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May 1, 2000 / Vol. 25, No. 9 / OPTICS LETTERS 595 Surface-plasmon-assisted resonant tunneling of light through
 

Summary: May 1, 2000 / Vol. 25, No. 9 / OPTICS LETTERS 595
Surface-plasmon-assisted resonant tunneling of light through
a periodically corrugated thin metal film
Ivan Avrutsky, Yang Zhao, and Vladimir Kochergin
Department of Electrical and Computer Engineering, Wayne State University, Detroit, Michigan 48202
Received January 7, 2000
We present experimental results and a numerical model confirming that surface plasmons can resonantly
enhance light transmission through a corrugated metal film. A new interpretation in terms of plasmon-
assisted light tunneling is given to recent experiments on light penetration through periodic subwavelength
holes in a thin metal film. We designed a narrow-band filter suitable for applications in optical communication
by optimizing the film and the grating parameters. 2000 Optical Society of America
OCIS codes: 050.2770, 050.1940, 130.2790, 310.6860.
It was found in recent experiments that light can have
extraordinarily high transmission through a periodic
set of tiny holes in a thin metal layer.1 3
In these
experiments, ion-beam lithography was used to pre-
pare 150-nm holes in a 200-nm silver film. Trans-
mission as high as 10% was observed when the holes
covered only 5% of total area. The locations of trans-

  

Source: Avrutsky, Ivan - Department of Electrical and Computer Engineering, Wayne State University

 

Collections: Engineering