| 摘要 |
PURPOSE:To oscillate both laser beams by an unstable type resonator and laser beams by a stable type resonator by fitting the unstable type resonator and the stable type resonator using a concave mirror in common and taking in and out a plane mirror to a resonator space. CONSTITUTION:A concave mirror 4 and a convex mirror 5 constituting an unstable type resonator and a beam-extracting mirror 6 are disposed. A plane mirror 11 is set up immediately before the beam-extracting mirror 6, a partial reflecting mirror 12 is mounted to an oscillator box body 1 so that a stable type resonator is constituted by said concave mirror 4 and the plane mirror 11, and a mirror-moving mechanism 13 taking in and out said plane mirror to a resonator space is housed in the oscillator box body 1. In such constitution, the unstable type resonator is organized by the concave mirror 4, the convex mirror 5 and the beam-extracting mirror 6 when the plane mirror 11 is extracted from the resonator space by the mirror-moving mechanism 13, and the stable type resonator is constructed by the concave mirror 4, the plane mirror 11 and the partial reflecting mirror 12 when the plane mirror 11 is introduced into the resonator space. |
