Femtosecond Microscopy of Surface Plasmon Polariton Wave Packet Evolution at the Silver/Vacuum Interface

A movie of the dispersive and dissipative propagation of surface plasmon polariton (SPP) wave packets at a silver/vacuum interface is recorded by the interferometric time-resolved photoemission electron microscopy with 60 nm spatial resolution and 330 as frame interval. The evolution of SPP wave pac...

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Bibliographic Details
Published inNano letters Vol. 7; no. 2; pp. 470 - 475
Main Authors Kubo, Atsushi, Pontius, Niko, Petek, Hrvoje
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 01.02.2007
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Summary:A movie of the dispersive and dissipative propagation of surface plasmon polariton (SPP) wave packets at a silver/vacuum interface is recorded by the interferometric time-resolved photoemission electron microscopy with 60 nm spatial resolution and 330 as frame interval. The evolution of SPP wave packets is imaged through a two-path interference created by a pair of 10 fs phase correlated pump−probe light pulses at 400 nm. The wave packet evolution is simulated using the complex dielectric function of silver.
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ISSN:1530-6984
1530-6992
DOI:10.1021/nl0627846