| 摘要 |
PURPOSE:To provide a laser beam regeneration amplifier capable of selecting a wavelength coinciding with beams to be amplified and narrowing a width of the selected wavelength. CONSTITUTION:This embodiment comprises: oscillator mirrors 1, 2 counterposed along an optical path; a gain medium 3 interposed between the oscillator mirrors 1, 2 to amplify beams 5 to be amplified; beam wave-composing means 6 interposed between the gain medium 3 and one oscillator mirror 1 to receive the beams 5 to be amplified into the optical path; beam wave-branching means 9 interposed between the gain medium 3 and the other oscillator mirror 2 to fetch amplified beams 25 from the optical path; and wavelength selecting means 24 arranged on the front surface side of one oscillator mirror 2 to scatter the wavelength of the amplified beams and pas only the amplified beams of a specific wavelength. |
