Patent ID: 6944200
Filing Date: 2005-09-13
Classification: H01S

Abstract:
1. A laser oscillator comprising: a discharge tube for exciting a laser medium disposed inside of said discharge tube by applying energy; a first mirror and a second mirror disposed on an optical axis of a laser beam emitted from the laser medium excited by said discharge tube; a first mirror holder and a second mirror holder operable to hold said first mirror and said second mirror, respectively; a plurality of mirror holder connecting members operable to connect said first mirror holder to said second mirror holder; a discharge tube support operable to support said discharge tube; a first fixing part operable to fix said first mirror holder to said discharge tube support in a laser beam axial direction and in a perpendicular direction to the laser beam axis, said first fixing part having a degree of freedom in a rotating direction within a plane including the laser beam axial direction; a second fixing part operable to fix said second mirror holder to the discharge tube support in the perpendicular direction to the laser beam axis, said second fixing part being slidable in the laser beam axial direction; and a plurality of ribs operable to connect said plurality of mirror holder connecting members with said discharge tube support, said ribs being slidable against said plurality of mirror holder connecting members in the perpendicular direction to the laser beam axis.