US 2016/0111846 A1 · GAS LASER OSCILLATION APPARATUS, GAS LASER OSCILLATION METHOD AND GAS LASER PROCESSING MACHINE

Abstract

A conventional gas laser oscillation apparatus cannot appropriately deal with an amount of laser gas introduced greater than normal use and can generate a turbulent flow around the total reflective mirror and the partial reflective mirror. This causes unstable discharge, resulting in unstable output of laser beams. The gas laser oscillation apparatus of the present disclosure has a laser oscillator, a first laser-gas inlet, a laser-gas outlet, a first laser-gas introducing port, a laser-gas circulation passage, and a second laser-gas introducing port. Disposed between a first discharge tube and any one of the total reflective mirror and a partial reflective mirror, the first laser-gas introducing port introduces laser gas into the laser oscillator. Disposed in the laser-gas circulation passage, the second laser-gas introducing port introduces laser gas into the laser-gas circulation passage. A laser-gas introducing section is connected to the first and the second laser-gas introducing ports.

Claims15

Dependent claims

A gas laser oscillation apparatus comprising:

a laser oscillator including:
one of a total reflective mirror and a partial reflective mirror disposed at a first end;
an other of the total reflective mirror and the partial reflective mirror disposed at a second end opposite to the first end;
and
a first discharge tube for exciting laser gas;
a first laser-gas inlet disposed between the first end and the first discharge tube for supplying the laser oscillator with laser gas;
a laser gas outlet disposed between the second end and the first discharge tube for emitting laser gas from the laser oscillator;
a first laser-gas introducing port disposed between the first end and the first discharge tube for introducing laser gas into the laser oscillator;
a laser-gas circulation passage that connects the first laser-gas inlet to the laser-gas outlet:
a second laser-gas introducing port disposed in the laser-gas circulation passage for introducing laser gas into the laser-gas circulation passage;
and
a laser-gas introducing section connected to the first laser-gas introducing port and the second laser-gas introducing port.

9 more elements

Dependencies are inferred from the claim text.

Gas laser oscillation apparatus, gas laser oscillation method and gas laser processing machine

Life of this patent

Gas laser oscillation apparatus, gas laser oscillation method and gas laser processing machine

Life of this patent

Abstract

Claims15