介绍了用于超短超强激光脉冲-脉冲气体靶相互作用研究的新型差分抽运系统,与高效高分辨率大面积透射光栅光谱仪配合,进行了超短激光脉冲辐照下氩气喷靶的软X射线发射特性的实验研究。实验表明,该谱仪有足够的灵敏度参与超短强激光脉冲辐照气体靶的软X射线产生、X射线激光乃至高次谐波实验的软X射线光谱诊断工作。

A novel differential pump system is presented. Combined with a high efficiency, high spectral resolution large size transmission grating spectrograph, the differential pump system is especially suitable for the research of the ultrashort pulsed laser-gas puff target interaction. The experiments on soft X-ray spectral diagnosis of Ar puff target irradiated by femtosecond laser pulses are carried out. The results show that the spectrograph is a powerful tool of spectral diagnosis in experiments on the ultrashort pulsed laser-gas puff target interaction, optical-field ionization soft X ray laser, and high-harmonic generation.