LASERIX-CLUPS, LIXAM UMR 8624, Université Paris-Sud 11, Bâtiment 350, F-91405 Orsay CEDEX, France.
Opt Lett. 2010 Feb 15;35(4):450-2. doi: 10.1364/OL.35.000450.
This Letter reports on the optimization of a tabletop nickel-like molybdenum transient collisionally excited soft x-ray laser (SXRL) at 18.9 nm performed by a double-pulse single-beam grazing incidence pumping (DGRIP). This scheme allows for the first time, to our knowledge, the full control of the pump laser parameters including the pre-pulse duration optimally generating the SXRL amplifier under a grazing incidence. The single-beam geometry of the collinear double-pulse propagation guarantees the ideal overlap of the pre-pulse and main pulse from shot to shot resulting in a more efficient and highly stable SXRL output. SXRL energies up to 2.2 microJ are obtained with a total pump energy less than 1 J for several hours at a 10 Hz repetition rate without realignment under once optimized double pumping pulse parameters including energy ratio, time delay, pre-pulse and main pulse durations, and line focus width.
这封信件报告了一种台式类镍钼瞬态碰撞激发软 X 射线激光（SXRL）的优化，该激光在 18.9nm 处通过双脉冲单光束掠入射泵浦（DGRIP）实现。据我们所知，该方案首次能够完全控制泵浦激光参数，包括预脉冲持续时间，在掠入射下最佳地产生 SXRL 放大器。共线双脉冲传播的单光束几何形状保证了预脉冲和主脉冲在每个激光脉冲中的理想重叠，从而产生更高效和高度稳定的 SXRL 输出。在 10Hz 的重复率下，对于几个小时的时间，在一次优化的双脉冲泵浦参数（包括能量比、时间延迟、预脉冲和主脉冲持续时间以及线焦点宽度）下，总泵浦能量小于 1J 时，可获得高达 2.2μJ 的 SXRL 能量，无需重新调整。
