Claims
- 1. A laser oscillator device comprising an electric-discharge tube for producing an electric discharge in a laser gas contained in the electric-discharge tube for laser excitation, an optical resonator for effecting laser oscillation, and a gas circulating device having a gas blower and a cooling unit for forcibly cooling the laser gas,
- said gas blower comprising a turbo blower having an impeller casing and two impellers that are rotatable in laser gas within the casing and which are mounted on a single shaft for applying thrust loads in opposite directions, said turbo blower having grease lubricated bearings which are operated without positive pressure fluid sealing means.
- 2. A laser oscillator device according to claim 1, wherein the electric-discharge tube produces an electric discharge at a high frequency in the laser gas for laser excitation.
- 3. A laser oscillator device according to claim 1, wherein the laser oscillator device comprises an axial-flow laser.
Priority Claims (1)
Number |
Date |
Country |
Kind |
63-148918 |
Jun 1988 |
JPX |
|
Parent Case Info
This application is a continuation, of application Ser. No. 07/457,774, filed as PCT/00526, May 25, 1989, now abandoned.
US Referenced Citations (5)
Continuations (1)
|
Number |
Date |
Country |
Parent |
457774 |
Jan 1990 |
|