【摘要】 <正> 自1970年T.Y.Chang等人首先使用CO₂激光泵浦CH₃F、C₂H₂Cl和CH₃OH等分子以产生远红外激光取得成功以来,迄今约有80多种分子能用作远红外光泵激光的工作物质,产生波长从15μm至2mm范围的两千多条激光谱线.由于CO₂激光泵源的效率很高,而且激光泵浦能量集中在指定的谱线上,因而光泵激光器能达到较高的转换效率;同时,光泵激光光谱线具有较高的稳定性及频谱纯度. NH₃分子是最早引起人们注意并受到广泛研究的分子之一,它具有丰富的远红外光谱.1970年,T.Y.Chang等人曾用N₂O激光器作泵源来激励NH₃分子,首先观察到更多还原

【Abstract】 By using a grating-tuned TEA-CO₂ laser as a pumping source for pumping NH₃ molecules in a ASE cavity, ten FIR laser lines with wavelengths from 61 μm to 320 μm were obtained. Among them a new line with wavelength about 144μm pumped by 9P（34） IR line has been discovered, it may be a stimulated Raman line by aR（4,2） transition.更多还原