报道了在本实验室建立的４５ｆｓ－２ＴＷ级超短超强钛宝石激光装置上，以Ａｒ气为非线性工作介质进行的高次谐波实验的初步结果。研究了激光能量和气体密度对高次谐波的影响，目前得到的最高次谐波为２５次，相应波长为３１．４ｎｍ。深入的实验研究正在进行之中 The preliminary results of higher harmonic experiments with Ar gas as the nonlinear working medium were reported on the 45fs-2TW ultra-short super titanium sapphire laser device established in our laboratory. The effects of laser energy and gas density on the higher harmonics were studied. The highest harmonics presently obtained were 25 times and the corresponding wavelength was 31.4 nm. In-depth experimental research is underway