TITLE

Polarization-independent extraordinary optical transmission in one-dimensional metallic gratings with broad slits

AUTHOR(S)
Yuehui Lu; Min Hyung Cho; YoungPak Lee; Joo Yull Rhee
PUB. DATE
August 2008
SOURCE
Applied Physics Letters;8/11/2008, Vol. 93 Issue 6, p061102
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Extraordinary optical transmission (EOT) is achievable for transverse-magnetic polarization in one-dimensional metallic gratings with very narrow slits due to the excitation of coupled surface plasmon polaritons (SPPs). In contrast, SPP-produced EOT for transverse-electric (TE) polarized light is impossible because of the absence of SPPs for this polarization. However, TE-polarized EOT produced by trapped modes has been demonstrated. In this work, we reanalyze this phenomenon and apply it to gratings with broad slits (still in subwavelength) without the need for a specific dielectric filler in the grooves. The design proposed in this work simplifies and makes more practical the realization of gratings that possess polarization-independent EOT.
ACCESSION #
34000057

 

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