Wide-angle perfect absorber/thermal emitter in the THz regime

Details Wide-angle perfect absorber/thermal emitter in the THz regime Wide-angle perfect absorber/thermal emitter in the THz regime

2008-07-15

arxiv.org/abs/0807.2479v1

Physics

Optics

Submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevB.79.033101

We show that a perfect absorber/thermal emitter exhibiting an absorption peak of 99.9% can be achieved in metallic nanostructures that can be easily fabricated. The very high absorption is maintained for large angles with a minimal shift in the center frequency and can be tuned throughout the visible and near-infrared regime by scaling the nanostructure dimensions. The stability of the spectral features at high temperatures is tested by simulations using a range of material parameters.

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