| abstract |
A laser device capable of obtaining a high-power beam and excellent in energy efficiency and a laser processing device using the same are provided. A laser device includes a laser oscillator including a total reflection mirror 11, a partial reflection mirror 12, and a Brewster window 13, an acoustooptic device 21 for temporally distributing laser light output from the laser oscillator, A laser amplifier including a window 14, mirrors 15 and 16, and a polarization rotating mirror 17 is formed. The laser light passes through the discharge excitation gas 2 arranged in the laser amplifier a plurality of times. [Selection] Figure 1 |