Banzer, Peter; Kindler, Jochen; Quabis, Susanne; Peschel, Ulf; Leuchs, Gerd (2010). Extraordinary transmission through a single coaxial aperture in a thin metal film. Optics express, 18(10), pp. 10896-904. Washington, D.C.: Optical Society of America 10.1364/OE.18.010896
Full text not available from this repository.We investigate experimentally the transmission properties of single sub-wavelength coaxial apertures in thin metal films (t = 110 nm). Enhanced transmission through a single sub-wavelength coaxial aperture illuminated with a strongly focused radially polarized light beam is reported. In our experiments we achieved up to four times enhanced transmission through a single coaxial aperture as compared to a (hollow) circular aperture with the same outer diameter.We attribute this enhancement of transmission to the excitation of a TEM-mode for illumination with radially polarized light inside the single coaxial aperture. A strong polarization contrast is observed between the transmission for radially and azimuthally polarized illumination. Furthermore, the observed transmission through a single coaxial aperture can be strongly reduced if surface plasmons are excited. The experimental results are in good agreement with finite difference time domain (FDTD) simulations.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Neurology |
UniBE Contributor: |
Kindler, Jochen |
ISSN: |
1094-4087 |
Publisher: |
Optical Society of America |
Language: |
English |
Submitter: |
Factscience Import |
Date Deposited: |
04 Oct 2013 14:14 |
Last Modified: |
05 Dec 2022 14:02 |
Publisher DOI: |
10.1364/OE.18.010896 |
PubMed ID: |
20588945 |
Web of Science ID: |
000277560000117 |
URI: |
https://boris.unibe.ch/id/eprint/3365 (FactScience: 207034) |
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