Accession Number : AD1040681

Title :   Metamaterial Perfect Absorber Analyzed by a Meta-Cavity Model Consisting of Multilayer Metasurfaces (Postprint)

Descriptive Note : Journal Article - Open Access

Corporate Author : University of South Florida Tampa United States

Personal Author(s) : Bhattarai,Khagendra ; Silva,Sinhara ; Song,Kun

Full Text :

Report Date : 05 Sep 2017

Pagination or Media Count : 12

Abstract : We demonstrate that the metamaterial perfect absorber behaves as a meta-cavity bounded between a resonant metasurface and a metallic thin-film reflector. The perfect absorption is achieved by the Fabry-Perot cavity resonance via multiple reflections between the quasi-open boundary of resonator and the close boundary of reflector. The characteristic features including angle independence, ultra-thin thickness and strong field localization can be well explained by this meta-cavity model. With this model, metamaterial perfect absorber can be redefined as a meta-cavity exhibiting high Q-factor, strong field enhancement and extremely high photonic density of states, thereby promising novel applications for high performance sensor, infrared photodetector and cavity quantum electrodynamics devices.

Descriptors :   metamaterials , thin films , resonance reflectors , photodetectors , metamaterial absorbers

Subject Categories : Miscellaneous Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE