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An optically pumped carbon monoxide laser operating at elevated temperatures

机译:在高温下工作的光泵浦一氧化碳激光器

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摘要

A flowing gas, optically pumped, CO laser has been designed and built. The laser has been made to operate on the fundamental (≈5 μm) infrared bands of the CO vibrational states. The laser is powered by absorption of continuous wave radiation from an electric-discharge-excited CO laser. With this system, the kinetics of the establishment and maintenance of strong population inversions in CO at temperatures above 300 K is studied, independently of the complications of the electron impact processes and of other chemical channels which are present in electric discharge CO lasers. Lasing is obtained at temperatures up to 450 K, well above the cryogenic operating temperatures of conventional electric discharge CO lasers. The vibrational population distribution in the optically pumped laser is measured and the laser output power is determined as a function of the system operating parameters. Laser power conversion factors up to 14% have been observed. An optically pumped CO laser kinetic model is used to analyze the experimental results, providing insight into the details of secondary lasing kinetics.
机译:设计并制造了一种光学气体泵浦的流动气体。激光已经制成在CO振动状态的基波(≈5μm)红外波段上工作。激光器通过吸收来自放电激发的CO激光器的连续波辐射来供电。利用该系统,研究了在高于300 K的温度下建立和维持CO中强种群反转的动力学,而与电子撞击过程和放电CO激光器中存在的其他化学通道的复杂性无关。在高达450 K的温度下获得激光,该温度远高于常规放电CO激光器的低温工作温度。测量光泵浦激光器中的振动分布,并根据系统运行参数确定激光器的输出功率。已经观察到高达14%的激光功率转换系数。使用光泵浦CO激光动力学模型来分析实验结果,从而深入了解次级激光动力学的细节。

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