Open AccessAn extremely broad band metamaterial absorber based on destructive interference
Author(s) -
Jingbo Sun,
Lingyun Liu,
Guoyan Dong,
Ji Zhou
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.021155
Subject(s) - metamaterial , optics , materials science , transmittance , interference (communication) , refractive index , metamaterial absorber , bandwidth (computing) , reflection (computer programming) , absorptance , dispersion (optics) , optoelectronics , broad band , frequency band , reflection coefficient , tunable metamaterials , reflectivity , physics , telecommunications , computer science , channel (broadcasting) , programming language
We propose a design of an extremely broad frequency band absorber based on destructive interference mechanism. Metamaterial of multilayered SRRs structure is used to realize a desirable refractive index dispersion spectrum, which can induce a successive anti-reflection in a wide frequency range. The corresponding high absorptance originates from the destructive interference of two reflection waves from the two surfaces of the metamaterial. A strongly absorptive bandwidth of almost 60 GHz is demonstrated in the range of 0 to 70 GHz numerically. This design provides an effective and feasible way to construct broad band absorber in stealth technology, as well as the enhanced transmittance devices.