公开(公告)号：US5233620A

公开(公告)日：1993-08-03

申请号：US750637

申请日：1991-08-27

申请人： Keisuke Shinozaki ,  Saeko Oshiba ,  Takeshi Kamijoh

发明人： Keisuke Shinozaki ,  Saeko Oshiba ,  Takeshi Kamijoh

IPC分类号： G02F1/37 ,  H01S3/109 ,  H01S5/14

CPC分类号： H01S3/109 ,  H01S5/141

摘要： A second-harmonic generating device includes a laser diode for providing light of a fundamental wave, having end-facets at least one being an antireflection coated end-facet. An optical reflector forms an external resonator with one of the end-facets of the laser diode whereby a portion of the light from the laser diode is returned by the reflector to the laser diode. A second-harmonic generation element is disposed between the laser diode and the optical reflector, for producing a second-harmonic of the fundamental wave while the fundamental wave propagates in the second-harmonic generation element. In this way, the optical reflector determines the wavelength of the light of the fundamental wave so that the laser diode produces light with a wavelength satisfying a phase matching condition of the second-harmonic generation element.

公开(公告)号：US5504616A

公开(公告)日：1996-04-02

申请号：US310079

申请日：1994-09-22

申请人： Keisuke Shinozaki ,  Takeshi Kamijoh

发明人： Keisuke Shinozaki ,  Takeshi Kamijoh

IPC分类号： G02F1/37 ,  G02F1/35 ,  G02F1/377 ,  H01S3/063 ,  H01S3/108 ,  H01S3/109 ,  H01S5/06 ,  G02F1/39

CPC分类号： H01S3/109 ,  G02F1/3534 ,  G02F1/377 ,  G02F2001/3548 ,  H01S3/063 ,  H01S3/108 ,  H01S3/1095 ,  H01S5/14

摘要： A wavelength conversion device is formed by adding a laser-active material to a nonlinear optical crystal, and creating a phase-matching structure in the crystal. Light of a first wavelength excites the laser-active material, generating laser light of a second wavelength. Nonlinear optical effects then generate further wavelengths, such as the second harmonic of the first wavelength, the second harmonic of the second wavelength, the sum frequency of the first and second wavelengths, and the difference frequency of the first and second wavelengths. Multiple output wavelengths are thereby obtained from a single input wavelength. Because of the phase matching structure, the output is aligned in the same direction as the input light.

摘要翻译： 通过向非线性光学晶体添加激光活性材料并在晶体中产生相位匹配结构来形成波长转换器件。 第一波长的光激发激光活性材料，产生第二波长的激光。 非线性光学效应然后产生更多的波长，例如第一波长的二次谐波，第二波长的二次谐波，第一和第二波长的和频以及第一和第二波长的差频。 从而从单个输入波长获得多个输出波长。 由于相位匹配结构，输出方向与输入光方向一致。

公开(公告)号：US5247528A

公开(公告)日：1993-09-21

申请号：US787939

申请日：1991-11-05

申请人： Keisuke Shinozaki ,  Takeshi Kamijoh

发明人： Keisuke Shinozaki ,  Takeshi Kamijoh

IPC分类号： G02F1/37 ,  G02F1/377 ,  G02F1/383 ,  H01S3/109 ,  H01S5/00 ,  H01S5/06 ,  H01S5/14

CPC分类号： H01S5/14 ,  G02F1/3775 ,  G02F1/383 ,  H01S3/109 ,  H01S5/0092 ,  H01S5/028

摘要： A second harmonic generator has a semiconductor laser for a fundamental wave light source. The laser includes a semiconductor laser chip and a quasi-phase matching element optically coupled together in series. The semiconductor laser chip can lase utilizing feedback of a light from the quasi-phase matching element. The quasi-phase matching element receives a laser emitted from the semiconductor laser chip and generates a second harmonic light using the laser beam as a fundamental wave light.

公开(公告)号：US5963359A

公开(公告)日：1999-10-05

申请号：US876485

申请日：1997-06-16

申请人： Keisuke Shinozaki ,  Chang-Qing Xu ,  Hironori Sasaki

发明人： Keisuke Shinozaki ,  Chang-Qing Xu ,  Hironori Sasaki

IPC分类号： G02B3/06 ,  G02B5/00 ,  G02B27/44 ,  G02F1/35 ,  G02F1/37

CPC分类号： G02B3/06 ,  G02B27/4277 ,  G02B5/001 ,  G02B5/1876 ,  G02F1/37 ,  G02F1/3534 ,  G02F2001/3548

摘要： A non-diffracting beam generator converts coherent light from a semiconductor laser into a small, intense, non-diffracting beam, which is directed into a non-linear optical element. The non-linear optical element converts this beam to light of a different wavelength. The non-linear optical element is a bulk element, not having an internal waveguide, and not requiring precise alignment of the non-diffracting beam. The non-diffracting beam preferably has a length matching the thickness of the non-linear optical element.

摘要翻译： 非衍射光束发生器将来自半导体激光器的相干光转换成小的，强烈的非衍射光束，其被引导到非线性光学元件中。 非线性光学元件将该光束转换成不同波长的光。 非线性光学元件是不具有内部波导的体元件，并且不需要非衍射光束的精确对准。 非衍射光束优选具有与非线性光学元件的厚度相匹配的长度。

公开(公告)号：US5943161A

公开(公告)日：1999-08-24

申请号：US944299

申请日：1997-10-06

申请人： Keisuke Shinozaki ,  Chang Qing Xu ,  Hironori Sasaki

发明人： Keisuke Shinozaki ,  Chang Qing Xu ,  Hironori Sasaki

IPC分类号： G02F1/37 ,  G02F1/35 ,  H04B10/2507 ,  H04B10/40 ,  H04B10/50 ,  H04B10/60 ,  G02F1/39

CPC分类号： G02F1/3534

摘要： A wavelength conversion device employs an axicon lens to form Bessel beams of signal light and pump light, which are directed into an anisotropic nonlinear optical crystal. The signal light and pump light are both polarized parallel to the uniquely determined Z-axis of the anisotropic nonlinear optical crystal, the Z-axis being oriented perpendicular to the beam axis. The axicon lens is configured to refract the signal light and pump light at angles such that a phase matching condition is satisfied in the anisotropic nonlinear optical crystal, and converted light, also polarized parallel to the Z-axis and having a new wavelength, is generated.

摘要翻译： 波长转换装置采用旋转透镜形成信号光和泵浦光的贝塞尔束，其被引导到各向异性非线性光学晶体中。 信号光和泵浦光都与各向异性非线性光学晶体的独特确定的Z轴平行，Z轴垂直于光束轴定向。 旋转透镜被配置为折射信号光并以各向异性非线性光学晶体满足相位匹配条件的角度泵浦光，并且生成平行于Z轴并具有新波长的变换光 。

公开(公告)号：US20080044308A1

公开(公告)日：2008-02-21

申请号：US11612044

申请日：2006-12-18

申请人： Takeshi Hoji ,  Satoshi Nagao ,  Keisuke Shinozaki

发明人： Takeshi Hoji ,  Satoshi Nagao ,  Keisuke Shinozaki

IPC分类号： H02K27/02 ,  F01C1/18

CPC分类号： H02K7/116 ,  F04C2/086 ,  F04C2/18 ,  F04C14/185

摘要： A casing with housing space for retaining a first gear and a second gear in a condition where the tooth tips and both side surfaces slide, comprises a main casing which retains the first gear in a manner which allows rotation but restricts movement in the axial direction, and a gear holder which can move in the rotating shaft direction in the main casing and which rotatably retains the second gear. The main casing contains a biasing member which applies a biasing force to bias the gear holder to one side in the rotating shaft direction, and a piston which is acted on by hydraulic pressure and presses the gear holder on the other end side in the rotating shaft direction to counteract the biasing force. The gear holder is acted on by the hydraulic force from the piston to counteract the bias from the biasing member and moves in the rotating shaft direction according to the hydraulic force so that the engagement width between the first gear and the second gear which is retained by the gear holder is changed.

摘要翻译： 具有用于在齿顶和两侧表面滑动的状态下保持第一齿轮和第二齿轮的壳体的壳体包括：主壳体，其以允许旋转但限制轴向移动的方式保持第一齿轮; 以及能够在主壳体中沿着旋转轴方向移动并且可旋转地保持第二齿轮的齿轮保持器。 主壳体包括施加偏置力以将齿轮架偏置在旋转轴方向上的一侧的偏置构件，以及通过液压作用的活塞，并且将旋转轴中的另一端侧的齿轮保持器 方向来抵消偏置力。 齿轮保持器通过来自活塞的液压力作用，以抵消来自偏置构件的偏压，并且根据液压力在旋转轴方向上移动，使得第一齿轮和第二齿轮之间的接合宽度由 齿轮架更换。

公开(公告)号：US5946129A

公开(公告)日：1999-08-31

申请号：US920884

申请日：1997-08-29

申请人： Chang-Qing Xu ,  Hideaki Okayama ,  Keisuke Shinozaki

发明人： Chang-Qing Xu ,  Hideaki Okayama ,  Keisuke Shinozaki

IPC分类号： H01S3/109 ,  H01S5/10 ,  H01S5/50 ,  G02F1/39

CPC分类号： H01S3/109 ,  H01S5/1071 ,  H01S5/50

摘要： A wavelength conversion apparatus has an optical amplifier, a wavelength converter, and an optical coupler coupled to form an optical ring resonator. The optical amplifier supplies pump light. The wavelength converter generates converted light, either from the pump light alone or by interaction between the pump light and signal light supplied from a signal source. The optical coupler extracts the converted light. The optical ring resonator preferably includes a tunable optical bandpass filter that defines the wavelength of the pump light. The optical coupler may also couple the signal light into the optical ring resonator, preferably through a polarization beam splitter and at least one polarization rotator, making the apparatus insensitive to the polarization of the signal light.

摘要翻译： 波长转换装置具有耦合以形成光环谐振器的光放大器，波长转换器和光耦合器。 光放大器提供泵浦光。 波长转换器可以单独从泵浦光或通过泵浦光与从信号源提供的信号光之间的相互作用产生转换的光。 光耦合器提取转换的光。 光环谐振器优选地包括限定泵浦光的波长的可调光学带通滤波器。 光耦合器还可以将信号光耦合到光环谐振器中，优选地通过偏振分束器和至少一个偏振旋转器，使得该装置对信号光的偏振不敏感。

公开(公告)号：US5121250A

公开(公告)日：1992-06-09

申请号：US645470

申请日：1991-01-24

申请人： Keisuke Shinozaki ,  Toshio Nonaka

发明人： Keisuke Shinozaki ,  Toshio Nonaka

IPC分类号： G02F1/37 ,  G02F1/377

CPC分类号： G02F1/3775 ,  G02F2202/20

摘要： An element for generating second-harmonic waves of a short wavelength from a fundamental wave emitting from a semiconductor laser and the like. The element includes a substrate made of a ferroelectric crystal, a second-harmonic wave generator for generating a second-harmonic wave from a fundamental wave entered therein, and periodically arranged portions formed in a front stage region and a rear stage region of the element. The periodic portions or structures, each have pairs of parts or regions of a high optical refractive index and of a low optical refractive index so as to confine the fundamental waves in the second-harmonic wave generating portion. These regions have various kinds of material diffused or introduced therein and of a thickness. According to another example of the element, the sign of a nonlinear optical coefficient of the region is periodically reversed and the region satisfies a quasi-phase-matching condition.

摘要翻译： 用于从半导体激光器等发射的基波产生短波长的二次谐波的元件。 元件包括由铁电晶体制成的衬底，用于从其中输入的基波产生二次谐波的二次谐波发生器，以及形成在元件的前级区域和后级区域中的周期性地布置的部分。 周期性部分或结构各自具有高折射率和低折射率的部分或多个区域对，以将基波限制在二次谐波产生部分中。 这些区域具有扩散或引入其中并具有厚度的各种材料。 根据该元件的另一示例，区域的非线性光学系数的符号被周期性地反转，并且该区域满足准相位匹配条件。

公开(公告)号：US20100086422A1

公开(公告)日：2010-04-08

申请号：US12596766

申请日：2007-08-10

申请人： Keisuke Shinozaki

发明人： Keisuke Shinozaki

IPC分类号： F04C14/20

CPC分类号： F04C2/18 ,  F04C14/185

摘要： An oil pump includes a drive gear, which rotates with a drive shaft, a driven gear, which meshes with the drive gear and is supported rotatable on a driven shaft, and a casing having a pump chamber, which accommodates the drive gear and the driven gear. The casing of the gear pump is provided with an intake port and a discharge port, which are in fluid communication with the pump chamber, so that oil is sucked through the intake port and discharged through the discharge port. A gear holder is provided in the casing such that the gear holder supports the driven gear rotatable and holds both sides of the driven gear while the gear holder itself is being supported axially movable by the driven shaft. The gear holder holding the driven gear moves axially by receiving a biasing force and also a pressing force acting against the biasing force.

摘要翻译： 油泵包括驱动齿轮，该驱动齿轮与驱动轴一起旋转，从动齿轮与驱动齿轮啮合并且可以在从动轴上旋转地支撑;以及壳体，其具有容纳驱动齿轮和驱动的泵室 齿轮。 齿轮泵的壳体设置有与泵室流体连通的进气口和排出口，从而通过进气口吸入油并通过排出口排出。 齿轮保持器设置在壳体中，使得齿轮保持器支撑从动齿轮可旋转并保持从动齿轮的两侧，同时齿轮保持器本身由被驱动轴可轴向移动。 保持从动齿轮的齿轮架通过接收偏压力而轴向移动，并且还具有抵抗偏压力的按压力。

公开(公告)号：US4977569A

公开(公告)日：1990-12-11

申请号：US382294

申请日：1989-07-20

申请人： Ryozo Furukawa ,  Keisuke Shinozaki ,  Toshiaki Fukunaga

发明人： Ryozo Furukawa ,  Keisuke Shinozaki ,  Toshiaki Fukunaga

IPC分类号： H01S5/00 ,  H01S5/24 ,  H01S5/40

CPC分类号： H01S5/24 ,  H01S5/4031

摘要： An integrated phase-locked semiconductor laser wherein a plurality of waveguide paths extend in parallel to each other. A current blocking layer is formed on one of opposite major surfaces of a semiconductor substrate and is divided into a plurality of regions by a plurality of stripe-like channels. Each of the channels has a depth which reaches at least the above-mentioned major surface of the substrate. A first cladding layer covers the surface of the current blocking layer and those regions of the substrate which are exposed to the channels. A waveguide layer is deposited on the first cladding layer and has a surface opposite to the first cladding layer which is substantially flat. An active layer, a reflecting layer, a second cladding layer and a cap layer are deposited one upon another on the waveguide layer layer. The waveguide layer has an effective refractive index which sequentially decreases in the order of first regions individually associated with the plurality of channels, second regions individually associated with interchannel regions each intervening between nearby channels, and third regions located at opposite sides of the plurality of channels relatively to each other.