期刊
OPTICS EXPRESS
卷 22, 期 18, 页码 21711-21718出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.22.021711
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资金
- Army Research Office through the Institute for Soldier Nanotechnologies [W911NF-13-D-0001]
- MIT S3TEC Energy Research Frontier Center of the Department of Energy [DE-SC0001299]
- Austrian Science Fund (FWF) [J3161-N20]
- Austrian Science Fund (FWF) [J3161] Funding Source: Austrian Science Fund (FWF)
- Austrian Science Fund (FWF) [J 3161] Funding Source: researchfish
We report the design of dielectric-filled anti-reflection coated (ARC) two-dimensional (2D) metallic photonic crystals (MPhCs) capable of omnidirectional, polarization insensitive, wavelength selective emission/absorption. Using non-linear global optimization methods, optimized hafnium oxide (HfO2)-filled ARC 2D Tantalum (Ta) PhC designs exhibiting up to 26% improvement in emittance/absorptance at wavelengths lambda below a cutoff wavelength lambda(c) over the unfilled 2D TaPhCs are demonstrated. The optimized designs possess high hemispherically average emittance/absorptance epsilon(H) of 0.86 at lambda < lambda(c) and low epsilon(H) of 0.12 at lambda > lambda(c). (C) 2014 Optical Society of America
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