公开(公告)号：US5652757A

公开(公告)日：1997-07-29

申请号：US665916

申请日：1996-06-19

申请人： Yoji Okazaki ,  Chiaki Goto ,  Hiroaki Hyuga ,  Akinori Harada

发明人： Yoji Okazaki ,  Chiaki Goto ,  Hiroaki Hyuga ,  Akinori Harada

IPC分类号： G02F1/35 ,  G02F1/355 ,  G02F1/37 ,  H01S3/109 ,  H01S3/10

CPC分类号： G02F1/37 ,  H01S3/109 ,  G02F1/3553 ,  G02F2001/3546

摘要： In an optical wavelength converting apparatus, a fundamental wave impinges upon a crystal of a nonlinear optical material, the type II of phase matching between the fundamental wave and its second harmonic is effected, and the second harmonic of the fundamental wave is thereby radiated out of the optical wavelength converting apparatus. Two crystals constituted of the same material are employed as the crystal. The two crystals have equal lengths and are located in orientations such that corresponding optic axes may be shifted 90.degree. from each other. The optical wavelength converting apparatus yields the second harmonic having the maximum possible output power and yet can be kept small in size and low in cost.

摘要翻译： 在光波长变换装置中，基波对非线性光学材料的晶体入射，实现了基波和二次谐波之间的相位匹配型II，从而将基波的二次谐波从 光波长转换装置。 使用由相同材料构成的两个晶体作为晶体。 两个晶体具有相等的长度并且位于取向上，使得相应的光轴彼此相差90度。 光波长转换装置产生具有最大可能输出功率的二次谐波，并且可以保持尺寸小，成本低。

公开(公告)号：US5588014A

公开(公告)日：1996-12-24

申请号：US417673

申请日：1995-04-06

申请人： Yoji Okazaki ,  Chiaki Goto ,  Hiroaki Hyuga ,  Akinori Harada

发明人： Yoji Okazaki ,  Chiaki Goto ,  Hiroaki Hyuga ,  Akinori Harada

IPC分类号： G02F1/35 ,  G02F1/355 ,  G02F1/37 ,  H01S3/109 ,  H01S3/10

CPC分类号： G02F1/37 ,  H01S3/109 ,  G02F1/3553 ,  G02F2001/3546

摘要： In an optical wavelength converting apparatus, a fundamental wave impinges upon a crystal of a nonlinear optical material, the type II of phase matching between the fundamental wave and its second harmonic is effected, and the second harmonic of the fundamental wave is thereby radiated out of the optical wavelength converting apparatus. Two crystals constituted of the same material are employed as the crystal. The two crystals have equal lengths and are located in orientations such that corresponding optic axes may be shifted 90.degree. from each other. The optical wavelength converting apparatus yields the second harmonic having the maximum possible output power and yet can be kept small in size and low in cost.

公开(公告)号：US5315433A

公开(公告)日：1994-05-24

申请号：US843719

申请日：1992-02-28

申请人： Yoji Okazaki ,  Chiaki Goto ,  Hiroaki Hyuga ,  Akinori Harada

发明人： Yoji Okazaki ,  Chiaki Goto ,  Hiroaki Hyuga ,  Akinori Harada

IPC分类号： G02F1/35 ,  G02F1/355 ,  G02F1/37 ,  H01S3/109

CPC分类号： G02F1/37 ,  H01S3/109 ,  G02F1/3553 ,  G02F2001/3546

摘要： In an optical wavelength converting apparatus, a fundamental wave impinges upon a crystal of a nonlinear optical material, the type II of phase matching between the fundamental wave and its second harmonic is effected, and the second harmonic of the fundamental wave is thereby radiated out of the optical wavelength converting apparatus. Two crystals constituted of the same material are employed as the crystal. The two crystals have equal lengths and are located in orientations such that corresponding optic axes may be shifted 90.degree. from each other. The optical wavelength converting apparatus yields the second harmonic having the maximum possible output power and yet can be kept small in size and low in cost.

摘要翻译： 在光波长变换装置中，基波对非线性光学材料的晶体入射，实现了基波和二次谐波之间的相位匹配型II，从而将基波的二次谐波从 光波长转换装置。 使用由相同材料构成的两个晶体作为晶体。 两个晶体具有相等的长度并且位于取向上，使得相应的光轴彼此相差90度。 光波长转换装置产生具有最大可能输出功率的二次谐波，并且可以保持尺寸小，成本低。

公开(公告)号：US5432807A

公开(公告)日：1995-07-11

申请号：US208139

申请日：1994-03-09

申请人： Yoji Okazaki ,  Chiaki Goto ,  Hiroaki Hyuga ,  Akinori Harada

发明人： Yoji Okazaki ,  Chiaki Goto ,  Hiroaki Hyuga ,  Akinori Harada

IPC分类号： G02F1/35 ,  G02F1/355 ,  G02F1/37 ,  H01S3/109 ,  H01S3/10

CPC分类号： G02F1/37 ,  H01S3/109 ,  G02F1/3553 ,  G02F2001/3546

摘要： In an optical wavelength converting apparatus, a fundamental wave impinges upon a crystal of a nonlinear optical material, the type II of phase matching between the fundamental wave and its second harmonic is effected, and the second harmonic of the fundamental wave is thereby radiated out of the optical wavelength converting apparatus. Two crystals constituted of the same material are employed as the crystal. The two crystals have equal lengths and are located in orientations such that corresponding optic axes may be shifted 90.degree. from each other. The optical wavelength converting apparatus yields the second harmonic having the maximum possible output power and yet can be kept small in size and low in cost.

摘要翻译： 在光波长变换装置中，基波对非线性光学材料的晶体入射，实现了基波和二次谐波之间的相位匹配型II，从而将基波的二次谐波从 光波长转换装置。 使用由相同材料构成的两个晶体作为晶体。 两个晶体具有相等的长度并且位于取向上，使得相应的光轴彼此相差90度。 光波长转换装置产生具有最大可能输出功率的二次谐波，并且可以保持尺寸小，成本低。

公开(公告)号：US5506860A

公开(公告)日：1996-04-09

申请号：US323666

申请日：1994-10-17

申请人： Hiroaki Hyuga ,  Yoji Okazaki ,  Chiaki Goto

发明人： Hiroaki Hyuga ,  Yoji Okazaki ,  Chiaki Goto

IPC分类号： H01S3/098 ,  H01S3/109 ,  H01S3/08

CPC分类号： H01S3/08036 ,  H01S3/08004 ,  H01S3/109

摘要： A single-longitudinal-mode laser comprises a laser medium, an etalon, and a resonator. The etalon is located in the resonator in a state such that two light passage end faces of the etalon, which are parallel to each other, may make a predetermined angle with respect to a resonator axis. The longitudinal mode of the etalon coincides with a gain peak wavelength of the laser medium. The single-longitudinal-mode laser is free from the problems in that the threshold value of the pumping power for the oscillation of the laser becomes large, in that the output power of the laser becomes low, in that the profile of the radiated beam becomes distorted, and in that the single longitudinal mode characteristics become bad.

摘要翻译： 单纵模激光器包括激光介质，标准具和谐振器。 标准具位于谐振器中，使得标准具的彼此平行的两个光通过端面可以相对于谐振器轴线形成预定角度。 标准具的纵向模式与激光介质的增益峰值波长一致。 单纵模激光器不存在激光振荡的泵浦功率的阈值变大的问题，即激光的输出功率变低，辐射光的轮廓变为 扭曲，单纵模特性变差。

公开(公告)号：US6028869A

公开(公告)日：2000-02-22

申请号：US940974

申请日：1997-09-30

申请人： Akinori Harada ,  Chiaki Goto ,  Hiroaki Hyuga

发明人： Akinori Harada ,  Chiaki Goto ,  Hiroaki Hyuga

IPC分类号： H01S3/108 ,  H01S3/08 ,  H01S3/098 ,  H01S3/106 ,  H01S3/109 ,  H01S3/16 ,  H01S3/136

CPC分类号： H01S3/08036 ,  H01S3/0401 ,  H01S3/042 ,  H01S3/09415 ,  H01S3/109

摘要： A polarization control element for controlling the direction of polarization and the longitudinal mode of a laser is formed by cutting a birefringent crystal so that its light incident face and light emanating face are at an angle to the optical axis of the crystal and adjusting the thickness and the reflectivities of the faces of the crystal so that the crystal can function as a Fabry-Perot etalon. The thickness of the birefringent crystal is set so that the wavelengths selected by the birefringent crystal for two laser oscillation modes whose directions of polarization are normal to each other differ from each other.

摘要翻译： 用于控制激光的方向的偏振控制元件和激光的纵向模式通过切割双折射晶体而形成，使得其光入射面和光发射面与晶体的光轴成一角度并调节厚度， 晶体的表面的反射率使得晶体可以用作法布里 - 珀罗标准具。 双折射晶体的厚度设定为使得由偏振方向彼此正交的两种激光振荡模式的双折射晶体选择的波长彼此不同。

公开(公告)号：US5497388A

公开(公告)日：1996-03-05

申请号：US217175

申请日：1994-03-24

申请人： Chiaki Goto ,  Hiroaki Hyuga

发明人： Chiaki Goto ,  Hiroaki Hyuga

IPC分类号： G02F1/37 ,  G02F1/35 ,  H01S3/094 ,  H01S3/109 ,  H01S3/10

CPC分类号： H01S3/109 ,  G02F2001/3548 ,  H01S3/094038

摘要： A solid laser medium is pumped by a semiconductor laser in order to produce a solid laser beam. The solid laser beam having thereby been obtained is caused to impinge upon a crystal of a nonlinear optical material, and the wavelength of the solid laser beam is thereby converted into a different wavelength. A nonlinear optical coefficient of the crystal of the nonlinear optical material utilized for the wavelength conversion is represented by d.sub.IJ, where I, J=1, 2, 3, and an principal axis of indicatrix of the nonlinear optical material corresponding to J is represented by .alpha.. The direction of linear polarization of a laser beam, which is produced by the semiconductor laser and serves as a pumping beam, is set in the direction, which coincides with the principal axis of indicatrix .alpha. when it is viewed from the direction of incidence of the pumping beam.

摘要翻译： 固体激光介质由半导体激光器泵浦以产生固体激光束。 由此获得的固体激光束被撞击在非线性光学材料的晶体上，因此固体激光束的波长被转换成不同的波长。 用于波长转换的非线性光学材料的晶体的非线性光学系数由dIJ表示，其中I，J = 1,2,3，并且对应于J的非线性光学材料的指标的主轴由 α 。 由半导体激光器产生并用作泵浦光束的激光束的线偏振方向被设定在与从指示矩阵α的入射方向观察的指示矩阵α的主轴一致的方向上 泵送梁。

公开(公告)号：US5333145A

公开(公告)日：1994-07-26

申请号：US109443

申请日：1993-08-20

申请人： Hiroaki Hyuga ,  Chiaki Goto

发明人： Hiroaki Hyuga ,  Chiaki Goto

IPC分类号： H01S3/086 ,  H01S3/0941 ,  H01S3/16 ,  H01S3/09

CPC分类号： H01S3/105 ,  H01S3/086 ,  H01S3/1022 ,  H01S3/0941 ,  H01S3/163

摘要： A solid laser comprises an anisotropic laser crystal, to which a rare earth element has been added, a pumping device, which causes a pumping beam to impinge upon the laser crystal, and a resonator mirror, which oscillates a solid laser beam having been produced by the laser crystal. The laser crystal is located in an orientation such that its crystallographic axis may makes an angle with respect to a laser oscillation axis. A device linearly moves the pumping means with respect to the laser crystal and the resonator mirror such that only either one of ordinary rays and extraordinary rays, which are produced by the laser crystal, may oscillate selectively, or a device linearly moves the resonator mirror with respect to the laser crystal and the pumping means such that only either one of ordinary rays and extraordinary rays, which are produced by the laser crystal, may oscillate selectively. A single desired beam radiation line is thus selected easily.

摘要翻译： 固体激光器包括已经添加有稀土元素的各向异性激光晶体，引起泵浦光束撞击激光晶体的泵浦装置，以及谐振镜，其振荡由 激光晶体。 激光晶体位于使得其结晶轴可以相对于激光振荡轴线成一角度的方向。 装置相对于激光晶体和谐振镜直线移动泵浦装置，使得仅由激光晶体产生的普通光线和非凡光线中的任一种可以选择性地振荡，或器件使谐振器反射镜以 相对于激光晶体和泵浦装置，使得仅由激光晶体产生的普通光线和非凡光线中的任一种可以选择性地振荡。 因此，容易地选择单个期望的束辐射线。

公开(公告)号：US07339975B2

公开(公告)日：2008-03-04

申请号：US10769995

申请日：2004-02-03

申请人： Fusao Yamanaka ,  Yoji Okazaki ,  Chiaki Goto ,  Shinichi Shimotsu

发明人： Fusao Yamanaka ,  Yoji Okazaki ,  Chiaki Goto ,  Shinichi Shimotsu

IPC分类号： H01S3/08

CPC分类号： G02B19/0057 ,  G02B19/0014 ,  G02B19/0028 ,  G02B19/009 ,  G02B27/0961 ,  H01S5/005 ,  H01S5/02284 ,  H01S5/4012 ,  H01S5/4031

摘要： (Problem to be solved) To provide a laser beam synthesizing apparatus which is small in size and high in output power.(Means for solving the problem) A convergent angle transforming optical system 30 is disposed further upstream of the upstream-most position Pa in the positions where the optical axes of beam bundles La, Lb, Lc . . . which are radiated from a plurality of semiconductor lasers 11A, 11B, 112C . . . and converged in the fast axis view by a converging/dispersion lens 120 intersect each other in the fast axis view, and the whole beam bundle made up of the beam bundles La, Lb, Lc . . . passed through the converging/dispersion lens 120 is converged in the fast axis view by the convergent angle transforming optical system 30 so that the angle of convergence of the whole beam bundle is made smaller in the fast axis view, and introduced into the core 41 of an optical fiber 40.

摘要翻译： （待解决的问题）提供一种尺寸小，输出功率高的激光束合成装置。 （解决问题的手段）在束流束束La，Lb，Lc的光轴的位置，将会聚角度变换光学系统30设置在最上游位置Pa的上游的上游。 。 。 它们从多个半导体激光器11A，11B，112C辐射。 。 。 并且通过在快轴视图中彼此相交的会聚/分散透镜120以及由束束La，Lb，Lc构成的整个束束而在快轴视图中会聚。 。 。 通过会聚/分散透镜120，通过会聚角度变换光学系统30在快轴视图中会聚，使得整个束束的会聚角度在快轴视图中变小，并被引入到 光纤40。

公开(公告)号：US06922288B2

公开(公告)日：2005-07-26

申请号：US10767457

申请日：2004-01-30

申请人： Fusao Yamanaka ,  Yoji Okazaki ,  Chiaki Goto

发明人： Fusao Yamanaka ,  Yoji Okazaki ,  Chiaki Goto

IPC分类号： G02B6/42 ,  G02B3/00 ,  G02B27/09 ,  H01S5/22 ,  G02B27/10 ,  G02B5/04 ,  F21K000/00

CPC分类号： G02B19/0057 ,  G02B19/0028 ,  G02B27/0905

摘要： In a laser light multiplexing apparatus: a collimating optical system collimates light beams emitted from semiconductor lasers so that the slow axes of the light beams become coplanar, and optical axes of the light beams become parallel to each other; a light beam rearrangement optical system constituted by prisms respectively arranged in correspondence with the light beams rearranges the light beams in such a manner that directions of the fast axes of the light beams are changed at different locations along a direction in which the light beams propagate, and the fast axes of the light beams become coplanar; and a convergence optical system converges a bundle of the light beams rearranged by the light beam rearrangement optical system, in directions of the fast axes and the slow axes of the light beams, and makes the converged bundle of the light beams enter an optical fiber.

摘要翻译： 在激光多路复用装置中：准直光学系统对从半导体激光器发出的光束进行准直，使得光束的慢轴变得共面，并且光束的光轴变得彼此平行; 由与光束对应地分别配置的棱镜构成的光束重排光学系统以沿着光束传播方向的不同位置改变光束的快轴方向的方式重新排列光束， 光束的快轴变为共面; 会聚光学系统在由光束重排光学系统重新排列的光束在光束的快轴和慢轴方向上收敛，并使光束的会聚光束进入光纤。