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探讨了高功率激光对玻璃表面的破坏。测量了在200ps激光正入射照射下K8玻璃的破坏阈值。解释了样品输入面和输出面破坏阈值不同的原因。 相似文献
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We have developed and successfully demonstrated the "point projection absorption spectroscopy (hereafter abbreviated to PPAS)" technique to record keV X-ray absorption spectra in the coronal region of laser produced aluminum plasma which provides spatial information in the corona. Absorption spectrum of the Al Ⅻ 1s2-1s2p resonant line for time delays up to 250, 500 and 750 ps after the peak of the incident laser pulse have been observed. Analysis of an absorption spectrum should allow a high spatial resolution (< 25μm) history of the absorbing ion population density to be determined. The 1-D hydro-code JB19 has been used to simulate the experiment and the predictions are compared to the observations. Such comparison can be useful in validating parts of the codes used for gain prediction on recombination X-ray laser transitions. 相似文献
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1.06μm激光以3.5×1013W/cm2管壁辐照强度注入带侧向喷口Mg微管靶管内。利用X射线条纹相机测量Mg10+和Mg11+离子沿侧喷方向发射X射线谱随时间变化过程,X射线时间分辨谱结果表明,三体再复合过程是实现Mg10+离子激发态1s4p和1s3p能级间粒子数反转的主要机制。用2660?紫外激光探针探测侧向喷口处等离子体电子密度,其密度值与用光谱分析获取的一致。
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