An Infrared Spatial and Frequency Selective Metamaterial Perfect Absorber
Xianliang Liu, Tatiana Starr, Anthony Starr, and Willie J. Padilla
TL;DR
This paper presents a novel infrared metamaterial perfect absorber with spatial and frequency selectivity, achieving high absorption and enabling applications like hyperspectral imaging.
Contribution
It introduces the first spatially dependent metamaterial perfect absorber operating in the infrared regime with demonstrated spatial and frequency variation.
Findings
97% absorption at 6.0 microns wavelength
Spatial and frequency varying absorption demonstrated
Results agree with numerical simulations
Abstract
We demonstrate, for the first time, a spatially dependent metamaterial perfect absorber operating in the infrared regime. We achieve an experimental absorption of 97% at a wavelength of 6.0 microns, and our results agree well with numerical full-wave simulations. By using two different metamaterial sublattices we experimentally demonstrate a spatial and frequency varying absorption which may have many relevant applications including hyperspectral sub-sampling imaging
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