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Title: Practical application of cross correlation technique to measure jitter of master-oscillator-power-amplifier laser system

The Linac coherent light source (LCLS) at the SLAC National Accelerator Laboratory (SLAC) is the world’s first hard X-ray free electron laser (XFEL) and is capable of producing high-energy, femtosecond duration X-ray pulses. A common technique to study fast timescale physical phenomena, various “pump/probe” techniques are used. In these techniques there are two lasers, one optical and one X-ray, that work as a pump and as a probe to study dynamic processes in atoms and molecules. In order to resolve phenomena that occur on femtosecond timescales, it is imperative to have very precise timing between the optical lasers and X-rays (on the order of ~ 20 fs or better). The lasers are synchronized to the same RF source that drives the accelerator and produces the X-ray laser. However, elements in the lasers cause some drift and time jitter, thereby de-synchronizing the system. This paper considers cross-correlation technique as a way to quantify the drift and jitter caused by the regenerative amplifier of the ultrafast optical laser.
 [1] ;  [2] ;  [3] ;  [3] ;  [4]
  1. Military University of Technology, Warsaw (Poland)
  2. University of Technology, Cracow (Poland)
  3. SLAC National Accelerator Laboratory, Menlo Park, CA (United States)
  4. Univ. of California Santa Cruz, Santa Cruz, CA (United States)
Publication Date:
OSTI Identifier:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Opto-Electronics Review; Journal Volume: 22; Journal Issue: 4
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
jitter; cross-correlation; laser amplifier; pump-and-probe technique