| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a laser oscillation device for efficiently absorbing scattered light from a laser beam and effectively protecting a laser oscillator. Ž<P>SOLUTION: The laser oscillation device includes the laser oscillators A201 or the like, a light guide part for guiding the laser beam irradiated from the laser oscillators to a prescribed optical path, and a protective wall A601 or the like for absorbing the scattered light from the laser beam. Especially the protective wall A601 or the like is formed of an aluminum or an aluminum alloy to which black alumite treatment is performed on the surface. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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