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进行了XeCl激光器工作参数优化实验,通过建立和分析XeCl激光器混合气体的动力学方程及模型,模拟计算了不同工作参数条件下,激光输出的瞬态过程,研究讨论了混合气体的配比和压强对准分子激光器的工作特性的影响,模拟分析了激光器最佳的运行参数.根据模拟结果对XeCl激光器的工作参数进行了优化调整实验,气体浓度配比设置为Ne/Xe/HCl=875/15/1,气体总压强设置为3.6×10~5 Pa,获得了单脉冲能量为180 mJ,脉冲宽度为30 ns的308 nm激光输出,脉冲重复频率为20 Hz,脉冲能量不稳定度小于5%. 相似文献
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大功率XeCl准分子激光器放电开关的实验研究 总被引:3,自引:1,他引:3
本文报道了一台输出功率大于100W、重复频率达300Hz的XeCl准分子激光器的放电开关系统进行实验结果,比较了激励电路放电开关系统中带磁开关和无磁开关两种情况下闸流管的动态放电参数,证明了带磁开关的开关系统有利于激光器高重复频率工作和大功率输出。 相似文献
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正 稀有气体卤素准分子已被证明是紫外区域有效的高功率激光媒质,其中最有希望的是:KrF、XeF和XeCl准分子。只要采用合适的氯施主,并以氖为稀释剂,XeCl可能像KrF一样,是有效的高功率激射媒质。此外,电子束激励XeCl激光器可以做到一次充气,连续工作几十次,输出功率不发生衰减,因此具有长寿命的特点。 我们研究的电子束控制放电XeCl激光器的具体条件如下。电子束部分:冷阴极电子枪由多条钽箔构成(面积为10100cm2),由8级Marx发生器驱动,能给出电压为190 相似文献
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放电泵浦XeCl激光的理论模型 总被引:1,自引:0,他引:1
本文对传输线作电源的自持放电XeCl激光进行动力学分析,给出电子能量分布玻尔兹曼方程、能量平衡方程、电子线路方程及激光振荡方程的数值解,并与实验结果作了比较。 相似文献
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Techniques of short pulse generation in discharge-pumped excimer lasers are experimentally and analytically investigated around the 1 ns region. With a compact Blumlein-type XeCl laser and an 8 cm cavity length, a lasing pulse duration of 1 ns FWHM was obtained. The pulse duration is remarkably shortened in comparison with the pumping period through the mechanism of controlled resonator transients. Next, pulse compression by an absorber-amplifier system is demonstrated in XeCl lasers. Incident pulses are compressed by a factor of 2/3 by passing through a saturable absorber butyl PBD, and a XeCl amplifier. 相似文献
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By developing a comprehensive computer code fore -beam excited XeCl lasers, we studied mainly the effect of Ar and Ne diluents on the performance characteristics of XeCl lasers. According to the analysis of the XeCl* formation process, the XeCl* relaxation process, and the 308 nm absorption process, it is found that the XeCl* formation efficiency is determined mainly by the rate of the charge transfer process (from Ar+ and Ne+ diluent ions to Xe+); in other words, by the difference between ionic potentials of Xe and the diluent gas used. The extraction efficiency is found to be decided mainly by the quenching rate of a three-body reaction for a short-pulse (55 ns) and a high-excitation-rate (∼ 3 MW/cm3) pumping, and by the absorption process for a long-pulse (500 ns) and a low-excitation-rate (∼ 0.2 MW/cm3) pumping. However, note that no appreciable difference in the intrinsic efficiency is found between the Ar/Xe/HCl and Ne/Xe/HCl mixtures. We also analyzed the dependence of the intrinsic XeCl laser efficiency on the pumping pulse width and excitation rate for Ar/Xe/HCl and Ne/Xe/HCl mixtures. As a result, the same intrinsic efficiencies are obtainable for both Ar- and Ne-based mixtures although the optimum operating conditions are slightly different. The maximum intrinsic efficiency of 5 percent is obtainable both for the Ar/Xe/HCl mixture at 3 atm and with 1.5 MW/cm3, 200 ns (FWHM) pumping and for the Ne/Xe/HCl mixture at 4 atm and with 2 MW/cm3, 200 ns (FWHM) pumping. 相似文献
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计算与实验表明,典型混合气体HCl/Xe/Ne的XeCl激光器中,在预电离阶段,电子与HCl的分解粘附反应不是电子损耗的主要过程;电子密度衰减很慢。这可能与电子的三体复合有关。 相似文献
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The output characteristics of a corona-preionized XeCl laser are described. Measurements in an He-based mixture up to 5 bars and in an Ne-based mixture up to 10 bars are presented. The maximum obtained output energy per unit volume is more than 9 J/l. 相似文献