提出了一种基于铯原子拉曼跃迁的坏腔拉曼激光器,并分析了表示集体效应的自旋相关系数,光子通过禁戒跃迁以集体方式发射并耦合进入低Q 谐振腔，功率可达10^-9 W 量级。计算了该激光器的一些工作参数和特性，如抽运阈值、输出功率随各种条件的变化趋势，研究结果对今后的研究和实验有所帮助。

Raman transition based on caesium atoms in the bad cavity Raman laser is put forward. The spin correlation coefficient showing the collective effects is analyzed. The photo emits in a collective way through the forbidden transition and couples into the low Q resonant cavity, with a power level of 10^-9 W. The operating conditions and properties such as output power and pumping threshold changing with several parameters which can be useful for future analysis and practical experiment.