The numerical results show that the lasing threshold of an eigenmode depends on the EGDF, different eigenmode has different value of EGDF.

有效增益分布因子描子晶体中增益介质的空分布特性。

Chemical laser is characteristically energized by an exoergic chemical reaction which produces the nece ssary population inversion of lasing species.

化学激器是化学反应提供源, 并且化学反应产生粒子数反转为基础的。