三能级Σ型原子系统中的光放大

本文分析了一个被相干和非相干泵浦的三能级原子的稳态增益和激光特性，得出产生无反转激光的条件和激光的强度。该系统能实现有粒子数反转激光到无粒子数反转激光的转变。

Emission spectrum of two atoms in a generalized two mode J C model

The emission spectrum of two atoms in a generalized two mode J C model is studied.The general expression of the emission spectrum is derived.It is found that the emission spectrum generally consists of nonsymmetric eight peaks.When two mode cavity fields are all in vacuum states,the spectrum shows non symmetric four peaks structure.The spectrum will have non symmetric six peaks when two mode cavity fields are all strong fields.