レーザー駆動XUV～X線の時間分解分光応用清

摘要

X-ray pulse generated by an intense femtosecond-laser-pulse is not only short in duration, but also synchronized to the femtosecond laser pulse. This point is extremely important in realizing pump-probe measurements combined with femtosecond laser pulse to observe the dynamic responses of optically excited materials. This article shows examples of picosecond time-resolved X-ray absorption fine structure (XAFS) measurements using femtosecond-laser plasma soft x-ray as a diagnostic probe, which were conducted by NTT Basic Research Laboratories. Also, the current status of developing zinc oxide (ZnO) scintillator by Osaka University is described. Such a device is useful for adjusting timing and positioning of VUV/X-ray pulses in pump-probe experiments.