| 摘要 |
PURPOSE:To provide a gas laser oscillator equipped with a gas circulation system which can ensure a sufficient amount of gas circulation and a sufficient speed of circulation and attain compactization of an apparatus and an improvement in oscillation efficiency. CONSTITUTION:A gas laser oscillator equipped with a gas circulation system with a cooling means consisting of a pair of gas circulation centrifugal fans 21a, 21b fixed face to face in a vicinity of both ends of a fan driving shaft 22, a pair of vortex chambers 26a, 26b so provided as to surround this pair of gas circulation centrifugal fans 2a, 21b and as to make the openings face, and a cylindrical gas cooling heat exchanger 30 where both end openings are joined to the respective openings of this vortex chambers 26a, 26b and arranged concentrically with the driving shaft 22 of the centrifugal fans 21a, 21b. |
