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Enlarging the negative-index bandwidth of optical metamaterials by hybridized plasmon resonances |
Optics Letters, Vol. 35, Issue 24, pp. 4205-4207 (2010)
http://dx.doi.org/10.1364/OL.35.004205
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Abstract
By exploiting the concept of internal surface plasmon polariton (I-SPP) resonances, which appear at nonsingle metallic film stacks, we have designed a metamaterial showing a negative effective index within a large frequency bandwidth. The designed structure consists of an arrangement of several fishnet layers. By properly adjusting the lattice and the thickness of the dielectric slab of the fishnet, an I-SPP mode can be excited at a certain frequency, giving rise to a negative permeability. Thus, when combining several fishnet layers, each one configured to excite an I-SPP at a slightly different frequency, the coupling among the fishnet layers will cause a plasmon hybridization effect that enables us to extend the negative-index bandwidth.
© 2010 Optical Society of America
OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(350.3618) Other areas of optics : Left-handed materials
(160.3918) Materials : Metamaterials
(050.6624) Diffraction and gratings : Subwavelength structures
ToC Category:
Diffraction and Gratings
History
Original Manuscript: August 11, 2010
Revised Manuscript: October 29, 2010
Manuscript Accepted: November 4, 2010
Published: December 14, 2010
Citation
R. Ortuño, C. García-Meca, F. J. Rodríguez-Fortuño, and A. Martínez, "Enlarging the negative-index bandwidth of optical metamaterials by hybridized plasmon resonances," Opt. Lett. 35, 4205-4207 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-24-4205
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