| 摘要 |
PURPOSE:To enable small-sized and stable oscillation without decreasing output by a method wherein a means to interrupt the passage of gas medium thereby allowing the transmission of laser beams is provided at the connection part between reflection mirrors. CONSTITUTION:A laser beam light 1 resonates in a resonator by the reflection mirrors 17 and 19. Glow discharge tubes 13 and 13' are fixed on reflection mirror holders 18 and 20 with O-rings 33 and 33 and caulking rings 34 and 34, and then glow discharge occurs between cathodes 35 and 35' and an anode. An insulating tube 22' and 22 having a laser light transmitting part, a window 23 of ZnSe, Ge, GaAs, etc. is fixed between the reflection mirror holders 18 and 20 so as to seal the gas. Thereby, even when potential differences are generated between the mirror holders 18 and 20, and then going to cause discharge between metal exposd parts, a discharge current does not flow between the holders 18 and 20 because of existance of the part 23 which performs intrrupting action for the gas flow. |
