Heterostructure-based optical absorbers
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AbstractWe have fabricated optical absorbers based on heterostructures composed of thick metallic films and truncated all-dielectric photonic crystals. Under the tunneling mechanism, the light can enter the heterostructure without reflection and is greatly absorbed due to the strong local-field enhancement in the metallic film. With the increase in the thickness of the metal, the absorbance will tend to unity. Experiments, in good agreement with the simulations, demonstrate a maximum of absorbance close to 98%. Possible methods to realize a wide-angle or/and wideband absorption are also given. (C) 2010 Optical Society of America
All Author(s) ListDu GQ, Jiang HT, Wang ZS, Yang YP, Wang ZL, Lin HQ, Chen H
Journal nameJournal of the Optical Society of America B
Volume Number27
Issue Number9
Pages1757 - 1762
LanguagesEnglish-United Kingdom
Web of Science Subject CategoriesOptics; OPTICS

Last updated on 2021-14-01 at 23:21