Clocking femtosecond X rays.
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.
Cavalieri
A L
AL
FOCUS Center, Departments of Physics and Applied Physics Program, University of Michigan, Ann Arbor, MI 48109, USA.
Fritz
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Lee
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Bucksbaum
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Reis
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Rudati
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Mills
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Stephenson
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Kao
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Blome
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Ischebeck
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Schneider
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Hignette
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Chapman
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Gaffney
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