Route to attosecond nonlinear spectroscopy

We demonstrate generation of coherent microjoule-scale, low-order harmonic supercontinua in the deep and vacuum ultraviolet (4-9 eV), resulting from the nonlinear transformations of near-single-cycle laser pulses in a gas cell. We show theoretically that their formation is connected to a novel nonli...

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Published inPhysical review letters Vol. 105; no. 24; p. 243902
Main Authors Reiter, F, Graf, U, Serebryannikov, E E, Schweinberger, W, Fiess, M, Schultze, M, Azzeer, A M, Kienberger, R, Krausz, F, Zheltikov, A M, Goulielmakis, E
Format Journal Article
LanguageEnglish
Published United States 10.12.2010
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Summary:We demonstrate generation of coherent microjoule-scale, low-order harmonic supercontinua in the deep and vacuum ultraviolet (4-9 eV), resulting from the nonlinear transformations of near-single-cycle laser pulses in a gas cell. We show theoretically that their formation is connected to a novel nonlinear regime, holding promise for the generation of powerful deep-UV and vacuum ultraviolet subfemtosecond pulses. Our work opens the route to pump-probe spectroscopy of subfemtosecond-scale valence-shell phenomena in atoms, molecules, and condensed matter.
ISSN:1079-7114
DOI:10.1103/PhysRevLett.105.243902