We describe negative group index surface plasmons in nano-structured metallic gratings. The periods and amplitudes of silver gratings exhibiting negative group index, as well as the attenuation lengths of the negative-index surface waves, are derived.
© 2007 OSA
(240.0240) Optics at surfaces : Optics at surfaces
(240.6680) Optics at surfaces : Surface plasmons
(350.0350) Other areas of optics : Other areas of optics
(350.2770) Other areas of optics : Gratings
M. Dinu and H. R. Stuart, "Negative Index Bands in Sub-wavelength Metallic Gratings," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, OSA Technical Digest Series (CD) (Optical Society of America, 2007), paper JWA15.
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