Masaharu Nishikino, Noboru Hasegawa, Masahiko Ishino, Yoshihiro Ochi, Tetsuya Kawachi, Mitsuru Yamagiwa, Yoshiaki Kato. Soft X-ray laser observation of femtosecond-laser-driven ablation of tungsten[J]. Chinese Optics Letters, 2015, 13(7): 070002
- Chinese Optics Letters
- Vol. 13, Issue 7, 070002 (2015)
Fig. 1. Soft X-ray amplification with nickel-like Ag ions.
Fig. 2. Layout of a soft X-ray laser composed of an oscillator and an amplifier.
Fig. 3. X-ray laser interferometer using a double Lloyd’s mirror for observation of ablation by fs laser irradiation. Inset, interference pattern with the fringe shift in the ablated region.
Fig. 4. (a) X-ray laser interference patterns of W at 48 and 71 ps after fs laser irradiation; (b) temporal evolution of the height of the ablation front, determined from the interference patterns.
Fig. 5. X-ray reflective images of the ablation region of W ranging from 19 to 258 ps after fs laser irradiation.
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