在低价氮离子中实现3s-2p软X射线的最佳条件研究  

Soft-X-Ray Lasing of 3s-2p in Low-Charged Nitrogen Ions

作　　者：陈建新[1] 王骐[1] 夏元钦[1] 陈德应[1] 

机构地区：[1]哈尔滨工业大学光电子技术研究所可调谐激光技术国家级重点实验室,哈尔滨150001

出　　处：《光学学报》2002年第10期1176-1180,共5页Acta Optica Sinica

基　　金：国家 8 6 3高技术激光技术主题资助;国家自然科学基金(6 0 0 780 10 )资助课题

摘　　要：从实现离子的基态和激发态之间粒子数反转的主要参量入手 ,数值计算了基态的粒子数密度、上能级和下能级的统计权重之比、三体复合速率和自发辐射衰减速率之比等每个参量对反转粒子数密度的影响 ,并且以基于光场感生电离 (OFI)复合机制B likeN系统为例对实际系统进行分析讨论 ,给出了实现基于光场感生电离B likeN4 5 .2 1nm 3s 2The influences of the main parameters on population inversion including initial population of the ground state, statistical weights ratio of the lower and upper laser levels, ratio of the three body recombination cascade speed and the spontaneons radiative decay speed are calculated and studied by using numerical calculations. The practical system is analyzed and discussed, with an example the recombination pumping B like N 45.21 nm 3s 2p system based OFI (Optical Field Ionization). The results including the optimal laser intensity to realize B like N 45.21 nm 3s 2p laser amplification are presented.

关 键 词：低价氮离子 反转粒子数密度 软X射线 低价复杂离子 最佳条件 

分 类 号：O434.1[机械工程—光学工程]