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    • 4. 发明专利
    • PULSE LASER DEVICE OF UNSTABLE RESONANCE TYPE
    • JPS6017974A
    • 1985-01-29
    • JP12571783
    • 1983-07-11
    • MITSUBISHI ELECTRIC CORP
    • KANEHARA YOSHIHIDEKOIKAWA SHIGERU
    • H01S3/08H01S3/094H01S3/10H01S3/104H01S3/23
    • PURPOSE:To obtain a high performance laser device by emitting a pulse laser light via a through hole formed at the center of a concave mirror for forming an unstable resonator, thereby triggering it and outputting a pulse laser light of large output. CONSTITUTION:A pulse laser light emitted from a pulse laser device 16 is introduced via a through hole (g) of a concave mirror 6' with a small hole into an unstable resonator formed of a concave mirror 6 and a convex mirror 7, and the propagating direction coincides with an optical axis (c). The pulse laser light is gradually isolated from the axis (c) while repeating reflections between the mirrors 6' and 7, and eventually led out of a stable resonator via a plane mirror 8 with a hole. In the meantime, the laser light is amplified by the repetition of the collision of the laser light with carbon dioxide gas molecules excited in the discharging medium (b) by the glow (or voiceless) discharge between discharging electrodes 2 and 3, and outputted as the large output laser light of a ring mode A. In other words, the pulse laser light becomes a trigger, and outputted as a large output laser light, but the pulse responding velocity is the same as the pulse laser light.