Clocking Femtosecond X Rays
Abstract
Linear-accelerator-based sources will revolutionize ultrafast x-ray science due to their unprecedented brightness and short pulse duration. However, time-resolved studies at the resolution of the x-ray pulse duration are hampered by the inability to precisely synchronize an external laser to the accelerator. At the Sub-Picosecond Pulse Source at the Stanford Linear-Accelerator Center we solved this problem by measuring the arrival time of each high energy electron bunch with electro-optic sampling. This measurement indirectly determined the arrival time of each x-ray pulse relative to an external pump laser pulse with a time resolution of better than 60 fs rms.
- Publication:
-
Physical Review Letters
- Pub Date:
- March 2005
- DOI:
- 10.1103/PhysRevLett.94.114801
- Bibcode:
- 2005PhRvL..94k4801C
- Keywords:
-
- 41.60.Cr;
- 41.75.Ht;
- 42.65.Re;
- Free-electron lasers;
- Relativistic electron and positron beams;
- Ultrafast processes;
- optical pulse generation and pulse compression