title: Response-time improved hydrothermal-method-grown ZnO scintillator for soft x-ray free-electron laser timing-observation.
abstract: 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.
authors.affiliation: Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565-0871, Japan. shimizu-t@ile.osaka-u.ac.jp
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Shimizu
authors.forename: Kohei
authors.initials: K
authors.lastname: Yamamoi
authors.forename: Elmer
authors.initials: E
authors.lastname: Estacio
authors.forename: Tomoharu
authors.initials: T
authors.lastname: Nakazato
authors.forename: Kouhei
authors.initials: K
authors.lastname: Sakai
authors.forename: Nobuhiko
authors.initials: N
authors.lastname: Sarukura
authors.forename: Dirk
authors.initials: D
authors.lastname: Ehrentraut
authors.forename: Tsuguo
authors.initials: T
authors.lastname: Fukuda
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Nagasono
authors.forename: Tadashi
authors.initials: T
authors.lastname: Togashi
authors.forename: Atsushi
authors.initials: A
authors.lastname: Higashiya
authors.forename: Makina
authors.initials: M
authors.lastname: Yabashi
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Ishikawa
authors.forename: Haruhiko
authors.initials: H
authors.lastname: Ohashi
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Kimura