Contribution to a conference proceedings

DESY-2014-02051

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Long-term stable, large-scale, optical timing distribution systems with sub-femtosecond timing stability

Peng, M. Y. (Corresponding author) ; Callahan, P. T. ; Nejadmalayeri, A. A. ; Kaertner, F.DESY*>CFEL* ; Ahmed, K. (.Extern*>CFEL* ; Valente, S.DESY*>CFEL* ; Xin, M.DESY*>CFEL* ; Fini, J. M. ; Grüner-Nielsen, L. ; Monberg, E. ; Yan, M. ; Battle, P. ; Roberts, T. D.

2013

Abstract: Sub-fs X-ray pulse generation in kilometre-scale FEL facilities will require sub-fs long-term timing stability between optical sources over kilometer distances. We present here key developments towards a completely fiber-coupled, pulsed optical timing distribution system capable of delivering such stability. First, we developed a novel 1.2-km dispersion-compensated, polarization- maintaining fiber link to eliminate drifts previously induced by polarization mode dispersion. Link stabilization for 16 days showed 0.6 fs RMS timing drift and during a 3-day interval only 0.13 fs drift. Second, we verified that ultralow-noise optical master oscillators for sub-fs timing distribution are available today; the measured jitter for two commercial femtosecond lasers is less than 70 as for frequencies above 1 kHz. Lastly, we fabricated a hybrid-integrated, balanced optical cross- correlator using PPKTP waveguides to eliminate alignment drifts and for future reduction of the link operation power by a factor of 10-100.

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Contributing Institute(s):

1. Ultrafast Lasers & X-rays Division (FS-CFEL-2)

Research Program(s):

1. Experiments at CFEL (POF2-544) (POF2-544)
2. 541 - Photons (POF2-541) (POF2-541)

Experiment(s):

1. Experiments at CFEL

Appears in the scientific report 2013

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Database coverage:

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