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- Title
Single-shot arrival timing diagnostics for a soft X-ray free-electron laser beamline at SACLA.
- Authors
Owada, Shigeki; Nakajima, Kyo; Togashi, Tadashi; Kayatama, Tetsuo; Yabashi, Makina
- Abstract
Arrival timing diagnostics performed at a soft X-ray free-electron laser (FEL) beamline of SACLA are described. Intense soft X-ray FEL pulses with onedimensional focusing efficiently induce transient changes of optical reflectivity on the surface of GaAs. The arrival timing between soft X-ray FEL and optical laser pulses was successfully measured as a spatial position of the reflectivity change. The temporal resolution evaluated from the imaging system reaches ~10 fs. This method requires only a small portion of the incident pulse energy, which enables the simultaneous operation of the arrival timing diagnostics and experiments by introducing a wavefront-splitting scheme.
- Subjects
FREE electron lasers; OPTICAL reflection; LASER pulses; LASER beams; ELECTROMAGNETIC wave reflection; WAVEFRONTS (Optics); REFLECTANCE
- Publication
Journal of Synchrotron Radiation, 2018, Vol 25, Issue 1, p1
- ISSN
0909-0495
- Publication type
Article
- DOI
10.1107/S1600577517015284