公开(公告)号：US09310487B2

公开(公告)日：2016-04-12

申请号：US14347938

申请日：2012-12-07

Applicant: Takeshi Sakimura ,  Takayuki Yanagisawa ,  Shumpei Kameyama ,  Toshiyuki Ando ,  Yoshihito Hirano

Inventor： Takeshi Sakimura ,  Takayuki Yanagisawa ,  Shumpei Kameyama ,  Toshiyuki Ando ,  Yoshihito Hirano

IPC: G01C3/08 ,  G01S17/10 ,  G01S17/95 ,  G01S17/58 ,  G01S7/481 ,  G01S7/484

CPC classification number: G01S17/102 ,  G01S7/4815 ,  G01S7/4818 ,  G01S7/484 ,  G01S17/107 ,  G01S17/58 ,  G01S17/95 ,  Y02A90/19

Abstract: A lidar includes CW laser light sources that oscillate CW laser light rays with wavelengths different from each other; an optical multiplexing coupler that mixes the CW laser light rays oscillated by the CW laser light sources; an optical branching coupler that splits the CW laser light passing through the mixing by the optical multiplexing coupler; a light modulator that modulates first CW laser light split by the optical branching coupler; and an optical fiber amplifier that amplifies the laser light modulated by the light modulator, in which a transmit-receive optical system irradiates a target with the laser light amplified by the optical fiber amplifier, and receives scattered light of the laser light by the target.

Abstract translation: 激光雷达包括CW激光光源，其振荡具有彼此不同波长的CW激光光线; 光复用耦合器，其混合由CW激光光源振荡的CW激光; 光分路耦合器，其通过光复用耦合器分离通过混合的CW激光; 调制由光分路耦合器分离的第一CW激光的光调制器; 以及放大由光调制器调制的激光的光纤放大器，其中发射接收光学系统用由光纤放大器放大的激光照射目标，并且由目标接收激光的散射光。

公开(公告)号：US20140285804A1

公开(公告)日：2014-09-25

申请号：US14356247

申请日：2011-12-27

Applicant: Fumio Shoda ,  Hidenori Fukahori ,  Takayuki Yanagisawa ,  Mitoru Yabe ,  Tetsuya Nishimura ,  Shuhei Yamamoto ,  Yoko Inoue ,  Tetsuo Funakura

Inventor： Fumio Shoda ,  Hidenori Fukahori ,  Takayuki Yanagisawa ,  Mitoru Yabe ,  Tetsuya Nishimura ,  Shuhei Yamamoto ,  Yoko Inoue ,  Tetsuo Funakura

IPC: G01J1/42

CPC classification number: G01J1/4257 ,  G01J1/0407 ,  G01J1/0411 ,  G01J1/0414 ,  G01J1/0429 ,  G01J1/0448 ,  G01J1/0474 ,  G01J1/22

Abstract: A laser output measuring apparatus in which an optical separator is disposed in a position that is rotated by a predetermined angle about an optical axis of a laser beam converged by a lens, and further rotated by a predetermined angle about the optical axis of the laser beam and a straight line perpendicular to an incident surface of the laser beam.

Abstract translation: 一种激光输出测量装置，其中光学分离器设置在围绕由透镜会聚的激光束的光轴旋转预定角度的位置，并且进一步围绕激光束的光轴旋转预定角度 以及垂直于激光束的入射表面的直线。

公开(公告)号：US20130279170A1

公开(公告)日：2013-10-24

申请号：US13979026

申请日：2011-01-17

Applicant: Akira Yokoyama ,  Motoaki Tamaya ,  Takayuki Yanagisawa

Inventor： Akira Yokoyama ,  Motoaki Tamaya ,  Takayuki Yanagisawa

IPC: F21V29/00

CPC classification number: H01S5/0092 ,  F21V29/90 ,  G02F2001/3546 ,  H01S5/02252 ,  H01S5/02446 ,  H04N9/3161

Abstract: A laser light source module includes a laser light source outputting laser light, a wavelength conversion element converting a wavelength of the laser light, a temperature sensor mounted on a first face of the wavelength conversion element, a heater substrate of a ceramic base material, on which the wavelength conversion element is mounted. A heater is provided on the heater substrate, in which a sub-mount substrate on which the laser light source is mounted and the heater substrate are fixed to a heat sink, and the heat sink includes a concavity at a position corresponding to a projection region of the wavelength conversion element opposite to the substrate, whereby the entire wavelength conversion element is kept at the most suitable operation temperature, and laser light can be wavelength-converted in higher efficiency.

Abstract translation: 激光光源模块包括输出激光的激光源，将激光的波长转换的波长转换元件，安装在波长转换元件的第一面上的温度传感器，陶瓷基材的加热器基板， 其中波长转换元件被安装。 加热器设置在加热器基板上，其中安装有激光光源的子安装基板和加热器基板固定到散热器，并且散热器包括在对应于投影区域的位置处的凹部 与整个波长转换元件保持在最合适的工作温度，激光可以以更高的效率进行波长转换。

公开(公告)号：US20130121355A1

公开(公告)日：2013-05-16

申请号：US13810750

申请日：2010-12-21

Applicant: Noriyuki Miyamoto ,  Shuhei Yamamoto ,  Takayuki Yanagisawa ,  Yoshihito Hirano

Inventor： Noriyuki Miyamoto ,  Shuhei Yamamoto ,  Takayuki Yanagisawa ,  Yoshihito Hirano

IPC: H01S3/04

CPC classification number: H01S3/04 ,  H01S3/042 ,  H01S3/0632 ,  H01S3/0635 ,  H01S3/08072 ,  H01S3/2308 ,  H01S3/2383

Abstract: In a laser device, a control range of focal distance of a generated thermal lens is broadened and reliability is improved. A mode control waveguide-type laser device includes: a planar laser medium having a waveguide structure in a thickness direction of a cross section perpendicular to an optical axis, for generating gain with respect to laser light; a cladding bonded onto the laser medium; and a heat sink bonded onto the laser medium. The laser medium generates a lens effect, and the laser light oscillates in a waveguide mode in the thickness direction, and oscillates in a spatial mode due to the lens effect in a direction perpendicular to the optical axis and the thickness direction. The refractive index distribution within the laser medium is created by generating a temperature distribution in the laser medium depending on a junction area of the cladding and the heat sink.

Abstract translation: 在激光装置中，所产生的热透镜的焦距的控制范围变宽，可靠性提高。 模式控制波导型激光装置包括：平面激光介质，其在垂直于光轴的横截面的厚度方向上具有波导结构，用于产生相对于激光的增益; 覆盖在激光介质上的包层; 和结合到激光介质上的散热器。 激光介质产生透镜效应，并且激光在厚度方向上以波导模式振荡，并且由于在垂直于光轴和厚度方向的方向上的透镜效应而以空间模式振荡。 激光介质内的折射率分布是通过根据包层和散热器的接合区域在激光介质中产生温度分布而产生的。

公开(公告)号：US07839908B2

公开(公告)日：2010-11-23

申请号：US11579454

申请日：2005-03-30

Applicant: Takayuki Yanagisawa ,  Yoshihito Hirano ,  Syuhei Yamamoto ,  Masao Imaki ,  Kiyohide Sakai ,  Yasuharu Koyata

Inventor： Takayuki Yanagisawa ,  Yoshihito Hirano ,  Syuhei Yamamoto ,  Masao Imaki ,  Kiyohide Sakai ,  Yasuharu Koyata

IPC: H01S3/04

CPC classification number: H01S3/0632 ,  H01S3/0405 ,  H01S3/0612 ,  H01S3/08072 ,  H01S3/094053 ,  H01S3/09415 ,  H01S3/109

Abstract: Provided is a device capable of oscillating a plurality of oscillation modes within a laser medium for obtaining a fundamental wave output which is easy in output scaling and high in luminance, thereby enabling a second harmonic conversion which is high in efficiency. The device includes: a laser medium (5) that is planar, has a waveguide structure in a thickness direction of a cross-section that is perpendicular to an optical axis (6), and has a cyclic lens effect in a direction perpendicular to the optical axis (6) and the thickness direction; a clad (4) that is bonded onto one surface of the laser medium (5); and heat sink (3) that is bonded onto one surface side of the laser medium (5) through the clad (4), and in the device, a laser oscillation includes a laser oscillation that oscillates in a waveguide mode of the laser medium (5), and a laser oscillation that oscillates in a plurality of resonator modes that are generated by a cyclic lens effect of the laser medium (5).

Abstract translation: 提供了一种能够在激光介质内振荡多个振荡模式的装置，用于获得输出缩放容易且亮度高的基波输出，从而实现效率高的二次谐波转换。 该装置包括：平面的激光介质（5），在与光轴（6）垂直的横截面的厚度方向上具有波导结构，并且在垂直于光轴的方向上具有循环透镜效应 光轴（6）和厚度方向; 在激光介质（5）的一个表面上结合的包层（4）; 以及通过包层（4）结合到激光介质（5）的一个表面侧的散热器（3），并且在该器件中，激光振荡包括以激光介质的波导模式振荡的激光振荡（ 以及以由激光介质（5）的循环透镜效应产生的多个谐振器模式振荡的激光振荡。

公开(公告)号：US20100189151A1

公开(公告)日：2010-07-29

申请号：US12669966

申请日：2007-07-27

Applicant: Takayuki Yanagisawa ,  Yoshihito Hirano ,  Shuhei Yamamoto ,  Yasuharu Koyata

Inventor： Takayuki Yanagisawa ,  Yoshihito Hirano ,  Shuhei Yamamoto ,  Yasuharu Koyata

IPC: H01S5/327 ,  H01S5/10

CPC classification number: H01S3/0632 ,  H01S3/0612 ,  H01S3/0625 ,  H01S3/10061 ,  H01S3/1308 ,  H01S3/1611 ,  H01S3/1673

Abstract: A planar waveguide laser device forms a waveguide by a plate-like laser medium having birefringence and clad attached to at least one of the surfaces of the laser medium perpendicular to its thickness direction, amplifies laser light by a gain produced by excitation light incident on the laser medium, and performs laser oscillation. The laser medium is formed of a material having an optic axis on a cross section perpendicular to the light axis, which is the laser travelling direction. The clad is formed of a material having a refractive index in a range between refractive indexes of two polarized lights that travel along the light axis in the laser medium and have oscillation surfaces that are orthogonal to each other. The planar waveguide laser device readily oscillates linearly polarized laser light.

Abstract translation: 平面波导激光器件通过具有双折射和包层的板状激光介质形成波导，激光介质垂直于其厚度方向附着在激光介质的至少一个表面上，通过由入射到其上的激发光产生的增益来放大激光 激光介质，进行激光振荡。 激光介质由在垂直于作为激光行进方向的光轴的横截面上具有光轴的材料形成。 包层由折射率在激光介质中沿着光轴行进的两个偏振光的折射率之间的范围内的材料形成，并且具有彼此正交的振动表面。 平面波导激光器件容易振荡线偏振激光。

公开(公告)号：US07295290B2

公开(公告)日：2007-11-13

申请号：US10520128

申请日：2003-05-30

Applicant: Takayuki Yanagisawa ,  Syuhei Yamamoto ,  Yoshihito Hirano ,  Shumpei Kameyama ,  Toshiyuki Ando

Inventor： Takayuki Yanagisawa ,  Syuhei Yamamoto ,  Yoshihito Hirano ,  Shumpei Kameyama ,  Toshiyuki Ando

IPC: G01C3/08

CPC classification number: G01S7/481 ,  G01S7/48 ,  G01S7/4811 ,  G01S7/4813 ,  G01S7/4818 ,  G01S7/484 ,  G01S7/499 ,  G01S17/06 ,  G01S17/95 ,  G02F1/39 ,  Y02A90/19

Abstract: To obtain a coherent laser radar device that realizes high reliability and the high output of a transmitted light, the device includes a first optical coupler that branches a laser beam from a laser source into two lights, a local light and a transmitted light, an optical modulator that modulates the transmitted light, a space type optical amplifier that amplifies the modulated transmitted light, a transmitting/receiving optical system that applies the amplified transmitted light toward a target and receives a scattered light from the target, a transmitting/receiving light splitting device that splits the transmitted light and the received light, a second optical coupler that mixes the local light and the split received light together, a photodetector that detects heterodyne of a mixed light, a beat signal amplifier that amplifies a detected signal, a signal processing device that processes an amplified signal, and a display device that displays a processed result. The first and second optical couplers and an optical modulator are structured by polarization maintained type optical elements, and an optical path that extends from the laser source to the space type optical amplifier through the first optical coupler, an optical path that extends from the transmitting/receiving light splitting device to the photodetector through the second optical coupler, and an optical path that extends from the first optical coupler to the second optical coupler are connected by polarization maintained type single mode optical fibers.

Abstract translation: 为了获得实现高可靠性和透射光的高输出的相干激光雷达装置，该装置包括第一光耦合器，其将来自激光源的激光束分成两个光，局部光和透射光，光学 调制透射光的调制器，放大经调制的透射光的空间型光放大器，将放大的透射光施加到目标并接收来自目标的散射光的发射/接收光学系统，发射/接收分光装置 将透射光和接收光分开的第二光耦合器，将局部光和分离的接收光混合在一起的第二光耦合器，检测混合光的外差的光电检测器，放大检测信号的拍频信号放大器，信号处理装置 处理放大信号，以及显示处理结果的显示装置。 第一和第二光耦合器和光调制器由偏振维持型光学元件构成，以及通过第一光耦合器从激光源延伸到空间型光放大器的光路，从发射/ 通过所述第二光耦合器将光分离装置接收到所述光电检测器，并且从所述第一光耦合器延伸到所述第二光耦合器的光路通过偏振维持型单模光纤连接。

公开(公告)号：US07042919B2

公开(公告)日：2006-05-09

申请号：US10343938

申请日：2001-06-21

Applicant: Takayuki Yanagisawa ,  Yoshihito Hirano

Inventor： Takayuki Yanagisawa ,  Yoshihito Hirano

IPC: H01S3/091

CPC classification number: H01S3/07 ,  H01S3/042 ,  H01S3/0606 ,  H01S3/08072 ,  H01S3/08095 ,  H01S3/0813 ,  H01S3/0941 ,  H01S3/23 ,  H01S3/2316

Abstract: A pumping module is provided with a first square rod group including a first square rod having two heat sinking surfaces normal to a direction of y axis perpendicular to an optical axis, and a second square rod having two heat sinking surfaces normal to a direction of x axis perpendicular to the optical axis and the direction of the y axis, and a second square rod group including a third square rod having two heat sinking surfaces normal to the direction of the y axis and a fourth square rod having two heat sinking surfaces normal to the direction of the x axis. A polarization rotator is disposed between the first and second square rod groups, for rotating a polarization of laser light passing therethrough by 90 degrees.

Abstract translation: 泵送模块设置有第一方棒组，其包括具有垂直于垂直于光轴的y轴方向的两个散热表面的第一方棒，以及具有垂直于x方向的两个散热表面的第二方棒 以及第二方棒组，其包括具有垂直于y轴方向的两个散热表面的第三方棒，以及具有与所述y轴方向垂直的两个散热表面的第四方棒 x轴的方向。 偏振旋转器设置在第一和第二方棒组之间，用于将通过其的激光的偏振旋转90度。

公开(公告)号：US20150016484A1

公开(公告)日：2015-01-15

申请号：US14374696

申请日：2012-03-19

Applicant: Kyosuke Kuramoto ,  Takayuki Yanagisawa ,  Yoshihito Hirano

Inventor： Kyosuke Kuramoto ,  Takayuki Yanagisawa ,  Yoshihito Hirano

IPC: H01S5/04

CPC classification number: H01S5/041 ,  G02F1/377 ,  G02F2001/3509 ,  H01S3/0401 ,  H01S3/0405 ,  H01S3/0612 ,  H01S3/0615 ,  H01S3/0621 ,  H01S3/0625 ,  H01S3/0627 ,  H01S3/09415 ,  H01S3/109 ,  H01S3/1611 ,  H01S3/1673 ,  H01S2301/02

Abstract: An end surface 3b of a solid-state laser element 3 is sloped in such a way that, assuming that laser light is incident upon air from the end surface, an angle of incidence which a normal to an inner side of the end surface forms with a traveling direction of the laser light substantially matches the Brewster angle at the incidence plane, an end surface 4a of a wavelength conversion element 4 is sloped in such a way that, assuming that the laser light is incident upon air from the end surface, an angle of incidence which a normal to an inner side of the end surface forms with a traveling direction of the laser light substantially matches the Brewster angle at the incidence plane, and the end surface 3b and the end surface 4b are arranged in such a way as to be opposite to each other.

Abstract translation: 固体激光元件3的端面3b以这样的方式倾斜，即假设激光从端面入射到空气上，与端面的内侧垂直的入射角与 激光的行进方向基本上与入射面处的布鲁斯特角度匹配，波长转换元件4的端面4a倾斜，假设激光从端面入射到空气上， 与激光的行进方向形成的端面的内侧的法线的入射角基本上与入射面处的布鲁斯特角度匹配，端面3b和端面4b以如下方式配置： 相互对立。

公开(公告)号：US20140233013A1

公开(公告)日：2014-08-21

申请号：US14347938

申请日：2012-12-07

Applicant: Takeshi Sakimura ,  Takayuki Yanagisawa ,  Shumpei Kameyama ,  Toshiyuki Ando ,  Yoshihito Hirano

Inventor： Takeshi Sakimura ,  Takayuki Yanagisawa ,  Shumpei Kameyama ,  Toshiyuki Ando ,  Yoshihito Hirano

IPC: G01S17/10

CPC classification number: G01S17/102 ,  G01S7/4815 ,  G01S7/4818 ,  G01S7/484 ,  G01S17/107 ,  G01S17/58 ,  G01S17/95 ,  Y02A90/19

Abstract: A lidar includes CW laser light sources that oscillate CW laser light rays with wavelengths different from each other; an optical multiplexing coupler that mixes the CW laser light rays oscillated by the CW laser light sources; an optical branching coupler that splits the CW laser light passing through the mixing by the optical multiplexing coupler; a light modulator that modulates first CW laser light split by the optical branching coupler; and an optical fiber amplifier that amplifies the laser light modulated by the light modulator, in which a transmit-receive optical system irradiates a target with the laser light amplified by the optical fiber amplifier, and receives scattered light of the laser light by the target.

Abstract translation: 激光雷达包括CW激光光源，其振荡具有彼此不同波长的CW激光光线; 光复用耦合器，其混合由CW激光光源振荡的CW激光; 光分路耦合器，其通过光复用耦合器分离通过混合的CW激光; 调制由光分路耦合器分离的第一CW激光的光调制器; 以及放大由光调制器调制的激光的光纤放大器，其中发射接收光学系统用由光纤放大器放大的激光照射目标，并且由目标接收激光的散射光。