28 August 2014 Omnidirectional wavelength selective emitters/absorbers based on dielectric-filled anti-reflection coated two-dimensional metallic photonic crystals
Author Affiliations +
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.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yi Xiang Yeng, Yi Xiang Yeng, Jeffrey B. Chou, Jeffrey B. Chou, Veronika Rinnerbauer, Veronika Rinnerbauer, Yichen Shen, Yichen Shen, Sang-Gook Kim, Sang-Gook Kim, John D. Joannopoulos, John D. Joannopoulos, Marin Soljačić, Marin Soljačić, Ivan Čelanović, 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); doi: 10.1117/12.2067796; https://doi.org/10.1117/12.2067796
PROCEEDINGS
8 PAGES


SHARE
Back to Top