Polarization control with an X-ray phase retarder for high-time-resolution pump-probe experiments at SACLA.
J Synchrotron Radiat
; 26(Pt 4): 1139-1143, 2019 Jul 01.
Article
in En
| MEDLINE
| ID: mdl-31274437
ABSTRACT
Control of the polarization of an X-ray free-electron laser (XFEL) has been performed using an X-ray phase retarder (XPR) in combination with an arrival timing diagnostic on BL3 of the SPring-8 Angstrom Compact free-electron LAser (SACLA). To combine with the timing diagnostic, a pink beam was incident on the XPR crystal and then monochromated in the vicinity of samples. A high degree of circular polarization of â¼97% was obtained experimentally at 11.567â
keV, which agreed with calculations based on the dynamical theory of X-ray diffraction. This system enables pump-probe experiments to be operated using circular polarization with a time resolution of 40â
fs to investigate ultrafast magnetic phenomena.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
J Synchrotron Radiat
Journal subject:
RADIOLOGIA
Year:
2019
Type:
Article
Affiliation country:
Japan