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OnderzoekVan Swinderen Institute

Physics: prof. dr. M. Vrakking, AMOLF Amsterdam: Attosecond Time-resolved Electron Dynamics

Roster

WhenWhere
19 February 2009 FWN-Building 5111.0080, Nijenborgh 4, 9747 AG, Groningen
Speaker: Physics: prof. dr. M. Vrakking
Affiliation: AMOLF Amsterdam
Title: Attosecond Time-resolved Electron Dynamics 
Date: 19-02-2009
Start: 16.00
Location: FWN-Building 5111.0080

Abstract

In the last few years, first experiments have been performed where attosecond laser pulses have been used to study time-resolved electron dynamics. So far, these experiments have been two-color XUV+IR experiments, where attosecond time-resolution was achieved by attosecond IR streaking 1 (appropriate for continuum electron dynamics) and by use of the sub-cycle time-dependence of IR (multi-photon) ionization. 2 We have recently introduced two new methods that I will discuss in my talk, namely

1)                  angle- and energy-resolved measurements of the interference of an electron wave packet to be characterized with a continuum “reference” wavepacket, 3 and

2)                  (in molecules) a measurement of asymmetries in the ejection of charged fragments (indicative of localization of electrons in the molecule at the time of dissociation). 4

Method 1 was demonstrated in experiments on the photo-ionization of Helium. 3 Method 2 was demonstrated in a pump-probe experiment on the H2 molecule. 4 In my colloquium I will discuss these two experiments, as well as the further prospects for the application of attosecond laser pulses towards the time-resolved measurement of electron dynamics.

 

Last modified:12 September 2014 11.21 a.m.