Omnidirectional wavelength selective emitters/absorbers based on dielectric-filled anti-reflection coated two-dimensional metallic photonic crystals

Yi Xiang Yeng; Jeffrey B. Chou; Veronika Rinnerbauer; Yichen Shen; Sang-Gook Kim; John D. Joannopoulos; Marin Soljačić; Ivan Čelanović

doi:10.1117/12.2067796

28 August 2014 Omnidirectional wavelength selective emitters/absorbers based on dielectric-filled anti-reflection coated two-dimensional metallic photonic crystals

Yi Xiang Yeng, Jeffrey B. Chou, Veronika Rinnerbauer, Yichen Shen, Sang-Gook Kim, John D. Joannopoulos, Marin Soljačić, Ivan Čelanović

Author Affiliations +

Proceedings Volume 9170, Nanoengineering: Fabrication, Properties, Optics, and Devices XI; 91700X (2014) https://doi.org/10.1117/12.2067796
Event: SPIE NanoScience + Engineering, 2014, San Diego, California, United States

Abstract

We demonstrate designs of dielectric-filled anti-reflection coated (ARC) two-dimensional (2D) metallic photonic crystals (MPhCs) capable of omnidirectional, polarization insensitive, wavelength selective emission/absorption. Up to 26% improvement in hemispherically averaged emittance/absorptance below the cutoff wavelength is observed for optimized hafnium oxide filled 2D tantalum (Ta) PhCs over the unfilled 2D Ta PhCs. The optimized designs possess high hemispherically averaged emittance/absorptance of 0.86 at wavelengths below the cutoff wavelength and low hemispherically averaged emittance/absorptance of 0.12 at wavelengths above the cutoff wavelength, which is extremely promising for applications such as thermophotovoltaic energy conversion, solar absorption, and infrared spectroscopy.

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Yi Xiang Yeng, Jeffrey B. Chou, Veronika Rinnerbauer, Yichen Shen, Sang-Gook Kim, John D. Joannopoulos, Marin Soljačić, and Ivan Čelanović "Omnidirectional wavelength selective emitters/absorbers based on dielectric-filled anti-reflection coated two-dimensional metallic photonic crystals", Proc. SPIE 9170, Nanoengineering: Fabrication, Properties, Optics, and Devices XI, 91700X (28 August 2014); https://doi.org/10.1117/12.2067796

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