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德克萨斯州莱斯大学和华盛顿海军研究实验室的研究人员把晒化银镓（AgGase2）非线性晶体中以1．3μm和1．5μm波长工作的两台二极管泵浦激光器的光纤耦合输出组合，经差频振荡产生了室温8．7μm输出。这种连续波可调谐中红外辐射用于二氧化硫（SO2）的高分辨率气相光谱。研究人
Researchers at Rice University in Texas and the Washington Naval Research Laboratory coupled two fiber-coupled outputs of diode-pumped lasers operating at 1.3 and 1.5 μm in AgGase2 nonlinear crystals In combination, differential-frequency oscillation produced a room temperature 8.7μm output. This CW tunable mid-IR radiation is used for high resolution gas phase spectroscopy of sulfur dioxide (SO2). Researcher