Femtosecond imaging of surface plasmon dynamics in a nanostructured silver film.
Light interacting with nanostructured metals excites the collective charge density fluctuations known as surface plasmons (SP). Through excitation of the localized SP eigenmodes incident light is trapped on the nanometer spatial and femtosecond temporal scales and its field is enhanced. Here we demonstrate the imaging and quantum control of SP dynamics in a nanostructured silver film. By inducing and imaging the nonlinear two-photon photoemission from the sample with a pair of identical 10-fs laser pulses while scanning the pulse delay, we record a movie of SP fields at a rate of 330-attoseconds/frame.
Kubo
Atsushi
A
Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA.
Onda
Ken
K
Petek
Hrvoje
H
Sun
Zhijun
Z
Jung
Yun S
YS
Kim
Hong Koo
HK
D004583:Electrons; D007700:Kinetics; D007834:Lasers; D008027:Light; D008854:Microscopy, Electron; D008855:Microscopy, Electron, Scanning; D036103:Nanotechnology / Q000379:methods*; D009991:Oscillometry; D017785:Photons; D012834:Silver / Q000737:chemistry*; D013053:Spectrophotometry; D020349:Surface Plasmon Resonance / Q000379:methods*; D013997:Time Factors
D012834:Silver