外文题目: Polarization-independent broadband absorber based on pyramidal metal-dielectric grating structure
作者: Wu, Jun
刊名: Opt. Mater.
年: 2016 卷: 62 页： 47--51
英文关键词:
Grating; Broadband absorption; Metamaterials
PHASE-CHANGE MATERIALS; PERFECT ABSORBER; LIGHT-ABSORPTION; METAMATERIAL; FREQUENCIES; SURFACE; DESIGN
英文摘要:
An infrared broadband polarization-independent metamaterial absorber is designed and investigated. It consists of a pyramidal metal-dielectric multilayered rectangle grating structure. The absorber exhibits near-unit absorption at multiple adjacent wavelengths overlapping with each other, which results in a high absorption over a wide wavelength range. The absorbance at normal incidence is higher than 90% in a wavelength range of 2321 nm-4631 nm, and the broadband absorption performance can be maintained over a large incident angle range. Furthermore, the mechanism of such broadband absorption are investigated by illustrating the electric field distributions for TE polarization and magnetic field distributions for TM polarization at the resonant wavelengths. It is believed that the conclusions can be applied for developing polarization-independent broadband absorber. (C) 2016 Elsevier B.V. All rights reserved.


文献类型: 期刊论文
正文语种: English
收录类别: SCIEI
DOI: 10.1016/j.optmat.2016.09.060


全文传递服务