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引言氮分子紫外激光最初由Heard在1963年报导过,但当时未引起人们的重视。1965年以后,尤其是Shipman采用Blumline电路获得2·5MW输出后,人们对于用这种激光器来作为高功率紫外相干光源产生了浓厚兴趣,特别是氮紫外激光器作为可调谐染料激光器的泵浦源有其独特的优点,更刺激着这种激光器研究工作的开展。此外,氮紫外激光还可用于农作物育种、检测污染、物質的螢光分折、原子和分子激发态寿命的测量、Raman光谱分折和光化学等方面。正是这些工农业和科学研究的实际需求有力地推动着氮激光器的迅速发展。目前这种器件有着多种类型的设计,最高输出近百兆瓦,脉宽最短达0·4ns,重复率
Introduction The nitrogen molecular UV laser was first reported by Heard in 1963 but did not receive much attention at the time. After 1965, especially when Shipman used the Blumline circuit for a 2.5 MW output, there was a great interest in using it as a source of high-power UV coherent light, in particular as a pump source for tunable dye lasers Its unique advantages, but also stimulate the development of this laser research work. In addition, nitrogen ultraviolet laser can also be used for crop breeding, detection of pollution, fluorescence spectroscopy, atomic and molecular excited state lifetime measurement, Raman spectroscopy and photochemical aspects. It is these practical needs of industry, agriculture and scientific research that strongly promote the rapid development of nitrogen lasers. At present, this device has many types of design, the maximum output of nearly 100 MW, the shortest pulse width of 0.4 ns, the repetition rate