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    Method and apparatus for frequency doubling a laser beam
    3.
    发明授权
    Method and apparatus for frequency doubling a laser beam 失效
    激光束倍频的方法和装置

    公开(公告)号：US4413342A

    公开(公告)日：1983-11-01

    申请号：US208511

    申请日：1980-11-20

    申请人： Martin G. Cohen ,  Kuo-ching Liu

    发明人： Martin G. Cohen ,  Kuo-ching Liu

    IPC分类号： G02F1/37 ,  H01S3/109 ,  H01S3/10

    CPC分类号： H01S3/109

    摘要： A method and apparatus for providing coincident orthogonally-polarized laser beams having twice the frequency of a fundamental frequency emitted by a laser source is disclosed. A second harmonic generator within a laser resonator cavity causes frequency-doubled laser beams to travel in opposite directions along an axis thereon. One of the beams undergoes a polarization change of substantially 90.degree. and is returned for travel along the laser axis in the same direction as a second frequency-doubled beam which has not undergone a polarization change. The orthogonally-polarized beams are then emitted through an output mirror designed for transmitting beams of twice the frequency of the fundamental beam.

    摘要翻译： 公开了一种用于提供具有由激光源发射的基频频率的两倍的重合正交偏振激光束的方法和装置。 激光谐振腔内的二次谐波发生器使倍频激光束沿着其轴线沿相反方向行进。 一个光束经历大致90°的偏振变化，并且沿着与没有经历偏振变化的第二倍频光束相同的方向沿着激光轴返回。 然后通过设计用于发射基波束频率的两倍的波束的输出反射镜发射正交偏振光束。

    Infrared laser system for surgical purposes employing compound fiber probe
    4.
    发明授权
    Infrared laser system for surgical purposes employing compound fiber probe 失效
    用于外科手术的红外激光系统采用复合纤维探针

    公开(公告)号：US4988163A

    公开(公告)日：1991-01-29

    申请号：US395342

    申请日：1989-08-17

    申请人： Martin G. Cohen ,  William I. Kern ,  Stephen Trokel

    发明人： Martin G. Cohen ,  William I. Kern ,  Stephen Trokel

    IPC分类号： B23K26/06 ,  G02B6/02 ,  G02B6/10

    CPC分类号： G02B6/102 ,  B23K26/06 ,  B23K26/0604 ,  B23K26/064 ,  G02B6/02

    摘要： A low energy laser system for surgical purposes, in particular, ophthalmic surgery, comprises a source of pulsed laser energy. Er:YAG lasers having a wavelength of 3 microns are preferred. Optical fibers which are responsive to the laser energy deliver amounts of the laser energy to selected body tissue sufficient to perform delicate surgical procedures without adverse biological or chemical interaction with the tissue. In particular, a compound fiber assembly is preferred for delivery of laser energy having a wavelength above 2 microns which compound fiber comprises an elongated fiber body comprised of fluoride based glass, a surgical optical fiber tip of a hard, moderately transparent mineral, such as quartz or sapphire, and an element for coupling the optical fiber tip to the fluoride glass body.

    摘要翻译： 用于外科手术的低能量激光系统，特别是眼科手术包括脉冲激光能源。 Er：具有3微米波长的YAG激光器是优选的。 响应于激光能量的光纤将激光能量的量输送到选定的身体组织，足以执行精细的外科手术，而不会与组织发生不利的生物或化学相互作用。 特别地，复合纤维组件优选用于输送波长高于2微米的激光能量，该复合纤维包括由氟化物基玻璃构成的细长纤维体，硬的中等透明矿物的外科光纤尖端，例如石英 或蓝宝石，以及用于将光纤末端连接到氟化物玻璃体的元件。