Anomalous optical properties of absorptive modulated metal film under surface plasmon polariton excitation conditions

Alexandre Vladimirovich Kats; Alexey Yu Nikitin

doi:10.1117/12.559432

19 October 2004 Anomalous optical properties of absorptive modulated metal film under surface plasmon polariton excitation conditions

Alexandre Vladimirovich Kats, Alexey Yu Nikitin

Author Affiliations +

Proceedings Volume 5512, Plasmonics: Metallic Nanostructures and Their Optical Properties II; (2004) https://doi.org/10.1117/12.559432
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

The detailed theoretical analysis of the fine optical phenomena caused by surface plasmon polariton (SPP) excitation in a metallic film with weakly modulated dielectric permittivity is made for both symmetrical and nonsymmetrical dielectric arrangements. SPP modes in the film are close to those existing at an interface between metal and dielectric half spaces (these polaritons are weakly coupled under the symmetrical surrounding), and the effect of enhanced light transmission (ELT) caused by photon-SPP-photon transformations can occur. The advantage of the approach used is that we present the most interesting results in a simple analytical form. The dispersion relation for the film SPP for both arrangements is investigated. On this basis the comprehensive examination of the ELT effect is performed. The parameters of the problem (optimal film thickness, optimal modulation amplitude) responsible for total suppression of the zeroth- and/or nonzeroth-order reflected waves and maximal transmission are found. The results are of essential interest for optical nano-devices design.

Citation Download Citation

Alexandre Vladimirovich Kats and Alexey Yu Nikitin "Anomalous optical properties of absorptive modulated metal film under surface plasmon polariton excitation conditions", Proc. SPIE 5512, Plasmonics: Metallic Nanostructures and Their Optical Properties II, (19 October 2004); https://doi.org/10.1117/12.559432

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