CO2 LASER DEVICE AND CO2 LASER PROCESSING DEVICE

摘要

The purpose of the present invention is to obtain a CO2 laser device and CO2 laser processing device for beaming at high output a pulse laser having a stable beam diameter that is not dependent on the repeat frequency. The present invention is provided with: laser gas (G), which acts as a CO2 laser medium; a nearly concentric stable optical resonator installed so that the curvature radius of at least one resonator mirror is equal to the distance between the optical switch and the resonator mirror; an optical switch provided within the stable optical resonator; and transmission mirrors (51-56) provided so that the laser light (41) generated from the stable optical resonator passes through the CO2 laser medium again.