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.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
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~~
关键词
紫外铜离子激光
辐射俘获
粒子数反转机理
UV Cu^＋ laser, radiation trapping, population inversion mechanism
