Femtosecond Microscopy of Surface Plasmon Polariton Wave Packet Evolution at the Silver/Vacuum Interface
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- 19 January 2007
- journal article
- letter
- Published by American Chemical Society (ACS) in Nano Letters
- Vol. 7 (2) , 470-475
Abstract
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.Keywords
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