公开(公告)号：US20100246207A1

公开(公告)日：2010-09-30

申请号：US12161667

申请日：2006-12-05

申请人： Hiroyuki Furuya ,  Kazuhisa Yamamoto ,  Kiminori Mizuuchi

发明人： Hiroyuki Furuya ,  Kazuhisa Yamamoto ,  Kiminori Mizuuchi

IPC分类号： H01S3/30 ,  H01S3/00 ,  F21V8/00

CPC分类号： G03B21/2033 ,  G02B6/001 ,  G03B21/2093 ,  G03B33/12 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/094007 ,  H01S3/2383

摘要： There is a problem that in the connection portion between a rare-earth-doped double clad fiber and a single mode fiber, pumping light leaks in a portion having the coating, and the fiber generates heat partially with this energy and deteriorates. Also, there is another problem that the output is limited as the oscillation wavelength becomes shorter. Accordingly, in a laser light source device formed by combining a fiber laser and a fiber amplifier, by using the residual pumping light in the fiber laser as the pumping light in the fiber amplifier, it is possible to enhance the reliability by preventing the fiber deterioration caused by the residual pumping light. Further, by amplifying the output in the fiber amplifier in the latter stage without any limitation on the pumping light output, it is possible to increase an output of the oscillation light.

摘要翻译： 存在在稀土掺杂双包层光纤和单模光纤之间的连接部分中的泵浦光在具有涂层的部分中泄漏的问题，并且光纤以该能量部分地发热并劣化。 此外，还存在随着振荡波长变短而输出受到限制的另外一个问题。 因此，在通过组合光纤激光器和光纤放大器形成的激光光源装置中，通过使用光纤激光器中的残余泵浦光作为光纤放大器中的泵浦光，可以通过防止光纤劣化来提高可靠性 由残余泵浦光引起。 此外，通过在后级放大光纤放大器中的输出而对泵浦光输出没有任何限制，可以增加振荡光的输出。

公开(公告)号：US07791790B2

公开(公告)日：2010-09-07

申请号：US12092694

申请日：2006-11-01

申请人： Hiroyuki Furuya ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

发明人： Hiroyuki Furuya ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

IPC分类号： G02F1/35 ,  G02F2/02

CPC分类号： G02F1/353 ,  G02B6/02204 ,  G02F2201/305 ,  H01S3/0675 ,  H01S3/13 ,  H01S3/1317

摘要： A wavelength converter including a fiber provided with a laser active substance and formed with first and second fiber gratings embedded in the fiber, a laser light source that allows pumping light to be incident on the fiber, a laser resonator formed by optically connecting the fiber and the laser light source, and a wavelength conversion element that converts the fundamental wave of a laser beam emitted from the laser resonator into a higher harmonic wave. The fiber absorbs a part of an output of the fundamental wave or the pumping light, and heats the second fiber grating. The temperature of the second fiber grating is adjusted in accordance with an output of the higher harmonic wave outputted from the wavelength conversion element.

摘要翻译： 一种波长转换器，包括设置有激光活性物质并形成有嵌入光纤中的第一和第二光纤光栅的光纤，允许泵浦光入射到光纤上的激光源，通过光纤连接光纤和 激光光源和将从激光谐振器发射的激光束的基波转换成高次谐波的波长转换元件。 光纤吸收基波或泵浦光的输出的一部分，并加热第二光纤光栅。 根据从波长转换元件输出的高次谐波的输出来调节第二光纤光栅的温度。

公开(公告)号：US07769060B1

公开(公告)日：2010-08-03

申请号：US12066548

申请日：2006-09-13

申请人： Hiroyuki Furuya ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

发明人： Hiroyuki Furuya ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

IPC分类号： H01S3/10

CPC分类号： G03B21/2033 ,  G02F1/133621 ,  G03B21/2086 ,  H01S3/005 ,  H01S3/0405 ,  H01S3/042 ,  H01S3/0604 ,  H01S3/0627 ,  H01S3/08072 ,  H01S3/09415 ,  H01S3/109 ,  H01S3/1611 ,  H01S3/1671 ,  H01S3/1673 ,  H01S3/2383 ,  H01S5/024 ,  H01S5/02446 ,  H01S5/1014 ,  H01S5/4031

摘要： A laser light source having a semiconductor laser (102) for outputting pump light, and a laser resonator wherein a solid laser crystal (104) and a non-linear optical crystal (103) are connected by optical contact and a reflection coat (106) and a reflection coat (105) are on the opposed facets of the respective crystals. GdVO4 is the solid laser crystal (104) while LiNbO3 is the non-linear optical crystal (103), and the crystal axis of the solid laser crystal (104) is inclined with respect to the z axis of the non-linear optical crystal (103) within the z-x plane of the non-linear optical crystal (103). The thermal expansion coefficients of the solid laser crystal and of the non-linear optical crystal can be approximated to each other, thereby preventing separation of the bonded laser crystal and non-linear optical crystal due to different thermal expansion coefficients when heat is generated during laser oscillation, which stops laser oscillation.

摘要翻译： 具有用于输出泵浦光的半导体激光器（102）的激光光源和通过光学接触连接固体激光晶体（104）和非线性光学晶体（103）的激光谐振器，以及反射涂层（106） 和反射涂层（105）位于相应晶体的相对面上。 GdVO4是固体激光晶体（104），LiNbO 3是非线性光学晶体（103），固体激光晶体（104）的晶轴相对于非线性光学晶体的z轴倾斜 103）在非线性光学晶体（103）的zx平面内。 固体激光晶体和非线性光学晶体的热膨胀系数可以彼此近似，从而当激光产生热时，防止由于不同的热膨胀系数而导致的结合激光晶体和非线性光学晶体的分离 振荡，停止激光振荡。

公开(公告)号：US07738162B2

公开(公告)日：2010-06-15

申请号：US12142428

申请日：2008-06-19

申请人： Kiminori Mizuuchi ,  Hiroyuki Furuya ,  Koichi Kusukame ,  Kenichi Kasazumi ,  Kazuhisa Yamamoto

发明人： Kiminori Mizuuchi ,  Hiroyuki Furuya ,  Koichi Kusukame ,  Kenichi Kasazumi ,  Kazuhisa Yamamoto

IPC分类号： G02F1/35

CPC分类号： G02F1/3775 ,  G02F2001/3503 ,  G02F2001/3507 ,  G02F2201/16

摘要： A short wavelength light source is provided with a fundamental wave light source for generating a fundamental wave, and a plurality of wavelength conversion elements made of nonlinear optical crystals having periodic polarization-inversion structures and adapted to convert a part of the fundamental wave into a second harmonic, and the nonlinear optical crystals of the plurality of wavelength conversion elements are different in material or composition. By converting the fundamental wave from the fundamental wave light source by the plurality of wavelength conversion elements, the generation of a thermal lens effect caused by light absorption can be suppressed to improve a high output resistance.

摘要翻译： 短波长光源设置有用于产生基波的基波光源，以及由具有周期性极化反转结构的非线性光学晶体制成的多个波长转换元件，并且适于将基波的一部分转换成第二 谐波，并且多个波长转换元件的非线性光学晶体的材料或组成不同。 通过由多个波长转换元件转换基波光源的基波，可以抑制由光吸收引起的热透镜效应的产生，从而提高高的输出电阻。

公开(公告)号：US07733927B2

公开(公告)日：2010-06-08

申请号：US11812732

申请日：2007-06-21

申请人： Hiroyuki Furuya ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

发明人： Hiroyuki Furuya ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

IPC分类号： H01S3/10

CPC分类号： H01S3/0675 ,  H01S3/005 ,  H01S3/06716 ,  H01S3/0809 ,  H01S3/0826 ,  H01S3/09415 ,  H01S3/1053 ,  H01S3/1055 ,  H01S3/1618 ,  H04N9/3129

摘要： The present invention concerns a laser light source device capable of multiwavelength oscillation. This laser light source device is provided with a laser light source; a laser cavity including a fiber, a first fiber grating provided at a side of the fiber toward the laser light source and having a plurality of reflection peaks, and a second fiber grating provided at a light emission end of the fiber and having a plurality of reflection peaks: a wavelength converter for converting a fundamental wave emitted from the laser cavity into a harmonic wave; a reflection wavelength varying unit capable of shifting the reflection wavelengths of the reflection peaks of the second fiber grating; and a controller for controlling phase matching conditions of the wavelength converter. Intervals between adjacent reflection peaks of the first fiber grating are different from those between adjacent reflection peaks of the second fiber grating.

摘要翻译： 本发明涉及能够进行多波长振荡的激光光源装置。 该激光光源装置设置有激光光源; 包括光纤的激光腔，设置在所述光纤的朝向所述激光光源的一侧并具有多个反射峰的第一光纤光栅，以及设置在所述光纤的发光端的第二光纤光栅，并且具有多个 反射峰：用于将从激光腔发射的基波转换为谐波的波长转换器; 反射波长变化单元，其能够移动第二光纤光栅的反射峰的反射波长; 以及用于控制波长转换器的相位匹配条件的控制器。 第一光纤光栅的相邻反射峰之间的间隔与第二光纤光栅的相邻反射峰之间的间隔不同。

公开(公告)号：US20100103966A1

公开(公告)日：2010-04-29

申请号：US12532213

申请日：2009-01-20

申请人： Tetsuro Mizushima ,  Hiroyuki Furuya ,  Shinichi Shikii ,  Koichi Kusukame ,  Nobuyuki Horikawa ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

发明人： Tetsuro Mizushima ,  Hiroyuki Furuya ,  Shinichi Shikii ,  Koichi Kusukame ,  Nobuyuki Horikawa ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

IPC分类号： H01S3/10

CPC分类号： G02F1/37 ,  G02B6/0028 ,  G02B6/0078 ,  G02F1/0147 ,  G02F1/29 ,  G02F2001/3503 ,  G02F2001/3546 ,  G02F2001/372 ,  G02F2201/17 ,  G02F2201/34 ,  G02F2203/05 ,  H01S5/0092 ,  H01S5/0687 ,  H04N9/3161

摘要： A wavelength conversion laser is provided with a pair of fundamental wave reflecting surfaces for reflecting a fundamental wave to define a plurality of fundamental wave paths passing a wavelength conversion element at different angles, and a control unit for controlling wavelength conversion efficiencies so that the wavelength conversion efficiency on a specific one of the plurality of fundamental wave paths extending in different directions between the pair of fundamental wave reflecting surfaces is highest.

摘要翻译： 波长转换激光器设置有一对基波反射表面，用于反射基波以限定以不同角度通过波长转换元件的多个基本波径;以及控制单元，用于控制波长转换效率，使得波长转换 在一对基波反射面之间沿不同方向延伸的多个基波路径中的特定一个基波波长上的效率最高。

公开(公告)号：US07692848B2

公开(公告)日：2010-04-06

申请号：US12090064

申请日：2006-10-11

申请人： Hiroyuki Furuya ,  Kazuhisa Yamamoto ,  Kiminori Mizuuchi

发明人： Hiroyuki Furuya ,  Kazuhisa Yamamoto ,  Kiminori Mizuuchi

IPC分类号： G02F1/35 ,  G02F2/02

CPC分类号： G02F1/3775 ,  G02B6/4206 ,  G02B6/4214 ,  G02F1/133615 ,  G02F1/3532 ,  G02F2202/20 ,  G02F2203/21 ,  H04N9/3161

摘要： A wavelength conversion module includes: a first fundamental wave propagation optical fiber for propagating a fundamental wave emitted from a laser light source; a first wavelength conversion element, optically connected to the first fundamental wave propagation optical fiber, for converting the fundamental wave emitted from the first fundamental wave propagation optical fiber into a harmonic wave; and a first harmonic propagation optical fiber, optically connected to the first wavelength conversion element, for propagating the harmonic wave emitted from the first wavelength conversion element, wherein the core diameter of the first harmonic propagation optical fiber is 0.5 to 0.9 times as large as the core diameter of first fundamental wave propagation optical fiber.

摘要翻译： 波长转换模块包括：第一基波传播光纤，用于传播从激光光源发射的基波; 第一波长转换元件，光连接到第一基波传播光纤，用于将从第一基波传播光纤发射的基波转换成谐波; 以及第一谐波传播光纤，其与第一波长转换元件光学连接，用于传播从第一波长转换元件发射的谐波，其中一次谐波传播光纤的纤芯直径为该第一波长转换元件的核心直径的0.5至0.9倍 第一基波传播光纤的芯径。

公开(公告)号：US20100020291A1

公开(公告)日：2010-01-28

申请号：US11917986

申请日：2006-06-15

申请人： Kenichi Kasazumi ,  Yasuo Kitaoka ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

发明人： Kenichi Kasazumi ,  Yasuo Kitaoka ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

IPC分类号： G03B21/14

CPC分类号： G02B27/149 ,  G02B17/004 ,  G02B26/0808 ,  G02B27/0905 ,  G02B27/0933 ,  G02B27/0944 ,  G02B27/102 ,  G02B27/1046 ,  G02B27/1093 ,  G02B27/145 ,  G03B21/14 ,  G03B21/2033 ,  G03B21/208 ,  G03B33/12 ,  H04N9/3161

摘要： A 2-dimensional beam scan unit (2) reflects emission beams from a red laser light source (1a), a green laser light source (1b) and a blue laser light source (1c) and scans in a 2-dimensional direction. Diffusion plates (3a, 3b, 3c) diffuse the respective light beams scanned in the 2-dimensional direction to introduce them to corresponding spatial light modulation elements (5a, 5b, 5c). The respective spatial light modulation elements (5a, 5b, 5c) modulate the respective lights in accordance with video signals of the respective colors. A dichroic prism (6) multiplexes the lights of the three colors after the modulation and introduces the multiplexed lights to a projection lens (7) so that a color image is displayed on a screen (8). Since the 2-dimensional light emitted from the beam scan unit is diffused to illuminate the spatial light modulation element, it is possible to change the optical axis of the beam emerging from the light diffusion member for irradiating the spatial light modulation element moment by moment, thereby effectively suppressing speckle noise.

摘要翻译： 二维光束扫描单元（2）反射来自红色激光光源（1a），绿色激光光源（1b）和蓝色激光光源（1c）的发射光束，并在二维方向扫描。 扩散板（3a，3b，3c）扩散在二维方向上扫描的各个光束，将它们引入相应的空间光调制元件（5a，5b，5c）。 各个空间光调制元件（5a，5b，5c）根据各种颜色的视频信号调制各个光。 分色棱镜（6）在调制之后复用三种颜色的光，并将多路复用的光引入投影透镜（7），使得彩色图像显示在屏幕（8）上。 由于从射束扫描单元发射的二维光被散射以照射空间光调制元件，所以可以改变从光漫射构件出射的用于照射空间光调制元件的光束的光轴， 从而有效抑制斑点噪声。

公开(公告)号：US07623559B2

公开(公告)日：2009-11-24

申请号：US12018485

申请日：2008-01-23

申请人： Kazuhisa Yamamoto ,  Kiminori Mizuuchi ,  Yasuo Kitaoka ,  Makoto Kato

发明人： Kazuhisa Yamamoto ,  Kiminori Mizuuchi ,  Yasuo Kitaoka ,  Makoto Kato

IPC分类号： H01S3/10

CPC分类号： G02F1/37 ,  G02F1/3558 ,  G02F1/3775 ,  G02F2203/60 ,  H01S3/09415 ,  H01S3/109 ,  H01S3/23 ,  H01S5/0092 ,  H01S5/02 ,  H01S5/40 ,  H01S5/4087

摘要： After forming domain inverted layers 3 in an LiTaO3 substrate 1, an optical waveguide is formed. By performing low-temperature annealing for the optical wavelength conversion element thus formed, a stable proton exchange layer 8 is formed, where an increase in refractive index generated during high-temperature annealing is lowered, thereby providing a stable optical wavelength conversion element. Thus, the phase-matched wavelength becomes constant, and variation in harmonic wave output is eliminated. Consequently, with respect to an optical wavelength conversion element utilizing a non-linear optical effect, a highly reliable element is provided.

公开(公告)号：US20090262262A1

公开(公告)日：2009-10-22

申请号：US12064784

申请日：2006-08-24

申请人： Tatsuo Itoh ,  Kazuhisa Yamamoto ,  Kenichi Kasazumi ,  Kiminori Mizuuchi

发明人： Tatsuo Itoh ,  Kazuhisa Yamamoto ,  Kenichi Kasazumi ,  Kiminori Mizuuchi

IPC分类号： H04N9/31

CPC分类号： G03B21/14 ,  G03B21/2053 ,  G03B21/208 ,  H04N9/3105 ,  H04N9/3129 ,  H04N9/315 ,  H04N9/3155 ,  H04N9/3161

摘要： A projection type display apparatus is provided that is safe even when a person looks directly into a laser beam. A laser operation control unit sets the output power of at least one laser source so that intensity A (mW/mm2) of the laser beam on at least one spatial light modulation element satisfies relationship of A

摘要翻译： 即使人们直视激光束也能够安全地投射型显示装置。 激光操作控制单元设置至少一个激光源的输出功率，使得至少一个空间光调制元件上的激光束的强度A（mW / mm2）在图像侧的数值孔径B处满足A <686×2B的关系 设置照明光学系统。