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Opt Express. 2009 May 11;17(10):8423-32.

Femtosecond surface plasmon interferometry.

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1
Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. temnov@mit.edu

Abstract

We demonstrate femtosecond plasmonic interferometry with a novel geometry. The plasmonic microinterferometer consists of a tilted slit-groove pair. This arrangement allows for (i) interferometric measurements at a single wavelength with a single microinterferometer and (ii) unambiguous discrimination between changes in real and imaginary parts of the metal dielectric function. The performance is demonstrated by monitoring the sub-picosecond dynamics of hot electrons in gold.

PMID:
19434176
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