Femtosecond profiling of shaped x-ray pulses
Arbitrary manipulation of the temporal and spectral properties of x-ray pulses at free-electron lasers would revolutionize many experimental applications. At the Linac Coherent Light Source at Stanford National Accelerator Laboratory, the momentum phase-space of the free-electron laser driving electron bunch can be tuned to emit a pair of x-ray pulses with independently variable photon energy and femtosecond delay. However, while accelerator parameters can easily be adjusted to tune the electron bunch phase-space, the final impact of these actuators on the x-ray pulse cannot be predicted with sufficient precision. Furthermore, shot-to-shot instabilities that distort the pulse shape unpredictably cannot be fully suppressed. Therefore, the ability to directly characterize the x-rays is essential to ensure precise and consistent control. In this work, we have generated x-ray pulse pairs via electron bunch shaping and characterized them on a single-shot basis with femtosecond resolution through time-resolved photoelectron streaking spectroscopy. This achievement completes an important step toward future x-ray pulse shaping techniques.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division; Science Foundation Ireland (SFI); European Union (EU); Volkswagen Foundation; Friedrich-Alexander-Univ. Erlangen-Nürnberg (FAU), Erlangen (Germany). Bavaria California Technology Center (BaCaTeC); National Science Foundation (NSF); National Research Foundation of Korea (NRF); German Research Foundation (DFG); German Federal Ministry of Education and Research (BMBF)
- Grant/Contract Number:
- FPA-2012-0033; 1231306; PHY-1004778; 2014M1A7A1A01030128; 2014M3C1A8048818; 2016K1A3A7A09005386; 12/IA/1742; AC02-76SF00515; FG02-04ER15614; AC02-06CH11357; SFB925/A1.ARM; BMBF-05K16GU2
- OSTI ID:
- 1437842
- Alternate ID(s):
- OSTI ID: 1436472; OSTI ID: 1462712
- Journal Information:
- New Journal of Physics, Journal Name: New Journal of Physics Vol. 20 Journal Issue: 3; ISSN 1367-2630
- Publisher:
- IOP PublishingCopyright Statement
- Country of Publication:
- United Kingdom
- Language:
- English
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