Time-frequency characterization of high-order harmonic pulses

Rodrigo Lopez, Johan Mauritsson, Allan Johansson, Johan Norin, Anne L'Huillier

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Abstract

We present energy-resolved cross-correlation measurements of extreme ultraviolet (XUV) pulses generated as high harmonics of femtosecond pulses from a 1 kHz titanium-sapphire laser. The harmonic pulses are probed by a fraction of the fundamental laser pulse at 800 nm, in a noncollinear geometry, allowing us to vary independently the parameters of the harmonic pump and near-infrared probe pulses. We measure the so-called "sidebands" in the photoelectron spectrum of argon corresponding to the absorption of a harmonic photon plus or minus one probe photon. Spectrally resolving the cross-correlation signal allows us to characterize the time-dependent frequency of the XUV pulse.
Original languageEnglish
Pages (from-to)105-109
JournalEuropean Physical Journal D. Atomic, Molecular, Optical and Plasma Physics
Volume26
Issue number1
DOIs
Publication statusPublished - 2003

Subject classification (UKÄ)

  • Atom and Molecular Physics and Optics

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