| 摘要 |
PURPOSE:To reduce vibrations, to make it possible to neglect the effect which is exerted by a thermal expansion on resonance means and to contrive to improve the output of a laser and the stability of a mode by a method wherein a resonator is constituted into a structure wherein the resonance means are supported in such a way that the parallelism of the resonance means and the interval between the resonance means are held constant and discharge tube supporting means for supporting a discharge tube are not directly fixed on the resonance means and mirror supporting means. CONSTITUTION:A resonator is constituted into a structure wherein a pair of resonator plates 10a and 10b having a mirror for laser oscillation use are fixed by supporting rods 11 made of a material having a small thermal expansion coefficient in such a way that the interval between the plates 10a and 10b and the parallelism of the plates 10a and 10b are held. This resonator part is fixed on a base 4 by the plates 10a and 10b through rubber vibration insulators 3. A discharge tube 5 is mounted to discharge tube holding plates 6 and the plates 10 and 10b through 0-rings and the plates 6 are directly fixed on the base 4 with good accuracy in such a way that the center axis of the tube 5 is superposed on an optical axis. |
