Sharp thermal emission and absorption from conformally coated metallic photonic crystal with triangular lattice

Biswas, R.; Zhou, D.; Puscasu, I.; Johnson, E.; Taylor, A.; Zhao, W.
August 2008
Applied Physics Letters;8/11/2008, Vol. 93 Issue 6, p063307
Academic Journal
A metallic photonic crystal consisting of a triangular lattice of holes in a silicon layer coated with gold is fabricated at a lattice pitch of 3.75 μm using conventional lithographic methods. The photonic crystal exhibits a deep reflection minimum and sharp thermal emission peak near the lattice spacing. Scattering matrix simulations agree well with measurements. This simple structure with a single patterned metallic layer has no emission sidebands and can be scaled to other lattice spacings to tune the wavelength of the absorption and emission peak.


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