Electro-optic technique with improved time resolution for real-time, nondestructive, single-shot measurements of femtosecond electron bunch profiles

Electro-optic detection of the Coulomb field of a relativistic electron bunch combined with single-shot cross correlation of optical pulses is used to enable single-shot measurements of the shape and length of femtosecond electron bunches. This method overcomes a fundamental time-resolution limit of...

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Bibliographic Details
Published in:Physical review letters 2004-09, Vol.93 (11), p.114802.1-114802.4, Article 114802
Main Authors: BERDEN, G, JAMISON, S. P, MACLEOD, A. M, GILLESPIE, W. A, REDLICH, B, VAN DER MEER, A. F. G
Format: Article
Language:English
Subjects:
Charged-particle beams
Electromagnetism
electron and ion optics
Exact sciences and technology
Free-electron lasers
Fundamental areas of phenomenology (including applications)
Physics
Radiation by moving charges
Relativistic electron and positron beams
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Summary:Electro-optic detection of the Coulomb field of a relativistic electron bunch combined with single-shot cross correlation of optical pulses is used to enable single-shot measurements of the shape and length of femtosecond electron bunches. This method overcomes a fundamental time-resolution limit of previous single-shot electro-optic measurements, which arises from the inseparability of time and frequency properties of the probing optical pulse. Using this new technique we have made real-time measurements of a 50 MeV electron bunch, observing the profile of 650 fs FWHM ( approximately 275 fs rms) long bunches.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.93.114802