Time delay measurement in the frequency domain
- Purdue Univ., West Lafayette, IN (United States). Dept. of Physics and Astronomy.
- Argonne National Lab., Argonne, IL (United States). Advanced Photon Source.
Pump–probe studies at synchrotrons using X-ray and laser pulses require accurate determination of the time delay between pulses. This becomes especially important when observing ultrafast responses with lifetimes approaching or even less than the X-ray pulse duration (~100 ps). The standard approach of inspecting the time response of a detector sensitive to both types of pulses can have limitations due to dissimilar pulse profiles and other experimental factors. Here, a simple alternative is presented, where the frequency response of the detector is monitored versus time delay. Measurements readily demonstrate a time resolution of ~1 ps. Improved precision is possible by simply extending the data acquisition time.
- Research Organization:
- Argonne National Laboratory, Chicago, IL (United States). Advanced Photon Source.
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- SC0004078; AC02-06CH11357
- OSTI ID:
- 1212890
- Journal Information:
- Journal of Synchrotron Radiation (Online), Vol. 22, Issue 5; ISSN 1600-5775
- Publisher:
- International Union of CrystallographyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Similar Records
Towards efficient time-resolved X-ray absorption studies of electron dynamics at photocatalytic interfaces
Development of high-repetition-rate laser pump/x-ray probe methodologies for synchrotron facilities