Light-induced resonant transmittance through a gold film

Smolyaninov, Igor I.; Yu-Ju Hung; Davis, Christopher C.
July 2005
Applied Physics Letters;7/25/2005, Vol. 87 Issue 4, p041101
Academic Journal
We report the experimental observation of photoinduced resonant transmission of light through a gold film deposited on a chalcogenide glass surface. This effect is caused by the formation of a photoinduced diffraction grating in the chalcogenide glass near the gold film surface by an optical pump beam. The transmittance of a probe beam is resonantly enhanced due to grating-induced coupling to surface electromagnetic excitations on the gold film surface. This observation demonstrates the feasibility of all-optical signal processing using the extraordinary light transmission of thin metal films.


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