低强度激光泵浦类Ni离子X光激光实验
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摘要: 在试运行的神光Ⅱ装置上,采用新设计的凸柱面透镜列阵均匀线聚焦系统, 用两束激光焦线叠加和双靶对接等技术,以预主脉冲激光驱动方式,在(5~8)×1013W/cm2的较低强度激光泵浦条件下,观测到Ni-like Dy、Er、Yb的软X光激光输出,测得波长5.02nm类Ni-Yb和波长5.86nm类Ni-Dy的软X光激光的增益系数分别为1.6cm-1和1.4cm-1Abstract: The Nilike Dy, Er and Yb Xray lasers were observed under lower pumping laser irradiance of(58)×1013W/cm2 using the premainpulse laser driving scheme. The new convex cylindrical lens array was designed. The techniques of focus line overlapping and double target coupling were used. The gain coefficient of 1.6 and 1.4cm-1was meassured for Nilike Yb and Dy laser respectively.
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