由宽波段多光子作用产生的锂分子高位态受激辐射

Stimulated Radiation from High lying State of Li 2 Generated with Multiphoton in a Wide Wavelength Region

本文报道了以６２０．０～６６５．０ｎｍ范围内任意波长激光作用下产生的锂分子高位态紫外扩散带受激辐射的实验结果，在锂分子－原子系统中，由激光双光子激发、并通过碰撞能量转移过程以及多光子电离复合过程使锂分子高位态获得布居，从而得到紫外区扩散受激辐射，该辐射来自较高的某个三重态向低排斥态ａ３Σ＋ｕ的跃迁的结果。文中对有关的辐射特性及激发机制进行了详细的分析和讨论。

The experimental results of ultraviolet diffuse band of stimulated radiation from the high lying state of Li 2 generated with any pumping wavelength between 620 0 665 0 nm were reported in this paper.In Li 2 Li system,the high lying state of Li 2 was generated by two photon excitation,ionization recombination process and collision energy pooling process,and the ultraviolet diffuse band radiation was stimulated.The radiation was due to the transition from one of the comparable high lying treble states to the low lying repelling state a 3Σ + u.The excitation mechanisms involved were discussed in detail.