We experimentally demonstrate propagation of surface plasmon polaritons in the near-IR window λ∊ (1.45 μm,1.59 μm) at the interface of indium-tin-oxide films with different thicknesses deposited on glass. Dispersion of such polaritons is strongly dependent on the film thickness, putting into evidence a regime in which polaritons at both films's interfaces are coupled in surface supermodes. The experimental data are shown to be in good agreement with the analytical model for thin and absorbing conducting films. Measurements on aluminum-doped zinc oxide, characterized by a redshifted plasma resonance, do not show any surface plasmon polariton excitation in the same wavelength window.

Thickness dependence of surface plasmon polariton dispersion in transparent conducting oxide films at 1.55μm / Michelotti, Francesco; Dominici, Lorenzo; Descrovi, E; Danz, N; Menchini, F.. - In: OPTICS LETTERS. - ISSN 0146-9592. - STAMPA. - 34:(2009), pp. 839-841. [10.1364/OL.34.000839]

Thickness dependence of surface plasmon polariton dispersion in transparent conducting oxide films at 1.55μm

MICHELOTTI, Francesco;DOMINICI, Lorenzo;MENCHINI F.
2009

Abstract

We experimentally demonstrate propagation of surface plasmon polaritons in the near-IR window λ∊ (1.45 μm,1.59 μm) at the interface of indium-tin-oxide films with different thicknesses deposited on glass. Dispersion of such polaritons is strongly dependent on the film thickness, putting into evidence a regime in which polaritons at both films's interfaces are coupled in surface supermodes. The experimental data are shown to be in good agreement with the analytical model for thin and absorbing conducting films. Measurements on aluminum-doped zinc oxide, characterized by a redshifted plasma resonance, do not show any surface plasmon polariton excitation in the same wavelength window.
2009
01 Pubblicazione su rivista::01a Articolo in rivista
Thickness dependence of surface plasmon polariton dispersion in transparent conducting oxide films at 1.55μm / Michelotti, Francesco; Dominici, Lorenzo; Descrovi, E; Danz, N; Menchini, F.. - In: OPTICS LETTERS. - ISSN 0146-9592. - STAMPA. - 34:(2009), pp. 839-841. [10.1364/OL.34.000839]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/360139
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