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Design of metamaterial surfaces with broadband absorbance |
Optics Letters, Vol. 37, Issue 3, pp. 308-310 (2012)
http://dx.doi.org/10.1364/OL.37.000308
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Abstract
A simple design paradigm for making broadband ultrathin plasmonic absorbers is introduced. The absorber’s unit cell is composed of subunits of various sizes, resulting in nearly 100% absorbance at multiple adjacent frequencies and high absorbance over a broad frequency range. A simple theoretical model for designing broadband absorbers is presented. It uses a single-resonance model to describe the optical response of each subunit and employs the series circuit model to predict the overall response. Validity of the circuit model relies on short propagation lengths of the surface plasmons.
© 2012 Optical Society of America
OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(310.3915) Thin films : Metallic, opaque, and absorbing coatings
(310.6628) Thin films : Subwavelength structures, nanostructures
(310.6805) Thin films : Theory and design
ToC Category:
Thin Films
History
Original Manuscript: August 9, 2011
Revised Manuscript: November 18, 2011
Manuscript Accepted: December 3, 2011
Published: January 19, 2012
Citation
Chihhui Wu and Gennady Shvets, "Design of metamaterial surfaces with broadband absorbance," Opt. Lett. 37, 308-310 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-3-308
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