It is show that, for the ultraviolet pre-ionization TEA CO2 Laser, the absorption of two photos in the process of the photo-ionization plays an important role.

研究表明，在紫外预电离tea CO_2激光器中的光离化过程中双光子吸收起着十分重要的作用。

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Thetheoretical calculations and the experiments suggest that, double pre-ionization has an obvious advantage for increasing the initial electron density between the main electrodes.

理论计算与实验表明，双预电离在提高主电极间初始电子密度方面存在着明显的优越性。

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In order to improve the output quality of the laser, we brought forward the concept of double pre-ionization, which is beneficial for the effective excitation of the laser media in the resonator.

为了提高激光器输出性能，我们提出了有利于腔内介质有效激发的双预电离概念。

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