Response-time improved hydrothermal-method-grown ZnO scintillator for soft x-ray free-electron laser timing-observation.
For pump and probe experiments in x-ray free-electron laser (XFEL) facilities, accurate timing synchronization between short-wavelength femtosecond pulses from XFELs and short optical pulses from other light sources is required. For this purpose, the response time of a hydrothermal-method-grown ZnO is improved by over one order of magnitude via intentional iron ion doping. The fluorescence rise- and decay-time constants are measured to be less than 10 and 100 ps, respectively. Owing to its intense fluorescence even for single pulse XFEL excitation, the timing jitter of the soft x-ray pulse and timing electronics are evaluated to be less than 70 ps.
Shimizu
Toshihiko
T
Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565-0871, Japan. shimizu-t@ile.osaka-u.ac.jp
Yamamoi
Kohei
K
Estacio
Elmer
E
Nakazato
Tomoharu
T
Sakai
Kouhei
K
Sarukura
Nobuhiko
N
Ehrentraut
Dirk
D
Fukuda
Tsuguo
T
Nagasono
Mitsuru
M
Togashi
Tadashi
T
Higashiya
Atsushi
A
Yabashi
Makina
M
Ishikawa
Tetsuya
T
Ohashi
Haruhiko
H
Kimura
Hiroaki
H