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Related Experiment Videos

Clocking femtosecond X rays.

A L Cavalieri1, D M Fritz, S H Lee

  • 1FOCUS Center, Departments of Physics and Applied Physics Program, University of Michigan, Ann Arbor, MI 48109, USA.

Physical Review Letters
|May 21, 2005
PubMed
Summary

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This summary is machine-generated.

Synchronizing external lasers with ultrafast X-ray pulses from linear accelerators is now possible. Electro-optic sampling precisely measures electron bunch arrival times, enabling high-resolution time-resolved studies.

Area of Science:

  • Ultrafast science
  • X-ray science
  • Accelerator physics

Background:

  • Linear-accelerator-based X-ray sources offer high brightness and short pulses.
  • Precise synchronization of external lasers to X-ray pulses is crucial for time-resolved studies but technically challenging.

Purpose of the Study:

  • To develop a method for precisely synchronizing external lasers to ultrafast X-ray pulses from linear accelerators.
  • To enable time-resolved studies with resolution matching X-ray pulse duration.

Main Methods:

  • Utilized electro-optic sampling to measure the arrival time of individual high-energy electron bunches.
  • Developed a technique to indirectly determine X-ray pulse arrival times relative to a pump laser.

Main Results:

Related Experiment Videos

  • Achieved precise synchronization between electron bunches and the external laser.
  • Demonstrated a time resolution of better than 60 fs root mean square (rms) for X-ray pulse arrival time measurement.

Conclusions:

  • The developed method overcomes synchronization limitations in ultrafast X-ray science.
  • Enables advanced time-resolved experiments with unprecedented temporal resolution.