High-precision time delay control with continuous phase shifter for pump-probe experiments using synchrotron radiation pulses

Yoshihito Tanaka, Takashi Ohshima, Yoshimitsu Fukuyama, Nobuhiro Yasuda, Jungeun Kim, Hitoshi Osawa, Shigeru Kimura, Tadashi Togashi, Toru Hara, Hayato Kamioka, Yutaka Moritomo, Hitoshi Tanaka, Masaki Takata, Hidetoshi Sengoku, Eiji Nonoshita

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Brilliant pulsed x-ray synchrotron radiation (SR) is useful for pump-probe experiment such as time-resolved x-ray diffraction, x-ray absorption fine structure, and x-ray spectroscopy. For laser pump-SR x-ray probe experiments, short pulsed lasers are generally synchronized to the SR master oscillator controlling the voltage for acceleration of electron bunches in an accelerator, and the interval between the laser and the SR pulses is changed around the time scale of target phenomenon. Ideal delay control produces any time delay as keeping the time-precision and pointing-stability of optical pulses at a sample position. We constructed the time delay control module using a continuous phase shifter of radio frequency signal and a frequency divider, which can produce the delayed trigger pulses to the laser without degradation of the time precision and the pointing stability. A picoseconds time-resolved x-ray diffraction experiment was demonstrated at SPring-8 storage ring for fast lattice response by femtosecond pulsed laser irradiation, and suggested the possibility of accurate sound velocity measurement. A delay control unit operating with subpicosecond precision has also been designed for femtosecond pump-probe experiments using a free electron laser at SPring-8 campus.

Original languageEnglish
Title of host publicationSRI 2009 - The 10th International Conference on Synchrotron Radiation Instrumentation
Pages951-954
Number of pages4
DOIs
Publication statusPublished - 2010 Aug 3
Externally publishedYes
Event10th International Conference on Synchrotron Radiation Instrumentation, SRI 2009 - Melbourne, VIC, Australia
Duration: 2009 Sep 272009 Oct 2

Publication series

NameAIP Conference Proceedings
Volume1234
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other10th International Conference on Synchrotron Radiation Instrumentation, SRI 2009
CountryAustralia
CityMelbourne, VIC
Period09/9/2709/10/2

Keywords

  • Pump-probe measurement
  • Time-resolved technique
  • X-ray diffraction

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Tanaka, Y., Ohshima, T., Fukuyama, Y., Yasuda, N., Kim, J., Osawa, H., Kimura, S., Togashi, T., Hara, T., Kamioka, H., Moritomo, Y., Tanaka, H., Takata, M., Sengoku, H., & Nonoshita, E. (2010). High-precision time delay control with continuous phase shifter for pump-probe experiments using synchrotron radiation pulses. In SRI 2009 - The 10th International Conference on Synchrotron Radiation Instrumentation (pp. 951-954). (AIP Conference Proceedings; Vol. 1234). https://doi.org/10.1063/1.3463375