| 摘要 |
PURPOSE:To reduce fluid resistance, and to obtain a laser device having a large output by fitting an auxiliary discharge electrode having approximately the same structure on the upstream side of a discharge region when an anode is mounted on one outer circumference of a duct, in which a laser gas is flowed, and a cathode crossing at right angle with a gas current into the duct and the discharge region is formed. CONSTITUTION:An anode 4 is fitted on the outer circumference of a duct 2 and a cathode 5 crossing at right angle with a gas current into the duct 2 in order to shape a discharge region 3 crossing at right angles with the gas 1 current into the duct 2 in which a laser gas 1 is flowed, and these electrodes are connected to a DC discharge power supply 6. In the constitution, an auxiliary discharge electrode 8 arranged in parallel with the anode 4 and an auxiliary discharge electrode 9 disposed in parallel with the cathode 5 are each mounted positioned on the upstream side of the discharge region 3, and these auxiliary discharge electrodes are connected to an AC power supply 11 through a ballast capacitance 10. Variable impedances 13 and 14 are interposed among the electrodes 5, 9 and 4, 8 as required. Accordingly, a resonator 7 is inserted into the discharge region 3, and beam outputs are projected from the resonator. |
