Ultra-high-precision time control system over any long time delay for laser pump and synchrotron x-ray probe experiment.
An ultra-high-precision clock system for long time delay has been developed for picosecond time-resolved x-ray diffraction measurements using synchrotron radiation (SR) pulses and synchronized femtosecond laser pulses. The time delay control between pump laser pulse and the probe SR pulse was achieved by combining an in-phase quadrature modulator and a synchronous counter. This method allowed us to change the delay time by a nearly infinite amount while maintaining the precision of +/-8.40 ps. Time-resolved diffraction measurements using the delay control system were demonstrated for precise measurement of an acoustic velocity in a single crystal of gallium arsenide.
Fukuyama
Yoshimitsu
Y
Japan Synchrotron Radiation Research Institute/SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan.
Yasuda
Nobuhiro
N
Kim
Jungeun
J
Murayama
Haruno
H
Ohshima
Takashi
T
Tanaka
Yoshihito
Y
Kimura
Shigeru
S
Kamioka
Hayato
H
Moritomo
Yutaka
Y
Toriumi
Koshiro
K
Tanaka
Hitoshi
H
Kato
Kenichi
K
Ishikawa
Tetsuya
T
Takata
Masaki
M