Laser device

Abstract

PURPOSE:To stabilize the laser power of a laser device by symmetrically disposing a laser beam monitor system and a diffraction light monitor system on an axis perpendicular to the predetermined laser oscillating axis and controlling the laser beam and the diffraction light symmetrically with respect to the laser oscillating axis. CONSTITUTION:Laser power incident to a pair of mirrors 11a, 11b and reflecting mirrors 13a, 13b arranged to approach the predetermined laser oscillation beam is measured by photodetectors 12a, 12b and 14a, 14b when concave and convex mirrors 2 and 3 are inclined with respect to the predetermined oscillating axis A. The laser power signal from the photodetectors is fed to a power control system 17. The power control system controls the regulation drive units of resonator mirror angle regulators 15, 16 so that a pair of signals from the respective photodetectors 12, 14 may become equal.

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Cited By (5)

    Publication numberPublication dateAssigneeTitle
    DE-10230522-B4November 13, 2008Rofin-Sinar Laser GmbhBandleiterlaser mit einem instabilen Resonator
    EP-0064476-A1November 10, 1982Asulab S.A.Dispositif de stabilisation d'émission d'un résonateur laser selon un mode d'émission déterminé
    FR-2544922-A1October 26, 1984Mitsubishi Electric CorpDispositif laser
    JP-2783890-B2August 06, 1998三菱電機株式会社, 東京電力株式会社レーザ発振器
    JP-H03257983-ANovember 18, 1991Mitsubishi Electric Corp, Tokyo Electric Power Co Inc:TheLaser oscillator