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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >EXPERIMENTAL AND THEORETICAL INVESTIGATIONS OF A XECL PHOTOTRIGGERED LASER
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EXPERIMENTAL AND THEORETICAL INVESTIGATIONS OF A XECL PHOTOTRIGGERED LASER

机译：XECL光触发激光的实验和理论研究

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Detailed experimental and theoretical studies of a phototriggered XeCl excimer laser have been performed through the development and the experimental validation of a zero-dimensional model, which self-consistently coupled the solution of the Boltzmann equation, the kinetic equations of heavy particles, the electrical circuit and the photon equations. A detailed description of the XeCl molecule and of the associated kinetics has been taken into account, together with the effect of the gas temperature growth on the stimulated emission cross section. The model predictions have been compared with the experimental results obtained from a complete set of time-resolved electrical and optical diagnostics including emission and laser absorption spectroscopy on various xenon and neon states. A specific output energy of 7.6 J I-1 and an efficiency of 3.5% are reported, which indicates the effectiveness of the phototriggered discharges to produce high-performance excimer lasers. Simple rules allowing the calculation of the required voltage for best efficiency or maximum output laser energy are given. It is shown that these optimum voltages can be estimated from a solution of a steady state Boltzmann equation requiring only knowledge of the gas mixture composition. At low capacitance values, some discrepancies between the model predictions and the experiments appear whenever the initial voltage is higher than the voltage corresponding to the maximum output energy. The spectroscopic investigation of the discharge has pointed out that these discrepancies can be ascribed to the onset of an instability, which cannot be predicted in the frame of a zero-dimensional model. [References: 93]
机译：通过零维模型的开发和实验验证，对光触发的XeCl准分子激光进行了详细的实验和理论研究，该维模型自洽地耦合了Boltzmann方程的解，重粒子的动力学方程，电路和光子方程。已考虑到XeCl分子及其相关动力学的详细描述，以及气体温度增长对受激发射截面的影响。已将模型预测与从一套完整的时间分辨的电气和光学诊断程序（包括在各种氙气和氖气状态下的发射和激光吸收光谱）获得的实验结果进行了比较。报告的比输出能量为7.6 J I-1，效率为3.5％，这表明光触发放电产生高性能准分子激光器的有效性。给出了简单的规则，可以计算所需的电压以获得最佳效率或最大输出激光能量。结果表明，可以从只需要了解气体混合物成分的稳态玻尔兹曼方程的解中估计出这些最佳电压。在低电容值下，每当初始电压高于对应于最大输出能量的电压时，模型预测和实验之间就会出现一些差异。放电的光谱研究指出，这些差异可以归因于不稳定的开始，而这种不稳定不能在零维模型的框架中进行预测。 [参考：93]

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