Plasmon-Polariton Waves in Nanofilms on One-Dimensional Photonic Crystal Surfaces

The propagation of bound optical waves along the surface of a one-dimensional (1-D) photonic crystal (PC) structure is considered. A unified description of the waves in 1-D PCs for both s- and p-polarizations is done via an impedance approach. A general dispersion relation that is valid for optical...

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Bibliographic Details
Published in:arXiv.org 2010-05
Main Author: Konopsky, Valery N
Format: Article
Language:English
Subjects:
Crystal structure
Crystal surfaces
Photonic crystals
Polaritons
Propagation
Surface waves
Wave propagation
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Summary:The propagation of bound optical waves along the surface of a one-dimensional (1-D) photonic crystal (PC) structure is considered. A unified description of the waves in 1-D PCs for both s- and p-polarizations is done via an impedance approach. A general dispersion relation that is valid for optical surface waves with both polarizations is obtained, and conditions are presented for long-range propagation of plasmon-polariton waves in nanofilms (including lossy ones) deposited on the top of the 1-D PC structure. A method is described for designing 1-D PC structures to fulfill the conditions required for the existence of the surface mode with a particular wavevector at a particular wavelength. It is shown that the propagation length of the long-range surface plasmon-polaritons can be maximized by wavelength tuning, which introduces a slight asymmetry in the system.
ISSN:2331-8422
DOI:10.48550/arxiv.1005.2039