Open AccessAll fiber-coupled, long-term stable timing distribution for free-electron lasers with few-femtosecond jitter
Author(s) -
Kemal Şafak,
Ming Xin,
Patrick T. Callahan,
Michael Y. Peng,
Franz X. Kärtner
Publication year - 2015
Publication title -
structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.415
H-Index - 29
ISSN - 2329-7778
DOI - 10.1063/1.4922747
Subject(s) - jitter , femtosecond , fiber laser , laser , synchronization (alternating current) , optics , optical fiber , computer science , noise (video) , materials science , physics , electronic engineering , telecommunications , engineering , channel (broadcasting) , artificial intelligence , image (mathematics)
We report recent progress made in a complete fiber-optic, high-precision, long-term stable timing distribution system for synchronization of next generation X-ray free-electron lasers. Timing jitter characterization of the master laser shows less than 170-as RMS integrated jitter for frequencies above 10 kHz, limited by the detection noise floor. Timing stabilization of a 3.5-km polarization-maintaining fiber link is successfully achieved with an RMS drift of 3.3 fs over 200 h of operation using all fiber-coupled elements. This all fiber-optic implementation will greatly reduce the complexity of optical alignment in timing distribution systems and improve the overall mechanical and timing stability of the system