Tunable figure of merit for a negative-index metamaterial with a sandwich configuration
Optics Letters, Vol. 34, Issue 22, pp. 3568-3570 (2009)
http://dx.doi.org/10.1364/OL.34.003568
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Abstract
Metamaterials with a free-standing Ag–SU-8–Ag sandwich configuration, perforated with a periodic array of cross-dipole apertures, are fabricated. The transmittance spectra of both experiment and simulation have indicated the existence of two transmission bands in mid-IR frequencies. The high-frequency transmission peak is the guided mode associated with the surface plasmon polariton (SPP), and its location strongly depends on the arm length of the cross-dipole. The lower-frequency transmission peak is proposed to be the antisymmetric plasmon polariton mode, and its location hardly shifts as the size of the cross-dipole varies. Numerical simulations indicate that, on increasing the arm length of the cross-dipole aperture, the coaction of the electric dipole-like mode and the SPP-associated guided mode results in a better figure of merit.
© 2009 Optical Society of America
OCIS Codes
(160.4760) Materials : Optical properties
(260.5740) Physical optics : Resonance
(310.6860) Thin films : Thin films, optical properties
(160.3918) Materials : Metamaterials
ToC Category:
Materials
History
Original Manuscript: June 1, 2009
Revised Manuscript: October 15, 2009
Manuscript Accepted: October 23, 2009
Published: November 12, 2009
Citation
Xudong Wang, Yong-Hong Ye, Chao Zheng, Yao Qin, and Tie Jun Cui, "Tunable figure of merit for a negative-index metamaterial with a sandwich configuration," Opt. Lett. 34, 3568-3570 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-22-3568
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