LASER AMPLIFIER POWER EXTRACTION ENHANCEMENT SYSTEM AND METHOD
    1.
    发明申请
    LASER AMPLIFIER POWER EXTRACTION ENHANCEMENT SYSTEM AND METHOD 审中-公开
    激光放大器功率提取增强系统和方法

    公开(公告)号:WO2007046918A2

    公开(公告)日:2007-04-26

    申请号:PCT/US2006029383

    申请日:2006-07-27

    Applicant: RAYTHEON CO

    Abstract: A high extraction efficiency laser system (30). The novel laser system (30) includes a master oscillator (32) for providing a laser beam, an amplifier (18) adapted to amplify the laser beam, and an aberrator (42) for aberrating the laser beam to prevent the formation of caustic intensity patterns within the amplifier (18). In an illustrative embodiment, the laser system (30) also includes a depolarizer (44) disposed between the master oscillator (32) and the amplifier (18) to reduce the contrast of speckle intensity patterns in the amplifier (18), and a mechanism (46) adapted to rotate or otherwise move the aberrator (42) to time-vary the aberrations in the beam in order to increase the spatial homogenization of saturation and extraction patterns in the amplifier (18). In a preferred embodiment, the coherence length of the beam is also shortened to reduce interference fringes in the amplifier.

    Abstract translation: 高提取效率激光系统(30)。 新颖的激光系统(30)包括用于提供激光束的主振荡器(32),适于放大激光束的放大器(18)和用于使激光束异像化以形成苛性强度的像差仪(42) 放大器(18)内的图案。 在说明性实施例中,激光系统(30)还包括设置在主振荡器(32)和放大器(18)之间的去偏振器(44),以减小放大器(18)中散斑强度图案的对比度, (46),其适于旋转或以其它方式移动所述像差仪(42)以对所述光束中的像差进行时间变化,以便增加放大器(18)中的饱和度和提取图案的空间均匀度。 在优选实施例中,光束的相干长度也被缩短以减小放大器中的干涉条纹。

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