Wavelength-Selective Infrared Metasurface Absorber for Multispectral Thermal Detection

Author

Joo-Yun Jung ; Jihye Lee ; Dae-Geun Choi ; Jun-Hyuk Choi ; Jun-Ho Jeong ; Eung-Sug Lee ; Neikirk, Dean P.

Author_Institution

Dept. of Nano Manuf. Technol., Korea Inst. of Machinery & Mater., Daejeon, South Korea

Volume

7

Issue

6

fYear

2015

Firstpage

1

Lastpage

10

Abstract

A wavelength-selective metasurface absorber suitable for use in multispectral microbolometer focal plane arrays in the long-wavelength infrared (LWIR) region is theoretically and experimentally investigated. We show that a thin metal metasurface, which is characterized by effective surface impedance, as an absorbing layer can be integrated with an asymmetric Fabry-Pérot cavity to construct a wavelength-selective perfect absorber. The absorbed infrared energy is mainly dissipated in a thin metal metasurface, in contrast to a multilayer metamaterial absorber. The calculated and experimental spectral responses of the metasurface absorbers show excellent wavelength-selective narrowband absorption to allow multispectral imaging in LWIR.

Keywords

bolometers; focal planes; infrared spectra; laser cavity resonators; light absorption; metamaterials; LWIR region; absorbed infrared energy; absorbing layer; asymmetric Fabry-Perot cavity; focal plane arrays; long-wavelength infrared region; multilayer metamaterial absorber; multispectral imaging; multispectral microbolometer; multispectral thermal detection; surface impedance; thin metal metasurface; wavelength-selective infrared metasurface absorber; wavelength-selective narrowband absorption; wavelength-selective perfect absorber; Absorption; Dielectrics; Infrared detectors; Metamaterials; Surface impedance; Metamaterials; Thermal IR detectors; metamaterials; subwavelength structures; thermal infrared (IR) detectors;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2015.2504975

Filename

7347328