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Daido, Hiroyuki; Sagisaka, Akito; Ogura, Koichi; Orimo, Satoshi; Nishiuchi, Mamiko; Yogo, Akifumi; Mori, Michiaki; Li, Z.*; Kiriyama, Hiromitsu; Kanazawa, Shuhei; et al.
X-Ray Lasers 2006; Springer Proceedings in Physics, Vol.115, p.595 - 605, 2007/00
At present, using ultra-short high intensity lasers at APRC, JAEA Kansai photon research institute, we are developing laser driven multiple quantum beams such as protons, X-rays, electrons and THz waves. These beams are perfectly synchronized with each other. The pulse duration of each beam is lass than a pico-second. They have sharp directionality with high brightness. If we properly combined these, we have new pump-probe techniques for various applications.
Ochi, Yoshihiro; Hasegawa, Noboru; Kawachi, Tetsuya; Nagashima, Keisuke; Kishimoto, Maki; Tanaka, Momoko; Nishikino, Masaharu; Sukegawa, Kota; Yamatani, Hiroshi; Kunieda, Yuichi; et al.
no journal, ,
We have developed a chirped pulse amplification laser with flash lamp pumped zigzag slab Nd:glass amplifiers for pumping the TCE X-ray lasers at 0.1-Hz repetition rate at the Japan Atomic Energy Agency. The laser provided 7 J/1.6 ps main pulse and 1/8 intensity pre-pulse at 1.2 ns before the main pulse. An energy fluctuation at 0.1-Hz operation was 20% (RMS), which was comparable with our present laser using rod amplifiers. The line focus on the target surface was 20 
m in the width and 0.8 cm in the length. By using this laser, gain saturated Ni-like silver laser (
= 13.9 nm) with energy output of 
1 J was obtained. The beam divergence of the Ni-like silver laser was 
mrad. Consequently, the peak spectrum brilliance was estimated to be 10
photons/s/mm
/mrad2/0.1%BW. With 0.1-Hz repetition rate, this X-ray laser can be a powerful tool for a variety of applications.
Nishikino, Masaharu; Kawazome, Hayato; Tanaka, Momoko; Kishimoto, Maki; Hasegawa, Noboru; Ochi, Yoshihiro; Kawachi, Tetsuya; Sukegawa, Kota; Yamatani, Hiroshi; Nagashima, Keisuke; et al.
no journal, ,
We have developed a fully coherent X-ray laser at 13.9 nm and the application research has been started. The submicron X-ray beam can be generated by the soft X-ray laser with using optical elements. The theoretical calculation shows that it is expected to obtain the spot diameter of about 300 nm with a Fresnel zone plate. The submicron X-ray beam is used as the X-ray source for the Fourie-transform holography and the local irradiation of the material. The focusibility of the X-ray beam and the application research using the submicron X-ray beam will be presented.
Namba, Shinichi*; Hasegawa, Noboru; Nishikino, Masaharu; Kawachi, Tetsuya; Kishimoto, Maki; Tanaka, Momoko; Ochi, Yoshihiro; Nagashima, Keisuke; Takiyama, Ken*
no journal, ,