Role of propagating slit mode in enhanced transmission through slit arrays in a metallic films

Viktoriia Babicheva, Yuriy E. Lozovik

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The mechanisms responsible for enhanced transmission of electromagnetic wave through an array of subwavelength slits in a metallic film are analyzed. Theoretical model of the enhanced transmission which takes into account the penetration of electromagnetic field into real metal is developed. Semi-analytical model based on Fabry–Perot formula is considered. Comparison of theoretical model, semi-analytical model and results of numerical simulation of Maxwell equations in time-dependent form (FDTD method) for silver with various geometric parameters is presented. The roles of surface plasmons and plasmon localized along slits are studied.
Keyword: Enhanced transmission, Surface plasmons, Metallic gratings
Original languageEnglish
JournalOptical and Quantum Electronics
Volume41
Issue number4
Pages (from-to)299-313
ISSN0306-8919
DOIs
Publication statusPublished - 2010
Externally publishedYes

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