Special Section: Selected Papers from the 3rd Mediterranean Conference on Nanophotonics

Dual-surface plasmon excitation with thin metallic nanoslits

[+] Author Affiliations
Alina Karabchevsky

Ben Gurion University, Department of Electro-optic Engineering, Beer Sheva 84105, Israel

Mark Auslender

Ben Gurion University, Department of Electro-optic Engineering, Beer Sheva 84105, Israel

Ibrahim Abdulhalim

Ben Gurion University, Department of Electro-optic Engineering, Beer Sheva 84105, Israel

J. Nanophoton. 5(1), 051821 (July 21, 2011). doi:10.1117/1.3609276
History: Received January 31, 2011; Revised June 07, 2011; Accepted June 16, 2011; Published July 21, 2011; Online July 21, 2011
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Based on the experimental results and comparison between analytical and rigorous calculations, we have found that dual-surface plasmon (SP) waves are excited at both interfaces of a periodic array of thin metallic nanoslits: one at the grating-substrate interface and one at the grating-superstrate interface. Dual plasmons are excited for each diffraction order at two different wavelengths when the substrate differs from the superstrate. The splitting of the plasmons was investigated as a function of the refractive index difference between the substrate and superstrate. Verification of the extended nature of the double SPs is presented by comparing the rigorous calculation and analytic dispersion relation of extended SPs.

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© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation

Alina Karabchevsky ; Mark Auslender and Ibrahim Abdulhalim
"Dual-surface plasmon excitation with thin metallic nanoslits", J. Nanophoton. 5(1), 051821 (July 21, 2011). ; http://dx.doi.org/10.1117/1.3609276


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