横向表面放电光泵浦源特性研究

Characteristic study on optical pump source by transverse surface discharge

介绍了一种用以泵浦ＸｅＦ（Ｃ－Ａ）激光的横向表面放电辐射源，比较详细地研究了这种泵浦源的放电击穿特性、放电电流与充电电压及不同气体介质的关系、表面放电均匀性以及不同气体成分对表面放电辐射特性的影响。得到了放电击穿时间、放电峰值电流随充电电压、不同气体介质变化的曲线；分析了提高放电均匀性的途径，在电极长５０ｃｍ、间距６ｃｍ、充电电压２５ｋＶ条件下获得了均匀放电。获得了各种实验条件下放电辐射的光谱曲线；通过对辐射光谱的分析，研究了有利于光解离ＸｅＦ２的最佳实验条件，当ｐＡｒ： ｐＮ２＝１：１时，放电在远紫外波段产生的辐射最强。

An optical source used to pump XeF (C-A) laser is introduce. The discharge breakdown property, the current as a function of charge voltage in different gas, the discharge homogeneity and the effect of different gas composition on the discharge radiation have been experimentally studied. The discharge breakdown time, peak current as a function of charge voltage and buffer gas are obtained. The methods of increasing the discharge homogeneity are analysed. The time-integrated spectra of discharge radiation under different experimental conditions are also obtained. By analysing radiation spectra, the optimum experimental condition of photo-dissociation XeF2 is defined. The radiation intensity on the XUV region reaches the maximum value in case of pAr:pN2=1:1.