5-Femtosecond Laser-Electron Synchronization for Pump-Probe Crystallography and Diffraction

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For improving the temporal resolution in ultrafast pump-probe electron or x-ray diffraction, we report a laser-electron synchronization concept via direct microwave extraction from the laser frequency comb combined with phase detection by fiber-loop interferometry, in situ drift correction via electron-energy analysis, and laser-electron streaking for final timing metrology. We achieve a laser-electron jitter below 5 fs (rms) integrated between 8 min and Nyquist period (400 ns). Slower drifts are also below 5 fs (rms) after active compensation. This result helps advance femtosecond crystallography with electrons or x rays to the regime of fundamental atomic-scale dynamics and light-matter interaction.
Publisher
AMER PHYSICAL SOC
Issue Date
2015-10
Language
English
Article Type
Article
Keywords

OPTICAL PULSE TRAINS; ULTRAFAST DIFFRACTION; ULTRABRIGHT ELECTRONS; ATOMIC MOTIONS; PHASE NOISE; FEMTOSECOND; FS; OSCILLATORS; COMPRESSION; SUPPRESSION

Citation

PHYSICAL REVIEW APPLIED, v.4, no.4

ISSN
2331-7019
DOI
10.1103/PhysRevApplied.4.044013
URI
http://hdl.handle.net/10203/203671
Appears in Collection
ME-Journal Papers(저널논문)
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