Experimental investigation of high-gain Ne-like Ge soft-x-ray laser by double-massive-target coupling
| Autor: | Jia-Tian Sheng, Yuanlong Ni, Wannian Chen, Guoping Zhang, Guanlin Zhou, Y. Gu, Dianyuan Fan, Yunfeng Shao, Zhengliang Zhou, Sizu Fu, Zunqi Lin, Hui-Min Peng, Zucong Tao, Guo-qiang Han, Tanxin Zhang, Shusen Wang, Songyu Yu, Jiang Wu, Shiji Wang |
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| Rok vydání: | 1992 |
| Předmět: | |
| Zdroj: | Journal of the Optical Society of America B. 9:360 |
| ISSN: | 1520-8540 0740-3224 |
| Popis: | By means of a novel experimental design called double-massive-target coupling, significant amplification of five lasing lines was observed with wavelengths (λ) of 19.6, 23.2, 23.6, 24.7, and 28.6 nm from 3p–3s transitions in Ne-like Ge ions at an irradiance of 1.2 × 1013 W/cm2 on the axis of an elongated plasma column. The maximum gain-length product (GL) values achieved were greater than 14 for 2 of the 5 lasing lines at 23.2 and 23.6 nm. Temporally resolved measurements of x-ray laser spectra indicate that the duration of the gain was ~0.8 ns, which is comparable with the Gaussian driving laser pulse width of 1 ns (FWHM) in our experiments. The measured divergence and refraction angles of the x-ray laser beam at 23.6 nm are presented. The dimension and position of the gain region are estimated. |
| Databáze: | OpenAIRE |
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