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 language | English |
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| Pages (from-to) | 105-109 |
| Number of pages | 5 |
| Journal | European Physical Journal D |
| Volume | 26 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1 Jan 2003 |
| Externally published | Yes |