Treating technology of discharge products in no-chain pulsed DF laser
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摘要:非链式脉冲DF 器放电产生的基态DF分子对激发态DF分子的消激发作用是影响 器稳定工作的重要原因。为解决这一问题，分别采用3A和5A分子筛作为吸附剂进行实验研究。无分子筛时， 器重频运转1 000个脉冲后，输出功率下降到初始功率的56%。分别使用3A、5A分子筛后， 器重频运转脉冲个数达到5 000和6 800时，输出功率下降幅度仍然不超过20%，大大提高了 器的稳定工作时间。实验结果表明，5A分子筛的吸附效率大于3A分子筛，且两种分子筛不仅对基态DF分子产生吸附，还对工作气体产生吸附，可通过及时补充工作气体提高 器的稳定性。Abstract:The de-excitation effect of ground state DF molecules after dicharge of no-chain pulsed DF laser to excited DF molecules is an important cause for laser's steady working. In order to solve this problem, molecular sieves of 3A and 5A were respectively used as the adsorbent for experiments. Without molecular sieve, the laser output power decreased to 56% of initial power after 1 000 repetitive pulses. After 3A and 5A molecular sieve being utilized, the decrease of laser power were less than 20% after 5 000 and 6 800 shots respectively, so the stability of the laser has been greatly improved. The results show that the adsorptive efficiency of 5A molecular sieve is higher than that of 3A molecular sieve. And these two molecular sieves adsorbed not only the ground DF molecules, but also reacting gas. So the stability of laser can be improved by supplementing of reacting gas timely.
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图 1放电引发非链式脉冲DF 器主机结构示意图
Figure 1.Schematic diagram of electric-discharge non-chain pulsed DF laser
图 4无分子筛时 器输出功率随重频运转脉冲个数的变化 (P0：初始输出功率，P：输出功率)
Figure 4.Output power curve versus pulse number without molecular sieve (P0:input power,P:output power)
图 53A分子筛加入前后 器输出功率随重频运转脉冲个数的变化
Figure 5.Output power curve versus pulse number with and without using 3A molecular sieve
图 6多次使用3A分子筛时 器输出功率的变化
Figure 6.Output power curve versus pulse number with multiple use of 3A molecular sieve
图 75A分子筛加入前后 器输出功率随重频运转脉冲个数的变化
Figure 7.Output power curve versus pulse number with and without using 5A molecular sieve
图 8多次使用5A分子筛时 器输出功率的变化
Figure 8.Output power curve versus pulse number with multiple use of 5A molecular sieve
图 9第1次使用3A和5A分子筛时 器输出功率的变化
Figure 9.Output power versus pulse number with using 3A and 5A molecular sieve for the first time
图 10 器补气前后输出功率随脉冲个数的变化
Figure 10.Output power versus pulse number before and after gas supplement
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