摘要:
连续波氧碘化学激光是利用化学方法产生的介稳态O2（1Δ）与基态碘原子共振传能,产生波长1.315μm的碘激光。介稳态O2（1Δ）在生成后离开发生器时,带有一定量的水蒸汽,必须冷却除去水分,否则对激光器性能影响很大,但过冷会使水蒸汽变成“冰晶微粒”进入光腔,增加光腔内的散射损耗。本文采用双光路法,利用He—Ne激光器作为探测激光,对O2（1Δ）在冷却过程中是否出现“冰晶微粒”并带入光腔内,造成散射损耗进行了测量,测得的散射损耗小于1％。这说明O2（1Δ）经过冷阱后进入光腔的质量非常好,这个结果也为今后光腔设计提供了一个腔内散射损耗的数据。
Abstract:
If“snow Crystals”, formed in the course of depriving the vapor in the singlet oxygen flow are taken into cavity with flow, the scattering loss of CW chemical oxyen -iodine laser at 1.315μm will be increased. So in this paper, by the means of double optical path, using a He -Ne laser as a probe laser, the scattering loss whether the " snow crystals" are appeared adn flow into the cavity is measured. The scattering loss is measured smaller than 1%, it shows that the singlet oxygen is in high quality before it flow into the cabity. This result also provides the data of scattering loss in cavity for resonator design.
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