AVS 53rd International Symposium
    Ultra-Bright Light Sources Topical Conference Wednesday Sessions
       Session UB-WeA

Invited Paper UB-WeA7
High Harmonics of Ultrashort Laser Pulses as Coherent Soft X-Ray Source for Attosecond Time Resolved Photoemission Spectroscopy

Wednesday, November 15, 2006, 4:00 pm, Room 2001

Session: Ultra-Bright Light Sources Topical Conference
Presenter: U. Heinzmann, Universität Bielefeld, Germany
Correspondent: Click to Email
The combination of the comb of high harmonics of a phase-stabilized ultrashort laser pulse focussed into a rare gas atomic beam@footnote 1@ with an optimized multilayer mirror system as soft x-ray monochromator@footnote 2@ yields isolated soft x-ray pulses of 200 attoseconds duration.@footnote 3@ Thus photoelectron and Auger electron emission processes have been studied time resolved with a fs and even sub-fs time resolution, which is needed to observe the dynamics of atomic and molecular decay processes.@footnote 4,5@ The report reviews the experimental techniques of production and analysis of the ultrashort pulses, presents recently performed pump-probe photoionization and photodissociation processes and discusses its application to condensed matter studies. @FootnoteText@ @footnote 1@ R. Kienberger et al. Nature 427, 817 (2004)@footnote 2@ A. Wonisch et al. Applied Optics 45, No 17 (2006)@footnote 3@ E. Goulielmakis et al. Science 305, 1267 (2004)@footnote 4@ M. Drescher et al. Nature 419, 803 (2002)@footnote 5@ P. Siffalovic et al. J. Biotechn. 112, 139 (2004).