| 摘要 |
PURPOSE:To discharge stably under the condition of high-speed pulse repeated operation by dividing the flow of a gas laser medium into the flows on the center side of a laser tube and on the outer side within the laser tube. CONSTITUTION:This has a laser tube, wherein a circular air duct 20 is formed and a gas laser medium is charged at specified pressure, and a solid anode, which forms one hand of the main discharge electrode being the component of the discharge part of this laser tube 21, is provided on the upper stream side of the gas laser medium in the air duct 20. The discharge face of the anode 22 is made in the specified curvature, and the rear side is made in wedge shape viewed in cross section, and the wedge-shaped part divides said flow in two, and forms two flows 23 and 24 with the anode between. A cathode 25, where a discharge part is made in mesh shape, is provided in opposition to the anode 22. Hereby, excited gas laser medium is excluded quickly from the main discharge space with every main discharge of specified width, and the main discharge space 26 is replaced with a gas laser medium flowing from the upper stream side, so the always stable main discharge can be obtained. |
