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Authors: Andreas Trügler
Publish Date: 2016
Volume: , Issue: , Pages: 157-162
Abstract
The lightmatter interaction between metallic nanoparticles and an electromagnetic wave happens on a very fast time scale and as we have discussed in Sect 27 already after a few femtoseconds the plasmonic excitations start to vanish again The temporal evolution and this ultrafast relaxation of surface plasmon polaritons is of central importance for many kinds of plasmonic applications It is amazing that we can explore such rapid dynamic processes with experiments nowadays One way to enter the ultrafast world of plasmon dephasing is given by nonlinear autocorrelation measurements which allow us to determine sub10 fs decay times Usually a bandwidthlimited laser pulse working in the fewcycle regime is used to excite nonlinear effects which serve as a noninvasive monitor for the plasmon dynamics 1
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