Open AccessParallel LC circuit model for multi-band absorption and preliminary design of radiative cooling
Author(s) -
Rui Feng,
Jun Qiu,
Linhua Liu,
Weiqiang Ding,
Lixue Chen
Publication year - 2014
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.22.0a1713
Subject(s) - radiative transfer , optics , equivalent circuit , materials science , polarization (electrochemistry) , absorption (acoustics) , dielectric , polariton , capacitance , omnidirectional antenna , optoelectronics , physics , computer science , telecommunications , voltage , chemistry , electrode , quantum mechanics , antenna (radio)
We perform a comprehensive analysis of multi-band absorption by exciting magnetic polaritons in the infrared region. According to the independent properties of the magnetic polaritons, we propose a parallel inductance and capacitance(PLC) circuit model to explain and predict the multi-band resonant absorption peaks, which is fully validated by using the multi-sized structure with identical dielectric spacing layer and the multilayer structure with the same strip width. More importantly, we present the application of the PLC circuit model to preliminarily design a radiative cooling structure realized by merging several close peaks together. This omnidirectional and polarization insensitive structure is a good candidate for radiative cooling application.