The UV pump radiation was obtained through a sum frequency process of the fundamental and the second harmonic of a CW mode locked Nd: YLF laser, where a novel wald off compensation scheme was adopted.

• 紫外泵浦光由连续波锁模Nd:YLF激光器输出的1053nm基频光与5265nm二倍频光经和频过程得到,和频过程采用了走离补偿新方案。