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21 October 1999 Development of intense short-wavelength Ni-like soft x-ray lasers toward the water window
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We report experimental results on Ni-like x-ray laser at the wavelength as short as 4.4 nm. The performance of x-ray lasing pumped by various types of pulse trains which were composed of 100 ps pulses was investigated with a double slab targets which were placed in series to double the gain length. Two opposing laser beams irradiated the double targets with a suitable time difference for quasi traveling wave pumping. The well collimated double target amplification was successfully demonstrated with two beam irradiation for Yb and Hf lasing at 5.0 nm and 4.7 nm whose gain length products were 11 and 6, respectively. The Ni- like lasing line of Ta have been observed at 4.5 nm. Based on these results, we will report the suitable pumping condition for the saturated water window x-ray lasers.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hiroyuki Daido, Stephane Sebban, Huajing Tang, Noriyuki Sakaya, Yusuke Tohyama, Takayoshi Norimatsu, Kunioki Mima, Yoshiaki Kato, Shiji Wang, Yuan Gu, Guanlong Huang, Kensuki Murai, Randolf Butzbach, Ingo Uschmann, Marcus Vollbrecht, and Eckhart Foerster "Development of intense short-wavelength Ni-like soft x-ray lasers toward the water window", Proc. SPIE 3776, Soft X-Ray Lasers and Applications III, (21 October 1999); doi: 10.1117/12.366687;


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