X-ray pulse preserving single-shot optical cross-correlation method for improved experimental temporal resolution

Journal Article · Mon Mar 19 04:00:00 EDT 2012 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3695164· OSTI ID:22025474

Beye, M ^[1]; Krupin, O ^[2]; European XFEL GmbH, 22607 Hamburg ^[3]; Hays, G; Jong, S de; Lee, S; Coffee, R; Holmes, M R; Fry, A R; White, W E; Bostedt, C; Schlotter, W F ^[2]; Reid, A H ^[1]; Rupp, D ^[4]; Lee, W -S; Scherz, A O ^[1]; Chuang, Y -D ^[5]; Cryan, J P; Glownia, J M ^[6]; Foehlisch, A ^[7] ; Durr, H A ^[1]

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1. SIMES, SLAC National Accelerator Laboratory, Menlo Park, California 94025 (United States)
2. LCLS, SLAC National Accelerator Laboratory, Menlo Park, California 94025 (United States)
3. Germany
4. Technische Universitaet Berlin, 10623 Berlin (Germany)
5. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
6. PULSE, SLAC National Accelerator Laboratory, Menlo Park, California 94025 (United States)
7. Helmholtz-Zentrum Berlin fuer Materialien und Energie GmbH, 12489 Berlin (Germany)

We measured the relative arrival time between an optical pulse and a soft x-ray pulse from a free-electron laser. This femtosecond cross-correlation measurement was achieved by observing the change in optical reflectivity induced through the absorption of a fraction of the x-ray pulse. The main x-ray pulse energy remained available for an independent pump-probe experiment where the sample may be opaque to soft x-rays. The method was employed to correct the two-pulse delay data from a canonical pump-probe experiment and demonstrate 130 {+-} 20 fs (FWHM) temporal resolution. We further analyze possible timing jitter sources and point to future improvements.

• OSTI ID: 22025474
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 12 Vol. 100; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
CORRELATIONS
FREE ELECTRON LASERS
LASER RADIATION
PROBES
PULSES
REFLECTIVITY
SOFT X RADIATION
TIME RESOLUTION
VISIBLE RADIATION