【摘要】 利用Ｆ－Ｐ干涉仪和迈克尔逊干涉仪对光泵ＮＨ＿３分子远红外激光的频谱特性进行了研究，证实在ＣＯ＿２－９Ｒ（１６）泵浦ＮＨ＿３分子时，产生双光子拉曼跃迁辐射；随着ＮＨ＿３工作压强的增加，双光子辐射相互作用增强，频谱展宽．更多还原

【Abstract】 The spectral characteristic of an optically pumped NH₃ molecules FIR laser isstudied by a F-P interferometer and a Michelson Interferometer. We verify that whenNH₃ molecules are pumped by CO₂-9R（16）line,a radiation by Raman transitions of twophotons is produced.Wheh the pressure of NH₃ gas increasing,the interaction of theRaman transitions increase,then the radiation is enhanced and the radiation spectrum isbroadened.更多还原