甲醇远红外激光的一条新谱线

甲醇（ＣＨ３ＯＨ）分子是常用的ＦＩＲ激活介质，具有很特别的光谱特征。而小型光泵脉冲亚毫米波激光器是近年来才发展起来的新技术，作者已经成功地研制出管长为１０￣３０ｃｍ的ＣＨ３ＯＨＦＩＲ激光器，并获得谱线。本文利用ＣＨ３ＯＨ分子有表编制成数据库管理程序，对光泵ＣＨ３ＯＨ亚毫米波激光进行计算。代入ＣＯ２－９Ｐ（１６）线振动吸收跃迁的条件及相应的亚毫米波纯转动跃迁所受的跃迁选择条件，将泵频偏限制在±０．０

A NEW FIR LINE OF CH3OH

Using the CH3OH molecular energy levels data bas e management program, it was deduced that when a CH3OH laser is pumped by CO 2-9P(16) line, there should be a FIR laser line of 918μm wavelength which ha s not been reported before, corresponding to a transition in a ground-state rev e rsed three-level energy system. The spectrum of this new line was calculated by solving the density matrix equations. Experimentally, the CH3OH FIR laser lin e of 918μm wavelength was obtained by pumping with a TEA-CO2 laser. The expe rimental results were in good agreement with the theoretical calculations.