Journal
OPTICS EXPRESS
Volume 24, Issue 26, Pages 29896-29907Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.24.029896
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Funding
- DOE Light-Material Interactions in Energy Conversion Energy Frontier Research Center [DE-SC0001293]
- Global Climate and Energy Project (GCEP) at Stanford University
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We numerically demonstrate narrowband thermal emission with unity emissivity peak in the near-infrared range by critically coupling a flat tungsten surface with guided resonances of a dielectric photonic crystal slab. The tungsten surface is separated from the photonic crystal slab by a vacuum gap. The structure possesses significant tunability for both the center frequency and the linewidth of the thermal emission band. Moreover, the tungsten surface, being un-structured, should exhibit enhanced thermal stability at elevated temperature as compared to tungsten nanostructures. (C) 2016 Optical Society of America
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