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1. 发明授权

US07623559B2 Optical device, laser beam source, laser apparatus and method of producing optical device 失效
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.

2. 发明授权

US07133428B2 Optical apparatus and method for producing the same 失效
标题翻译：光学装置及其制造方法
公开(公告)号：US07133428B2
公开(公告)日：2006-11-07
申请号：US10461620
申请日：2003-06-13
申请人： Yasuo Kitaoka , Kazuhisa Yamamoto , Makoto Kato , Kiminori Mizuuchi , Kenichi Nishiuchi
发明人： Yasuo Kitaoka , Kazuhisa Yamamoto , Makoto Kato , Kiminori Mizuuchi , Kenichi Nishiuchi
IPC分类号： H01S3/00
CPC分类号： H01S5/0687 , G02B6/42 , G02B6/4201 , G02B6/4213 , G02B6/4215 , G02B6/4224 , G02B6/4257 , G02B6/4271 , G02B6/4272 , G02F1/37 , H01S5/0092 , H01S5/02252 , H01S5/02476 , H01S5/0612 , H01S5/06256 , H01S5/06837
摘要： A light generating apparatus includes: a submount; a semiconductor laser chip mounted on the submount; a substrate which is mounted 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 Io corresponding to a predetermined wavelength value, and then monotonously varies the DBR current in a second direction which is opposite the first direction beyond the detected value Io, and then monotonously varies the DBR current in the first direction again to set the DBR current at the detected value Io, 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，沿第一方向在DBR区域中单向变化DBR电流，以便检测DBR电流值I < o ，然后将DBR电流在与第一方向相反的第二方向上单调地改变超过检测值I 0，然后单调地改变DBR电流在第一方向上将DBR电流设定在检测值I ，从而将半导体激光器芯片的振荡波长固定在预定波长值。

3. 发明授权

US06914918B2 Optical device, laser beam source, laser apparatus and method of producing optical device 失效
标题翻译：光学装置，激光束源，激光装置及其制造方法
公开(公告)号：US06914918B2
公开(公告)日：2005-07-05
申请号：US09922978
申请日：2001-08-06
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： G02F1/355 , G02F1/377 , H01S3/0941 , H01S3/109 , 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。

4. 发明授权

US5301059A Short-wavelength light generating apparatus 失效
标题翻译：短波长发光装置
公开(公告)号：US5301059A
公开(公告)日：1994-04-05
申请号：US20335
申请日：1993-02-19
申请人： Yasuo Kitaoka , Kazuhisa Yamamoto , Kiminori Mizuuchi , Makoto Kato , Fumihiro Sogawa
发明人： Yasuo Kitaoka , Kazuhisa Yamamoto , Kiminori Mizuuchi , Makoto Kato , Fumihiro Sogawa
IPC分类号： H01S3/0941 , H01S3/109 , H01S5/06 , H01S5/10 , H01S5/14 , G02F1/35
CPC分类号： H01S5/141 , H01S3/08009 , H01S3/109 , H01S5/005 , H01S5/0092 , H01S5/143
摘要： A short-wavelength light generating apparatus comprising a pumping semiconductor laser and an intra-cavity solid state laser, the intra-cavity solid state laser is excited in response to a laser light beam from the semiconductor laser to generate a short-wavelength light beam to an external. Also included in the apparatus is an external grating mirror having on its one surface a reflection type diffraction grating and placed between the semiconductor laser and the intra-cavity solid state laser. The external grating mirror reflects the laser light beam from the semiconductor laser to feedback a portion of the laser light beam to said semiconductor laser so that an oscillated wavelength of the semiconductor laser becomes within a wavelength acceptance of the intra-cavity solid state laser. Further, the external grating mirror supplies a portion of the laser light beam from the semiconductor laser to the intra-cavity solid state laser. This arrangement can output a stable harmonic wave with a high efficiency.
摘要翻译：一种包括泵浦半导体激光器和腔内固体激光器的短波长发光装置，响应于来自半导体激光器的激光束激发腔内固态激光器，以产生短波长光束外部的。该装置中还包括外置光栅镜，其一面具有反射型衍射光栅，并设置在半导体激光器和腔内固态激光器之间。外部光栅镜反射来自半导体激光器的激光束，以将激光束的一部分反射到所述半导体激光器，使得半导体激光器的振荡波长变得在腔内固态激光器的波长接受范围内。此外，外部光栅镜将激光束的一部分从半导体激光器提供给腔内固态激光器。这种布置可以以高效率输出稳定的谐波。

5. 发明授权

US07295583B2 Optical device, laser beam source, laser apparatus and method of producing optical device 有权
标题翻译：光学装置，激光束源，激光装置及其制造方法
公开(公告)号：US07295583B2
公开(公告)日：2007-11-13
申请号：US10712126
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 nonlinear 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。

6. 发明授权

US5936985A Method for stabilizing output of higher harmonic waves and short wavelength laser beam source using the same 失效
公开(公告)号：US5936985A
公开(公告)日：1999-08-10
申请号：US527411
申请日：1995-09-13
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： G02F1/35 , H01S3/109 , H01S5/026 , H01S5/06 , H01S5/0625 , H01S5/0687 , H01S5/14 , H01S5/50 , H01S3/00
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 LiTaO.sub.3 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.

7. 发明授权

US5835650A Optical apparatus and method for producing the same 失效
公开(公告)号：US5835650A
公开(公告)日：1998-11-10
申请号：US746718
申请日：1996-11-15
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 , G02B6/36
CPC分类号： H01S5/0687 , G02B6/42 , G02B6/4201 , G02B6/4257 , G02B6/4272 , H01S5/06256 , G02B6/4213 , G02B6/4215 , G02B6/4224 , G02B6/4271 , G02F1/37 , H01S5/0092 , H01S5/02252 , H01S5/02476 , 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 mounted 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.0 corresponding to a predetermined wavelength value, and then monotonously varies the DBR current in a second direction which is opposite the first direction beyond the detected value I.sub.0, and then monotonously varies the DBR current in the first direction again to set the DBR current at the detected value I.sub.0, thereby fixing the oscillation wavelength of the semiconductor laser chip at the predetermined wavelength value.

8. 发明授权

US5452312A Short-wavelength laser light source and optical information processing aparatus 失效
标题翻译：短波长激光光源和光信息处理装置
公开(公告)号：US5452312A
公开(公告)日：1995-09-19
申请号：US322190
申请日：1994-10-12
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： G02F1/377 , G11B7/125 , H01S3/109 , H01S5/06 , H01S5/14 , H01S3/30
CPC分类号： G11B7/127 , G02F1/3775 , G11B7/126 , H01S3/109 , H01S5/0092 , H01S5/022 , H01S5/02248 , H01S5/0428 , H01S5/06216 , H01S5/141
摘要： A short-wavelength laser light source having a semiconductor laser for emitting laser light is provided. The light source includes a power supply for driving the semiconductor laser and thereby causing the semiconductor laser to emit a fundamental wave, a polarization inversion-type light-wavelength converting device for generating from the fundamental wave a harmonic wave having a shorter wavelength than the fundamental wave; and laser light feedback means for feeding light of the fundamental wave lying in a selected wavelength region back to the semiconductor laser, thereby achieving oscillation wavelength locking. Said power supply supplies to the semiconductor laser a high-frequency power containing AC components oscillating in a cycle short enough to cause the semiconductor laser to emit the fundamental wave in the form of pulsed laser light.
摘要翻译：提供了具有用于发射激光的半导体激光器的短波长激光光源。光源包括用于驱动半导体激光器并由此使半导体激光器发射基波的电源，偏振反转型光波长转换装置，用于从基波产生具有比基波短的波长的谐波波; 以及用于将位于所选波长区域中的基波的光馈送回到半导体激光器的激光反馈装置，从而实现振荡波长锁定。所述电源向半导体激光器提供包含AC组件的高频功率，所述AC组件在足够短的周期内振荡，以使得半导体激光器以脉冲激光的形式发射基波。

9. 发明授权

US06590915B1 Optical apparatus and method for producing the same 失效
公开(公告)号：US06590915B1
公开(公告)日：2003-07-08
申请号：US09612091
申请日：2000-07-07
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： H01S300
CPC分类号： H01S5/0687 , G02B6/42 , G02B6/4201 , G02B6/4213 , G02B6/4215 , G02B6/4224 , G02B6/4257 , G02B6/4271 , G02B6/4272 , G02F1/37 , H01S5/0092 , H01S5/02252 , H01S5/02476 , H01S5/0612 , H01S5/06256 , H01S5/06837
摘要： A light generating apparatus includes: a submount; a semiconductor laser chip mounted on the submount; a substrate which is mounted 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 Io corresponding to a predetermined wavelength value, and then monotonously varies the DBR current in a second direction which is opposite the first direction beyond the detected value Io, and then monotonously varies the DBR current in the first direction again to set the DBR current at the detected value Io, thereby fixing the oscillation wavelength of the semiconductor laser chip at the predetermined wavelength value.

10. 发明授权

US06333943B1 Optical device, laser beam source, laser apparatus and method of producing optical device 失效
标题翻译：光学装置，激光束源，激光装置及其制造方法
公开(公告)号：US06333943B1
公开(公告)日：2001-12-25
申请号：US08973380
申请日：1998-03-16
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： H01S500
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基板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。

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