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<div><font face="Arial" size="+2" color="#000000">Seminar
on</font></div>
<div><font face="Arial" size="+2" color="#000000"><b>Modern Optics and
Spectroscopy</b></font></div>
<div><font face="Arial" size="+2" color="#000000">Hrvoje Petek,
University of Pittsburgh<br>
<br>
<i><b>Ultrafast imaging and control of plasma waves in Fermi
seas</b></i></font><br>
<font face="Arial" size="+2"
color="#000000"><i><b></b></i></font></div>
<div><font face="Arial" size="+2" color="#000000">May 3,
2005</font></div>
<div><font face="Arial" size="+2" color="#000000">12:00 - 1:00
p.m.</font><br>
<font face="Arial" size="+2" color="#000000"></font></div>
<div><font face="Arial" size="+2" color="#000000">Abstract<br>
<br>
Light interacting with nanostructured metals excites collective charge
density fluctuations known as surface plasmons (SP). Through
excitation of localized SP eigenmodes incident light is trapped on
nanometer spatial and femtosecond temporal scales and its field is
enhanced. Here we demonstrate 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 with
330-attoseconds/frame. </font></div>
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