公开(公告)号：US5387998A

公开(公告)日：1995-02-07

申请号：US76666

申请日：1993-06-15

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

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

IPC分类号： G02F1/37 ,  G02F1/35 ,  G02F1/377 ,  H01S3/06 ,  H01S3/1055 ,  H01S3/109 ,  H01S5/06 ,  H01S5/065 ,  H01S5/068 ,  H01S5/14

CPC分类号： H01S3/109 ,  G02F1/377 ,  G02F2001/3548 ,  G02F2001/372 ,  H01S5/065 ,  H01S5/141

摘要： A shorter wavelength light generating apparatus consists of a semiconductor laser for initially radiating various modes of coherent light including a required mode of coherent light, a reflection type of diffraction grating for diffracting and reflecting the various modes of coherent light to selectively feed back the required mode of coherent light to the semiconductor laser which is induced by the coherent light fed back to dominantly radiate the required mode of coherent light, and an optical wavelength type of wavelength converting device for converting a part of the required mode of coherent light radiated from the semiconductor laser into shorter wavelength light. The required mode of coherent light not converted is radiated to the diffraction grating. Accordingly, even though the various modes of coherent light are initially radiated from the semiconductor laser, the required mode of coherent light is dominantly radiated from the semiconductor laser after a short time. Therefore, the shorter wavelength light is stably output while stabilizing the wavelength of the shorter wavelength light.

摘要翻译： 较短波长的发光装置由半导体激光器组成，用于最初辐射包括所需相干光的各种相干光的各种模式，用于衍射和反射各种相干光模式的衍射光栅的反射型，以选择性地反馈所需的模式 由相干光引起的相干光反射以主要辐射相干光的所需模式;以及光波长类型的波长转换装置，用于转换从半导体辐射的所需相干光的一部分模式 激光进入较短波长的光。 未转换的相干光的所需模式被辐射到衍射光栅。 因此，尽管相干光的各种模式最初从半导体激光器辐射，但在短时间之后主要从半导体激光器辐射相干光的所需模式。 因此，在稳定短波长光的波长的同时，较短波长的光稳定地输出。

公开(公告)号：US07570677B2

公开(公告)日：2009-08-04

申请号：US11965170

申请日：2007-12-27

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：US20080107140A1

公开(公告)日：2008-05-08

申请号：US11965170

申请日：2007-12-27

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 LiTaO.sub.3 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.

摘要翻译： 在LiTaO 3衬底1中形成畴反转层3之后，形成光波导。 通过对由此形成的光波长转换元件进行低温退火，形成稳定的质子交换层8，在高温退火时产生的折射率的升高降低，从而提供稳定的光波长转换元件。 因此，相位匹配波长变得恒定，并且消除了谐波输出的变化。 因此，对于利用非线性光学效应的光波长转换元件，提供了高度可靠的元件。

公开(公告)号：US07101723B2

公开(公告)日：2006-09-05

申请号：US10712086

申请日：2003-11-13

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： H01L21/00

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.

摘要翻译： 在LiTaO 3衬底1中形成畴反转层3之后，形成光波导。 通过对由此形成的光波长转换元件进行低温退火，形成稳定的质子交换层8，在高温退火时产生的折射率的升高降低，从而提供稳定的光波长转换元件。 因此，相位匹配波长变得恒定，并且消除了谐波输出的变化。 因此，对于利用非线性光学效应的光波长转换元件，提供了高度可靠的元件。

公开(公告)号：US06323990B1

公开(公告)日：2001-11-27

申请号：US09247500

申请日：1999-02-10

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

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

IPC分类号： G02F137

CPC分类号： H01S5/0687 ,  G02F2001/3548 ,  H01S3/109 ,  H01S5/0092 ,  H01S5/02252 ,  H01S5/06256 ,  H01S5/1039 ,  H01S5/141

摘要： A laser beam as fundamental waves which is emitted from a distribution Bragg reflection (DBR) semiconductor laser is incident on an optical waveguide of a light wavelength conversion device in which domain-inverted regions and the optical waveguide are formed in an LiTaO3 substrate. The wavelength of the incident laser beam is then converted so as to obtain higher harmonic waves such as blue light. In the conversion, a drive current to be applied to a DBR portion of the DBR semiconductor laser is changed so as to change an oscillating wavelength of the DBR semiconductor laser, thereby matching the oscillating wavelength with a phase-matched wavelength of the light wavelength conversion device. Thus, the generation of the harmonic waves to be output is stably controlled.

摘要翻译： 作为从分布布拉格反射（DBR）半导体激光器发射的基波的激光束入射到其中在LiTaO 3衬底中形成畴反转区域和光波导的光波长转换器件的光波导上。 然后将入射激光束的波长转换为获得诸如蓝光的高次谐波。 在该转换中，改变施加到DBR半导体激光器的DBR部分的驱动电流，以改变DBR半导体激光器的振荡波长，从而使振荡波长与光波长转换的相位匹配波长匹配 设备。 因此，稳定地控制要输出的谐波的产生。

公开(公告)号：US06261858B1

公开(公告)日：2001-07-17

申请号：US09616545

申请日：2000-07-14

申请人： Yasuo Kitaoka ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

发明人： Yasuo Kitaoka ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

IPC分类号： H01L21301

CPC分类号： H01S5/06256 ,  G02B6/12004 ,  G02B6/4202 ,  G02B6/4224 ,  G02B6/423 ,  G02B6/4231 ,  G02B6/4238 ,  G02B6/4249 ,  G02F1/3775 ,  H01L2224/48463 ,  H01S5/0092 ,  H01S5/0224 ,  H01S5/02268 ,  H01S5/02272 ,  H01S5/02284 ,  H01S5/02446 ,  H01S5/125

摘要： A wavelength-variable semiconductor laser includes: a submount; and a semiconductor laser chip being mounted onto the submount and having at least an active layer region and a distributed Bragg reflection region, wherein the semiconductor laser chip is mounted onto the submount in such a manner that an epitaxial growth surface thereof faces the submount and a heat transfer condition of the active layer region is different from a heat transfer condition of the distributed Bragg reflection region. Moreover, an optical integrated device includes at least a semiconductor laser and an optical waveguide device both mounted on a submount, wherein the semiconductor laser is the wavelength-variable semiconductor laser as set forth above.

摘要翻译： 波长可变半导体激光器包括：基座; 以及将半导体激光芯片安装在所述基座上并且具有至少一个有源层区域和分布式布拉格反射区域，其中所述半导体激光器芯片以使其外延生长表面面向所述基座的方式安装到所述基座上，并且 有源层区域的传热条件与分布式布拉格反射区域的传热条件不同。 此外，光学集成器件至少包括半导体激光器和安装在基座上的光波导器件，其中半导体激光器是如上所述的波长可变半导体激光器。

公开(公告)号：US5960259A

公开(公告)日：1999-09-28

申请号：US937131

申请日：1997-09-24

申请人： Yasuo Kitaoka ,  Kazuhisa Yamamoto ,  Makoto Kato ,  Tomoaki Uno ,  Kiminori Mizuuchi ,  Kenichi Nishiuchi

发明人： Yasuo Kitaoka ,  Kazuhisa Yamamoto ,  Makoto Kato ,  Tomoaki Uno ,  Kiminori Mizuuchi ,  Kenichi Nishiuchi

IPC分类号： G02B6/42 ,  G02F1/37 ,  H01S5/022 ,  H01S5/06 ,  H01S5/0625 ,  H01S5/0683 ,  H01S5/0687 ,  H01L21/00 ,  H01L21/44 ,  H01L21/48 ,  H01L21/50

CPC分类号： H01S5/0687 ,  G02B6/42 ,  G02B6/4257 ,  G02B6/4272 ,  H01S5/06256 ,  G02B6/4213 ,  G02B6/4224 ,  G02B6/4271 ,  G02F1/37 ,  H01S5/0092 ,  H01S5/02252 ,  H01S5/02268 ,  H01S5/02272 ,  H01S5/0612 ,  H01S5/06837

摘要： A light generating apparatus includes: a submount; a semiconductor laser chip mounted on the submount; a substrate which is mount on the submount and includes an optical waveguide; and a substance having a predetermined thickness which is disposed between the semiconductor laser chip and the substrate. In an oscillation wavelength stabilizing apparatus for a light source, the light source is a semiconductor laser which includes: an active region for providing gain; and a distributed Bragg reflection (DBR) region for controlling an oscillation wavelength. The apparatus includes a control section which monotonously varies, in a first direction, a DBR current to be input to the DBR region while detecting the oscillation wavelength of an output light of the semiconductor laser so as to detect a DBR current value I.sub.o corresponding to a predetermined wave-length value, and then monotonously varies the DBR current in a second direction which is opposite the first direction beyond the detected value I.sub.o and then monotonously varies the DBR current in the first direction again to set the DBR current at the detected value I.sub.o, thereby fixing the oscillation wavelength of the semiconductor laser chip at the predetermined wavelength value.

摘要翻译： 一种发光装置，包括：底座; 安装在底座上的半导体激光芯片; 基板，其安装在所述基座上并且包括光波导; 以及设置在半导体激光芯片和基板之间的具有预定厚度的物质。 在用于光源的振荡波长稳定装置中，光源是半导体激光器，其包括：用于提供增益的有源区; 以及用于控制振荡波长的分布式布拉格反射（DBR）区域。 该装置包括控制部分，其在检测半导体激光器的输出光的振荡波长的同时，在第一方向上单向地变化要输入到DBR区域的DBR电流，以便检测对应于所述半导体激光器的DBR电流值Io 预定波长值，然后在与第一方向相反的第二方向上将DBR电流单调变化超过检测值Io，然后再次单向地改变第一方向上的DBR电流，以将DBR电流设定在检测值Io 从而将半导体激光器芯片的振荡波长固定在预定波长值。

公开(公告)号：US08317333B2

公开(公告)日：2012-11-27

申请号：US13204925

申请日：2011-08-08

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： G03B21/26

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 reflects emission beams from a red laser light source, a green laser light source and a blue laser light source and scans in a 2-dimensional direction. Diffusion plates diffuse the respective light beams scanned in the 2-dimensional direction to introduce them to corresponding spatial light modulation elements. The respective spatial light modulation elements modulate the respective lights in accordance with video signals of the respective colors. A dichroic prism multiplexes the lights of the three colors after the modulation and introduces the multiplexed lights to a projection lens so that a color image is displayed on a screen. 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： 二维光束扫描单元反射来自红色激光光源，绿色激光光源和蓝色激光光源的发射光束，并在二维方向上进行扫描。 扩散板将在二维方向上扫描的各个光束扩散，将它们引入相应的空间光调制元件。 各个空间光调制元件根据各种颜色的视频信号调制各个光。 二向色棱镜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，使得彩色图像显示在屏幕上。 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：US08016428B2

公开(公告)日：2011-09-13

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： G03B21/26

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 reflects emission beams from a red laser light source, a green laser light source and a blue laser light source and scans in a 2-dimensional direction. Diffusion plates diffuse the respective light beams scanned in the 2-dimensional direction to introduce them to corresponding spatial light modulation elements. The respective spatial light modulation elements modulate the respective lights in accordance with video signals of the respective colors. A dichroic prism multiplexes the lights of the three colors after the modulation and introduces the multiplexed lights to a projection lens so that a color image is displayed on a screen. 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： 二维光束扫描单元反射来自红色激光光源，绿色激光光源和蓝色激光光源的发射光束，并在二维方向上进行扫描。 扩散板将在二维方向上扫描的各个光束扩散，将它们引入相应的空间光调制元件。 各个空间光调制元件根据各种颜色的视频信号调制各个光。 二向色棱镜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，使得彩色图像显示在屏幕上。 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：US07382811B2

公开(公告)日：2008-06-03

申请号：US10712635

申请日：2003-11-13

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.

摘要翻译： 在LiTaO 3衬底1中形成畴反转层3之后，形成光波导。 通过对由此形成的光波长转换元件进行低温退火，形成稳定的质子交换层8，在高温退火时产生的折射率的升高降低，从而提供稳定的光波长转换元件。 因此，相位匹配波长变得恒定，并且消除了谐波输出的变化。 因此，对于利用非线性光学效应的光波长转换元件，提供了高度可靠的元件。