It is observed that the discharge current in a copper vapor laser rises prior to the voltage breakdown. This current, which appears almost 50 ns before the discharge breakdown and is equivalent to almost 70% of the peak current at the time of breakdown, is termed the phantom current. It is reported that by reducing the residual electron density (phantom current) in a metal vapor laser (MVL), its performance can be significantly improved. Metallic pins are used in the electrode to facilitate discharge in the long discharge tube. Besides augmenting the discharge during the initial stage, it has a significant impact on the laser performance. In this paper, we find out the correlation between the phantom current and the electrode pin geometry and then present the optimum electrode geometry for improved laser performance. It was observed that the number of pins in the electrode affects the localized electric field in the nearby region and plays a dominant role in the quantum of the p...

中文翻译：

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金属蒸气激光器中幻像电流对电极几何形状的依赖性

可以看出，在电压击穿之前，铜蒸气激光器中的放电电流上升。该电流出现在放电击穿之前约50 ns，相当于击穿时峰值电流的近70％，被称为幻象电流。据报道，通过降低金属蒸气激光器（MVL）中的残留电子密度（幻象电流），可以显着改善其性能。电极中使用了金属销，以便于在长的放电管中放电。除了在初始阶段增加放电外，它还对激光性能产生重大影响。在本文中，我们找出幻象电流与电极引脚几何形状之间的相关性，然后提出最佳电极几何形状以提高激光性能。