A wide-band perfect light absorber at mid-wave infrared using multiplexed metal structures

Abstract

We experimentally demonstrate a wide band near perfect light absorber in the mid-wave infrared region using multiplexed plasmonic metal structures. The wide band near perfect light absorber is made of two different size gold metal squares multiplexed on a thin dielectric spacing layer on the top of a thick metal layer in each unit cell. We also fabricate regular non-multiplexed structure perfect light absorbers. The multiplexed structure IR absorber absorbs above 98% incident light over a much wider spectral band than the regular non-multiplexed structure perfect light absorbers in the mid-wave IR region.

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Cited by in corpus (4)

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• Broadband Absorbers and Selective Emitters based on Plasmonic Brewster Metasurfaces
• Multi-spectral near perfect metamaterial absorbers using spatially multiplexed plasmon resonance metal square structures
• Experimental Observation of Strong Coupling Between an Epsilon-Near-Zero Mode in a Deep Subwavelength Nanofilm and a Gap Plasmon Mode