摘要:
研制了一种新型的预电离结构——管状预电离器，并将其应用于可调谐TEA CO2激光器。利用光栅选线方案，采用光栅谐振腔，实现了激光的调谐输出。在输出耦合率为50%、气压为40 kPa的条件下，10P(20),10R(20),9P(20),9R(20)四条谱线获得的最高电光转换效率，分别为9.5%，9.7%，9.8%，9.8%。实现了激光器的高重复频率可调谐输出运转，测量了上述4条谱线激光输出的脉冲能量及平均功率,在输出耦合率为50%、气压为30 kPa的条件下，重复频率最高可达190 Hz, 此时的10P(20),10R(20),9P(20),9R(20)四线的平均功率分别为322，321，340，338 W。
Abstract:
Tunable transversely excited atmospheric-pressure (TEA) CO2 laser has potential applications in laser radar, laser chemistry and laser propulsion. A new type of preionizer used in tunable TEA CO2 laser was investigated. With the means of grating line selection, tunable laser output was realized by grating resonator. On the condition that the output coupling efficiency is 50% and the pressure is 40 kPa, the maximal electro-optical efficiency of 10P(20),10R(20),9P(20) and 9R(20) lines is 9.5%, 9.7%, 9.8% and 9.8%, respectively. When the gas pressure is 30 kPa and the output coupling efficiency is 50%, the repetition rate is 190 Hz of the highest value. At the same time, the average power of 10P(20),10R(20),9P(20) and 9R(20) lines is 332, 321, 340 and 338 W, respectively
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