Journal
OPTICS EXPRESS
Volume 24, Issue 5, Pages 5020-5025Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.24.005020
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Funding
- National Natural Science Foundation of China [11464019, 11564017, 11264017, 61308096]
- Young Scientist Development Program of Jiangxi Province [20142BCB23008]
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Multispectral light perfect absorption is desired for many applications. Herein, we propose and demonstrate a novel multi-band light perfect absorber (MLPA) scheme based on a triple-layer dielectric meta-material structure coupled with a metal substrate. Four absorption bands with the maximal absorbance up to 98.9% and the narrow bandwidth down to 2 nm are achieved in the visible range. Optical cavity resonances and the plasmon-like dipolar resonance of the high-index dielectric resonators and their hybridization effects contribute to the observed absorption behaviors. Moreover, the obtained MLPA is with high scalability in the frequency range by tuning the structural parameters. These features pave a new and feasible way for multispectral light absorption and hold applications in the optoelectronic detection, filtering and imaging. (C) 2016 Optical Society of America
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