电子束泵浦XeF(C→A)激光的实验研究

给出了电子束泵浦XeF(C→A)准分子激光的实验资料并作了一些初步分析,这些结果是在选用最佳混合气体(对应电子束横向激发采用8大气压Ar,16托Xe,8托NF3;对应纵向激发采用2大气压Ar,8托Xe,3托NF_3)条件下得到的。着重研究了光学谐振腔对宽带内波长调谐性和输出功率的影响。用纵向电子束激发,在74毫微米宽带范围内(从455毫微米到529毫微米)得到了连续可调谐的窄带激光输出。当用棱镜作为色散元件时,其线宽约为5毫微米;如果用衍射光栅代替棱镜则线宽可窄至1毫微米左右。

Experimental study of an electron beam-pumped XeF(C-A) excimer laser

Experimental results of an electron beam-pumped XeF (C-A) excimer laser are presented and reviewed. Such a laser was operated with an optimized gas mixture of 8 At. Ar, 16 Torr Xe, 8 Torr NF3 for transverse excitation and 2 At. Ar, 8 Torr Xe, 3 Torr NF3 for longi-itudinal pumping. In patieular, the influence of the optical resonator configuration upon the broadband wavelength tuning and enhanced output power characteristics was studied. With longitudinal electron beam excitation a tuning range of 74 nm (from 455 nm to 529 nm) accompanied by spectral narrowing has been demonstrated. The linewidth of the laser emission is-5nm when a prism is used as the dispersive element and is reduced even further to-lnm when the prism is replaced by a diffraction grating.