A high‐power, high‐repetition‐rate THz source for pump–probe experiments at Linac Coherent Light Source II

Experiments using a THz pump and an X‐ray probe at an X‐ray free‐electron laser (XFEL) facility like the Linac Coherent Light Source II (LCLS II) require frequency‐tunable (3 to 20 THz), narrow bandwidth (∼10%), carrier‐envelope‐phase‐stable THz pulses that produce high fields (>1 MV cm−1) at the...

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Veröffentlicht in:Journal of synchrotron radiation Jg. 27; H. 4; S. 890 - 901
Hauptverfasser: Zhang, Z., Fisher, A. S., Hoffmann, M. C., Jacobson, B., Kirchmann, P. S., Lee, W.-S., Lindenberg, A., Marinelli, A., Nanni, E., Schoenlein, R., Qian, M., Sasaki, S., Xu, J., Huang, Z.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: 5 Abbey Square, Chester, Cheshire CH1 2HU, England International Union of Crystallography 01.07.2020
John Wiley & Sons, Inc
Schlagworte:
Coherent light
ENGINEERING
femtosecond
Light sources
pump–probe
Repetition
Research Papers
synchronization
THz
Transportation systems
XFEL
synchronization
pump–probe
XFEL
femtosecond
THz
ISSN:1600-5775, 0909-0495, 1600-5775
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Zusammenfassung:Experiments using a THz pump and an X‐ray probe at an X‐ray free‐electron laser (XFEL) facility like the Linac Coherent Light Source II (LCLS II) require frequency‐tunable (3 to 20 THz), narrow bandwidth (∼10%), carrier‐envelope‐phase‐stable THz pulses that produce high fields (>1 MV cm−1) at the repetition rate of the X‐rays and are well synchronized with them. In this paper, a two‐bunch scheme to generate THz radiation at LCLS II is studied: the first bunch produces THz radiation in an electromagnet wiggler immediately following the LCLS II undulator that produces X‐rays from the second bunch. The initial time delay between the two bunches is optimized to compensate for the path difference in THz transport. The two‐bunch beam dynamics, the THz wiggler and radiation are described, as well as the transport system bringing the THz pulses from the wiggler to the experimental hall. A two‐bunch scheme to generate high‐power, high‐repetition‐rate THz radiation for pump–probe experiments at LCLS II is studied. The two‐bunch beam dynamics, the THz wiggler and radiation are described, as well as the transport system bringing the THz pulses from the wiggler to the X‐ray experimental hall.
Bibliographie:ObjectType-Article-1
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USDOE Office of Science (SC), Basic Energy Sciences (BES)
AC02-76SF00515; AC02-06CH11357
ISSN:1600-5775
0909-0495
1600-5775
DOI:10.1107/S1600577520005147