| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas laser oscillator which is combined with a laser beam machine and which can easily change a parameter of a resonator during an operation of a system. SOLUTION: In the gas laser oscillator 1 having an optical resonator formed of an output mirror 7 and a rear mirror 5, an aperture disk 17 having a plurality of aperture holes different in apertures is installed between the output mirror and the rear mirror so that it can freely be rotated and positioned, The aperture hole of the desired aperture can freely be selected from a plurality of the aperture holes. COPYRIGHT: (C)2004,JPO |
