Multispectral near-perfect metamaterial absorbers using spatially multiplexed plasmon resonance metal square structures
- 19 February 2013
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America B
- Vol. 30 (3), 656-662
- https://doi.org/10.1364/josab.30.000656
Abstract
Near-perfect IR light absorption at multiple wavelengths has been experimentally demonstrated by using multiplexed metal square plasmonic resonance structures. Optical power absorption over 95% has been observed in dual-band metamaterial absorbers at two separate wavelengths, and optical power absorption over 92.5% has been observed in triple-band metamaterial absorbers at three separate wavelengths. The peak absorption wavelengths are primarily determined by the sizes of the metal squares in the multiplexed structures. Electrical field distributions in the middle of the dielectric spacer layer were calculated at the peak absorption wavelengths. It is found that the strong light absorption corresponds to local quadrupole plasmon resonance modes in the metamaterial structures.Keywords
Funding Information
- National Science Foundation (NSF) (NSF-0814103)
- Air Force Office of Scientific Research (12RY05COR)
This publication has 43 references indexed in Scilit:
- Thin resonant structures for angle and polarization independent microwave absorptionApplied Physics Letters, 2009
- Perfect Metamaterial AbsorberPhysical Review Letters, 2008
- Omnidirectional absorption in nanostructured metal surfacesNature Photonics, 2008
- Total absorption of unpolarized light by crossed gratingsOptics Express, 2008
- Lamellar metallic grating anomaliesApplied Optics, 1994
- Losses of Plasmon Surface Waves on Metallic GratingJournal of Modern Optics, 1990
- The total absorption of light by a diffraction gratingOptics Communications, 1976
- The optical absorption in partially disordered silver filmsJournal of Physics F: Metal Physics, 1973
- A New Theory of Wood’s Anomalies on Optical GratingsApplied Optics, 1965
- XLII. On a remarkable case of uneven distribution of light in a diffraction grating spectrumThe London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, 1902