高气压预电离短脉冲XeCl准分子激光产生研究  

Study of New XeCl Laser with Short Duration Time and Preionzation at High Pressure

作　　者：任韧[1] 陈长乐[2] 徐进[3] 朱世华[4] 金克新[2] 任大男[4] 王永仓[2] 袁孝[2] 宋宙模[2] 

机构地区：[1]西安交通大学物理系和信息系,陕西西安710049 [2]西北工业大学应用物理系,陕西西安710072 [3]西安交通大学生物医学工程所,陕西西安710049 [4]西北大学数学系,陕西西安710069

出　　处：《光谱学与光谱分析》2005年第5期644-647,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金(60171034);陕西省自然科学基金(2001C21);西安交通大学自然基金(xjj2004013);博士点基金(20020698024;20030698027)资助

摘　　要：研究了在高气压、大体积、泵浦功率1.3959MW·cm-3抽运下,产生的XeCl准分子激光光谱,波段307.7～308.5nm,结果显示有两个谱线峰值307.98和308.19nm,谱线最强的跃迁是B—X跃迁,脉冲宽度11.13ns。在气体配比HCl∶Xe∶He=0.1%∶1%∶98.9%下,采用预电离初始电子,产生稳定辉光放电过程,获得了0.5～5Hz,单脉冲能量450mJ,束散角3mrad,短脉冲的准分子激光。New short duration time XeCl excimer laser has been generated at high pressure within a large volume in order to apply it to the interaction between laser and material, and material plasma study. The laser spectrum exhibits two laser lines at 307.98 and 308.19 nm, which is realized in the proportion of HCl : Xe : He = 0.1% : 1% : 98.9% through UV preionization. Theoretic analysis indicated that the maximum intensity loop is B to X grade. Not only UV preionization, glow discharge and the calculation of dynamic equation, but also the laser spectrum and pulse duration time measurement were carried out. It is shown that the duration time decreases and pulse energy rises with the increase in the pressure and discharge voltage. The minimum duration time exceeds 13 ns, the pulse energy is 450 mJ, and the beam divergence angle is 3 mrad.

关 键 词：XeCl^＊准分子激光 紫外预电离 纳秒放电 脉冲激光沉积技术 辉光放电 

分 类 号：TN242[电子电信—物理电子学]