外文题目: Broadband light absorption by tapered metal-dielectric multilayered grating structures
作者: Wu, Jun
刊名: Opt. Commun.
年: 2016 卷: 365 页： 93--98
英文关键词:
Diffraction; Gratings; Optical resonance; Plasmons
COUPLED-WAVE ANALYSIS; SILICON SOLAR-CELL; PERFECT ABSORBER; METAMATERIAL; IMPLEMENTATION; FREQUENCIES; SURFACE; DESIGN
英文摘要:
We present the design and numerical simulations of a polarization-insensitive broadband infrared absorber with a tapered metal-dielectric multilayered grating structure. The absorber exhibits perfect absorption simultaneously at multiple frequencies close to one another, leading to a broadband absorption. Polarization-insensitive absorption of above 90% is observed at wavelengths of 2749-4966 nm, and the broadband absorption remains high for a wide range of incident angles. The electromagnetic field distributions at several selected wavelengths for both TE and TM polarizations are investigated to disclose the broadband absorption mechanism. It is anticipated that the designed broadband absorber can be applied in the field of thermal emitter, IR cloaking and solar power harvesting. (C) 2015 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.optcom.2017.12.006


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