放电管口径对紫外铜离子激光下能级消激励的影响  

Influence of the discharge tube aperture on the deexcitation of lower level in UV Cu^+ laser

作　　者：陈钢[1] 潘佰良[1] 毛邦宁[1] 夏婷婷[1] 姚志欣[1] 

机构地区：[1]浙江大学物理系,杭州310027

出　　处：《物理学报》2006年第1期197-201,共5页Acta Physica Sinica

基　　金：惯性约束聚变技术探索基金(批准号:2004AA84TS04);国家自然科学基金(批准号:10374081;01574111);中国博士后科学基金(批准号2004036482)资助的课题~~

摘　　要：从纵向纳秒脉冲放电的铜离子紫外激光动力学机理出发,得到了激光上、下能级形成粒子数反转所需的必要条件,理论分析了其功率随放电管孔径减小而迅速增加的实验现象,指出放电管孔径的减小能够有效抑制激光下能级辐射俘获的发生,从而提高了激光下能级的排空速率,使得激光功率增加.Based on the kinetic process of UV Cu^＋ laser in longitudinal nanosecond-pulsed discharge, the necessary condition for the population inversion between the upper and lower laser levels has been obtained. The experimental phenomenon that the laser power increases rapidly with the decrease of the discharge tube aperture has been analyzed theoretically, it is pointed out that the radiation trapping of lower laser level could be restrained effectively by reducing the tube radius, resulting in the increase of depopulation rate of lower laser level and the laser power.

关 键 词：紫外铜离子激光 辐射俘获 粒子数反转机理 

分 类 号：O432.1[机械工程—光学工程]