Extraordinary transmission through a single coaxial aperture in a thin metal film

Details Extraordinary transmission through a single coaxial aperture in a thin metal film Extraordinary transmission through a single coaxial aperture in a thin metal film

2010-04-15

arxiv.org/abs/1004.2645v1

Physics

Optics

9 pages, 5 figures, accepted by Optics Express

Scientific paper

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.

Affiliated with

Also associated with

No associations

Rating

Extraordinary transmission through a single coaxial aperture in a thin metal film does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Extraordinary transmission through a single coaxial aperture in a thin metal film, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extraordinary transmission through a single coaxial aperture in a thin metal film will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-380217