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    SEMICONDUCTOR LASER DEVICE
    7.
    发明公开
    SEMICONDUCTOR LASER DEVICE 审中-公开
    半导体激光装置

    公开(公告)号：EP3118948A1

    公开(公告)日：2017-01-18

    申请号：EP15762037.8

    申请日：2015-03-03

    申请人： Hamamatsu Photonics K.K.

    发明人： ZHENG Yujin ,  KAN Hirofumi

    IPC分类号： H01S5/14

    CPC分类号： H01S5/4062 ,  H01S3/0804 ,  H01S3/08081 ,  H01S3/0815 ,  H01S5/02438 ,  H01S5/026 ,  H01S5/10 ,  H01S5/141 ,  H01S5/4025 ,  H01S5/405 ,  H01S5/4068 ,  H01S5/42

    摘要： A semiconductor laser device includes: a semiconductor laser array in which a plurality of active layers that emit laser lights with a divergence angle θ S (>4°) in a slow axis direction are arranged in the slow axis direction; a first optical element that reflects first partial lights advancing to one side in the slow axis direction by a first reflecting surface and returns the first partial lights to the active layers; and a second optical element that reflects partial mode lights of a plurality of mode beams of second partial lights advancing to the other side in the slow axis direction by a second reflecting surface and returns the partial mode lights to the active layers, the first optical element is disposed such that the first reflecting surface forms an angle equal to or greater than 2° and less than (θ S /2) with a plane perpendicular to an optical axis direction of the active layers, and the second optical element is disposed such that the second reflecting surface forms an angle greater than (-θ S /2) and equal to or less than -2° with the plane perpendicular to the optical axis direction of the active layers.

    摘要翻译： 一种半导体激光装置，包括：半导体激光器阵列，其中沿慢轴方向布置发射具有发散角θS（> 4°）的激光的多个有源层被布置在慢轴方向上; 第一光学元件，其反射通过第一反射面在慢轴方向上的一侧前进的第一部分光并且将第一部分光返回到有源层; 以及第二光学元件，其反射由第二反射面向慢轴方向的另一侧前进的第二部分光的多个模式光束的部分模式光，并使所述部分模式光返回到所述有源层，所述第一光学元件 被设置为使得所述第一反射表面与垂直于所述有源层的光轴方向的平面形成等于或大于2°且小于（θS/ 2）的角度，并且所述第二光学元件被设置成使得 第二反射面与垂直于有源层的光轴方向的平面形成大于（-θS/ 2）且小于等于-2°的角度。

    TIMING OF A Q-SWITCH TO SUPPRESS PRE-LASING OF THE LASER
    8.
    发明公开
    TIMING OF A Q-SWITCH TO SUPPRESS PRE-LASING OF THE LASER 审中-公开
    调Q开关的时序以抑制激光的预激

    公开(公告)号：EP2985843A2

    公开(公告)日：2016-02-17

    申请号：EP15020020.2

    申请日：2006-10-18

    申请人： SELEX ES LTD

    发明人： LEGGE, David

    IPC分类号： H01S3/11 ,  H01S3/094 ,  H01S3/16 ,  H01S3/0941 ,  H01S3/08 ,  H01S3/10

    CPC分类号： H01S3/11 ,  H01S3/0804 ,  H01S3/08045 ,  H01S3/094076 ,  H01S3/0941 ,  H01S3/10038 ,  H01S3/1611 ,  H01S3/1643

    摘要： A method for preventing spatial or spectral beam seeding in a Q- switched laser is described. The Q-switch trigger of the laser is delayed by several laser resonator lifetimes after the end of the pump pulse. In this way, beam seeding is completely eliminated whilst pre-lase is maintained. The method described may be used for any laser system where the fall time of the pump radiation is sufficiently fast with respect to the upper state lifetime of the laser medium.

    摘要翻译： 描述了一种用于防止Q开关激光器中的空间或光谱光束播种的方法。 泵脉冲结束后，激光器的Q开关触发器延迟了几个激光谐振器的使用寿命。 通过这种方式，光束播种在维持预激光的同时完全消除。 所描述的方法可以用于其中泵浦辐射的下降时间相对于激光介质的上限状态寿命足够快的任何激光系统。

    OPTICAL FIBER AND FIBER LASER DEVICE USING SAME
    9.
    发明公开
    OPTICAL FIBER AND FIBER LASER DEVICE USING SAME 审中-公开
    GLASFASER UND FASERLASERVORRICHTUNG DAMIT

    公开(公告)号：EP2905638A1

    公开(公告)日：2015-08-12

    申请号：EP13844427.8

    申请日：2013-09-25

    申请人： Fujikura Ltd.

    发明人： KASHIWAGI Masahiro

    IPC分类号： G02B6/036 ,  G02B6/024 ,  H01S3/067

    CPC分类号： G02B6/02047 ,  G02B6/024 ,  G02B6/03694 ,  H01S3/06729 ,  H01S3/06733 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/0804 ,  H01S3/08059 ,  H01S3/094003 ,  H01S3/094042 ,  H01S3/09415

    摘要： An optical fiber 10 propagates a light beam at a predetermined wavelength at least in an LP01 mode and an LP02 mode. In regions 11a and 11c in which the intensity of a light beam in the LP02 mode is greater than the intensity of a light beam in the LP01 mode, at least a part of a Young's modulus in the region 11c on the circumferential side of the region 11b in the core in which the intensity of the light beam in the LP01 mode is greater than the intensity of the light beam in the LP02 mode is smaller than a Young's modulus in the region 11b in which the intensity of the light beam in the LP01 mode is greater than the intensity of the light beam in the LP02 mode.

    摘要翻译： 光纤10至少以LP01模式和LP02模式传播预定波长的光束。 在LP02模式的光束的强度大于LP01模式的光束强度的区域11a，11c中，区域11c的区域11c的区域11的周边侧的杨氏模量的一部分 在LP01模式中的光束的强度大于LP02模式中的光束的强度的核心中的11b小于在LP01中的光束的强度的区域11b中的杨氏模量 模式大于LP02模式下光束的强度。