Infrared (IR) Absorber Based on Multiresonant Structure

Author

Jaradat, Hamzeh ; Akyurtlu, Alkim

Author_Institution

Electr. & Comput. Eng. Dept., Univ. of Massachusetts, Lowell, MA, USA

Volume

11

fYear

2012

fDate

7/4/1905 12:00:00 AM

Firstpage

1222

Lastpage

1225

Abstract

In this letter, an absorber design is introduced that has a very wide absorption band at normal incidence over the midrange infrared (IR) wavelength regime. The proposed structure is comprises four layers, where the extra layer adds a degree of freedom in optimizing the response compared the conventional three-layered absorbers (dielectric spacer sandwiched between a ground thin film and a resonant conducting pattern). The simulations revealed a broadband absorption region that extends from 3 up to 12 μm of light wavelength achieving more than 120% of full bandwidth at half-maximum (FWHM).

Keywords

dielectric materials; light absorption; optical multilayers; dielectric spacer; four layered absorbers; full bandwidth at half-maximum; ground thin film; infrared absorber; midrange infrared wavelength regime; multiresonant structure; optical layer; resonant conducting pattern; very wide absorption band; Absorption; Broadband communication; Dielectrics; Electric fields; Magnetic fields; Magnetic resonance; Metamaterials; Broadband absorbers; infrared (IR) absorbers; metamaterials; multiresonant structure;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2012.2223652

Filename

6327589