Channel plasmon-polariton modes in V grooves filled with dielectric

Vernon, K. C., Gramotnev, D. K., & Pile, D. F. P. (2008) Channel plasmon-polariton modes in V grooves filled with dielectric. Journal of Applied Physics, 103(3), pp. 1-6.

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Abstract

We investigated the effect of dielectric filling in a V groove on the propagation parameters of channel plasmon-polariton (CPP) modes. In particular, existence conditions and critical groove angles, mode localization, field structure, dispersion, and propagation distances of CPP modes are analyzed as functions of dielectric permittivity inside the groove. It is demonstrated that increasing dielectric permittivity in the groove results in a rapid increase of mode localization near the tip of the groove and increase of both the critical angles that determine a range of groove angles for which CPP modes can exist. Detailed analysis of the field structure has demonstrated that the maximum of the field in a CPP mode is typically reached at a small distance from the tip of the groove. The effect of rounded tip is also investigated.

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29 citations in Web of Science®

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ID Code: 40600
Item Type: Journal Article
Refereed: Yes
Keywords: localised modes, nanostructured materials, permittivity, plasmons, polaritons
DOI: 10.1063/1.2832441
ISSN: 0021-8979
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Past > Schools > Physics
Copyright Owner: Copyright 2008 American Institute of Physics
Deposited On: 09 Mar 2011 02:07
Last Modified: 30 Jun 2014 02:20

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