the absorber will increase. Results show that the designed absorber is polarization-insensitive and nearly omnidirectional for the incident angle.
Recommended Citation
Y. He et al., "Infrared Perfect Absorber Based on Nanowire Metamaterial Cavities," Optics Letters, Optical Society of America, Jan 2013.
The definitive version is available at https://doi.org/10.1364/OL.38.001179
Department(s)
Mechanical and Aerospace Engineering
International Standard Serial Number (ISSN)
0146-9592
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2013 Optical Society of America, All rights reserved.
Publication Date
01 Jan 2013
