US Patent No. 9,350,134

LASER OSCILLATOR PROVIDED WITH LASER MEDIUM FLOW PATH


Patent No. 9,350,134
Issue Date May 24, 2016
Title Laser Oscillator Provided With Laser Medium Flow Path
Inventorship Tetsuhisa Takazane, Yamanashi (JP)
Assignee FANUC CORPORATION, Yamanashi (JP)

Claim of US Patent No. 9,350,134

1. A laser oscillator comprising:
a first discharge tube and a second discharge tube;
a first light guide arranged between a first end of the first discharge tube and a first end of the second discharge tube;
a laser medium flow path which is in fluid communication with each of the first discharge tube, the second discharge tube,
and the first light guide; and

a blower arranged in the laser medium flow path so as to circulate a laser medium to the laser medium flow path, the first
discharge tube, and the second discharge tube, wherein

a flow resistance of the laser medium flow path between a discharge opening of the blower and the first end of the first discharge
tube is equal to a flow resistance of the laser medium flow path between the discharge opening and the first end of the second
discharge tube,

a flow resistance of the laser medium flow path between an intake opening of the blower and a second end of the first discharge
tube opposite the first end of the first discharge tube is equal to a flow resistance of the laser medium flow path between
the intake opening and a second end of the second discharge tube opposite the first end of the second discharge tube, and

a flow resistance of the laser medium flow path between the discharge opening and a first end of the first light guide is
different from a flow resistance of the laser medium flow path between the discharge opening and a second end of the first
light guide opposite the first end of the first light guide.