On-line diagnostic tool for measurement of the time delay between two ultrashort light pulses
Author
Summary, in English
Ultrafast accelerator-based sources combined with synchronized femtosecond lasers are currently being developed. The method described here is intended as a jitter monitor at such facilities. We report on the possibility of extracting a time-offset signal between two different synchronized ultrashort light pulses. The method is based on sum-frequency generation in a nonlinear crystal. Aiming at extracting the time-difference from visible pulsed radiation from an x-ray undulator and femtosecond laser pulses we are investigating the possibility of obtaining timing information when one of the two pulses is very weak (10(6) photons/pulse). This will enable on-line monitoring of the relative timing of an accelerator-based free-electron laser and a synchronized visible laser. The spatial position of the sum-frequency mixed region is registered using a position sensitive detector (PSD). We show that for an 80 fs light source the described electronic equipment is capable of delivering a signal proportional to the temporal shift of different ultrashort light pulses with an accuracy of approximately 30 fs in a time interval of several ps.
Department/s
Publishing year
2004
Language
English
Pages
1762-1767
Publication/Series
Measurement Science & Technology
Volume
15
Issue
9
Full text
- Available as PDF - 165 kB
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Document type
Journal article
Publisher
IOP Publishing
Topic
- Atom and Molecular Physics and Optics
- Subatomic Physics
Keywords
- position sensitive detector
- femtosecond laser
- detector calibration
- auto/cross correlator
- synchronization
- time-resolved pump-probe
- experiments
Status
Published
ISBN/ISSN/Other
- ISSN: 0957-0233