Abstract
X-ray-optical pump-probe experiments at the Linac Coherent Light Source (LCLS) have so far been limited to a time resolution of 280 fs fwhm due to timing jitter between the accelerator-based free-electron laser (FEL) and optical lasers. We have implemented a single-shot cross-correlator for femtosecond x-ray and infrared pulses. A reference experiment relying only on the pulse arrival time information from the cross-correlator shows a time resolution better than 50 fs fwhm (22 fs rms) and also yields a direct measurement of the maximal x-ray pulse length. The improved time resolution enables ultrafast pump-probe experiments with x-ray pulses from LCLS and other FEL sources.
Original language | English (US) |
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Article number | 121107 |
Journal | Applied Physics Letters |
Volume | 100 |
Issue number | 12 |
DOIs | |
State | Published - Mar 19 2012 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)