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Proceedings Paper

A 20fs synchronization system for lasers and cavities in accelerators and FELs
Author(s): R. B. Wilcox; J. M. Byrd; L. R. Doolittle; G. Huang; J. W. Staples
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Paper Abstract

A fiber-optic RF distribution system has been developed for synchronizing lasers and RF plants in short pulse FELs. Typical requirements are 50-100fs rms over time periods from 1ms to several hours. Our system amplitude modulates a CW laser signal, senses fiber length using an interferometer, and feed-forward corrects the RF phase digitally at the receiver. We demonstrate less than 15fs rms error over 12 hours, between two independent channels with a fiber path length difference of 200m and transmitting S-band RF. The system is constructed using standard telecommunications components, and uses regular telecom fiber.

Paper Details

Date Published: 17 February 2010
PDF: 8 pages
Proc. SPIE 7581, High Energy/Average Power Lasers and Intense Beam Applications IV, 75810O (17 February 2010); doi: 10.1117/12.846253
Show Author Affiliations
R. B. Wilcox, Lawrence Berkeley National Lab. (United States)
J. M. Byrd, Lawrence Berkeley National Lab. (United States)
L. R. Doolittle, Lawrence Berkeley National Lab. (United States)
G. Huang, Lawrence Berkeley National Lab. (United States)
J. W. Staples, Lawrence Berkeley National Lab. (United States)


Published in SPIE Proceedings Vol. 7581:
High Energy/Average Power Lasers and Intense Beam Applications IV
Steven J. Davis; Michael C. Heaven; J. Thomas Schriempf, Editor(s)

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