Clocking Femtosecond X Rays

A. L. Cavalieri et al.
Phys. Rev. Lett. 94, 114801 – Published 24 March 2005

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.

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  • Received 2 November 2004

DOI:https://doi.org/10.1103/PhysRevLett.94.114801

©2005 American Physical Society

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Vol. 94, Iss. 11 — 25 March 2005

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