Strong absorption and selective thermal emission from a mid-infrared metamaterial

Abstract

We demonstrate thin-film metamaterials with resonances in the mid-infrared wavelength range. Our structures are numerically modeled and experimentally characterized by reflection and angularly-resolved thermal emission spectroscopy. We demonstrate strong and controllable absorption resonances across the mid-infrared wavelength range. In addition, the polarized thermal emission from these samples is shown to be highly selective and largely independent of emission angles from normal to 45 degrees. Experimental results are compared to numerical models with excellent agreement. Such structures hold promise for large-area, low-cost metamaterial coatings for control of gray- or black-body thermal signatures, as well as for possible mid-IR sensing applications.

The following article has been submitted to Appl. Phys. Lett. After it is published, it will be found at http://apl.aip.org/. 14 pages including 4 figure pages

References in corpus (2)

• Wide-angle perfect absorber/thermal emitter in the THz regime
• Wide-angle infrared absorber based on negative index plasmonic metamaterial

Cited by in corpus (18)

• Gradient metasurfaces: a review of fundamentals and applications
• Nanophotonic engineering of far-field thermal emitters
• Broadband directional control of thermal emission
• High temperature epsilon-near-zero and epsilon-near-pole metamaterial emitters for thermophotovoltaics
• Tunable Large Resonant Absorption in a Mid-IR Graphene Salisbury Screen
• Controlling thermal emission with metasurfaces and its applications
• Controlling Thermal Emission by Parity-symmetric Fano Resonance of Optical Absorbers in Metasurfaces
• Perspective: Phonon polaritons for infrared optoelectronics
• Incandescent temporal metamaterials
• Broadband near-unidirectional absorption enabled by phonon-polariton resonances in SiC micropyramid arrays
• Controlling thermal emission of phonon by magnetic metasurfaces
• Mid-to-far infrared tunable perfect absorption by a sub - λ/100 nanofilm in a fractal phasor resonant cavity
• Thermal graphene metamaterials and epsilon-near-zero high temperature plasmonics
• Near-field thermal radiative transfer between two coated spheres
• Extremely broadband ultralight thermally emissive metasurfaces
• Controllable finite ultra-narrow quality-factor peak in a perturbed Dirac-cone band structure of a photonic crystal slab
• Compact photonic-crystal superabsorbers from strongly absorbing media
• Temporal coupled-mode theory for thermal emission from multiple arbitrarily coupled resonators