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11. 发明授权

US5744073A Fabrication of ferroelectric domain reversals 失效
标题翻译：铁电畴反转的制作
公开(公告)号：US5744073A
公开(公告)日：1998-04-28
申请号：US531280
申请日：1995-09-20
申请人： Yasukazu Nihei , Yoji Okazaki , Akinori Harada
发明人： Yasukazu Nihei , Yoji Okazaki , Akinori Harada
IPC分类号： G02F1/37 , G02B5/18 , G02F1/35 , G02F1/355 , G02F1/377 , H01S3/109 , B29D11/00 , G02B1/00
CPC分类号： G02B5/1857 , G02F1/3558 , G02F1/3775 , G02F2001/3548
摘要： A method for fabricating domain reversals in predetermined periods without the occurrence of localized variations in refractive index. Localized areas of a unipolarized ferroelectric material which is made of an LiNbO.sub.3 substrate, or the like, and possesses a nonlinear optical effect are exposed to electron beams in a predetermined pattern, so that domain reversals are defined. Thereafter, this ferroelectric material is subjected to a heat treatment at a temperature below the Curie temperature of the ferroelectric material.
摘要翻译：一种在预定周期内制造畴反转而不发生折射率局部变化的方法。由LiNbO 3衬底等制成且具有非线性光学效应的单极化铁电材料的局部区域以预定图案暴露于电子束，从而定义畴反转。然后，在低于铁电体的居里温度的温度下对该铁电体进行热处理。

12. 发明授权

US5197072A Optical wavelength converting device, and laser diode pumped solid laser 失效
标题翻译：光波长转换装置和激光二极管泵浦固体激光器
公开(公告)号：US5197072A
公开(公告)日：1993-03-23
申请号：US714530
申请日：1991-06-13
申请人： Akinori Harada , Nobuharu Nozaki , Yoji Okazaki , Horoaki Hyuga
发明人： Akinori Harada , Nobuharu Nozaki , Yoji Okazaki , Horoaki Hyuga
IPC分类号： G02F1/377 , H01S3/063 , H01S3/109 , H01S5/06
CPC分类号： H01S3/109 , G02F1/377 , H01S3/0632 , H01S3/09415 , H01S3/1095
摘要： An optical wavelength converting device comprises an optical waveguide device. The optical waveguide device is provided with a waveguide, which is constituted of a solid laser medium doped with a rare earth metal and a nonlinear optical material for converting a wavelength. The solid laser medium and said nonlinear optical material are overlaid one upon the other. A cladding is formed of a material having a lower refractive index than the waveguide and accommodates the waveguide therein. Two edge faces of the optical waveguide device serve as a resonator for a laser beam, which has been produced by the solid laser medium.
摘要翻译：光波长转换装置包括光波导装置。光波导装置设置有由掺杂有稀土金属的固体激光介质和用于转换波长的非线性光学材料构成的波导。固体激光介质和所述非线性光学材料彼此重叠。包层由折射率低于波导的材料形成，并且在其中容纳波导。光波导器件的两个边缘面用作激光束的共振器，其由固体激光介质制造。

13. 发明授权

US5013129A Optical wavelength converter device and method of manufacturing same 失效
标题翻译：光波长转换器及其制造方法
公开(公告)号：US5013129A
公开(公告)日：1991-05-07
申请号：US503571
申请日：1990-04-03
申请人： Akinori Harada , Yoji Okazaki
发明人： Akinori Harada , Yoji Okazaki
IPC分类号： G02F1/35 , G02B6/122 , G02F1/355 , G02F1/37 , G02F1/377
CPC分类号： G02B6/122 , G02F1/377 , G02F2001/374
摘要： An optical wavelength converter device is in the form of a three-dimensional optical waveguide and comprises a cladding and a waveguide element embedded in the cladding and having a refractive index higher than that of the cladding. Each of the cladding and the waveguide element is made of a III - V group, mixed-crystal compound semiconductor material or a II - VI group, mixed-crystal compound semiconductor material. The cladding includes homogeneous portions covering all surfaces of the waveguide element which fully reflect the fundamental wave being guided in the waveguide element.
摘要翻译：光学波长转换器装置是三维光波导的形式，包括一个包层和一个嵌入包层中的波导元件，其折射率高于包层的折射率。每个包层和波导元件由III-V族，混合晶体化合物半导体材料或II-VI族混合晶体化合物半导体材料制成。包层包括覆盖波导元件的所有表面的均匀部分，其完全反射在波导元件中被引导的基波。

14. 发明授权

US4991931A Method of driving optical wavelength converter module 失效
标题翻译：光波长转换模块的驱动方法
公开(公告)号：US4991931A
公开(公告)日：1991-02-12
申请号：US470500
申请日：1990-01-26
申请人： Akinori Harada , Yoji Okazaki , Hiroshi Sunagawa
发明人： Akinori Harada , Yoji Okazaki , Hiroshi Sunagawa
IPC分类号： G02F1/37 , G02F1/377 , G02F1/383 , H01S3/09 , H01S5/042
CPC分类号： G02F1/377 , G02F1/383
摘要： An optical wavelength converter module includes an optical wavelength converter device having a cladding and a waveguide which is disposed in the cladding and has a higher refractive index than the cladding, at least one of the cladding and the waveguide being made of a nonlinear optical material, whereby the wavelength of a fundamental which is propagating in the waveguide is converted. The optical wavelength converter module also includes a semiconductor laser for emitting a laser beam which is introduced as the fundamental into the waveguide. The semiconductor laser is driven with a pulsed drive current. The duration of the drive current pulses is made short enough to enable the semiconductor laser to produce a higher peak output power than when it is continuously driven, and it is made longer then a duration which falls within the range of pulse durations wherein the input coupling efficiency decreases as the pulse duration decreases and at which the wavelength conversion efficiency is equal to that which is achieved when the semiconductor laser is continuously driven.
摘要翻译：光波长转换器模块包括具有包层和波导的光波长转换器装置，其布置在包层中并且具有比包层更高的折射率，包层和波导中的至少一个由非线性光学材料制成，从而转换在波导中传播的基波的波长。光波长转换器模块还包括用于发射作为基波导入波导的激光束的半导体激光器。半导体激光器以脉冲驱动电流驱动。使得驱动电流脉冲的持续时间足够短以使得半导体激光器能够产生比连续驱动时更高的峰值输出功率，并且使其长于在脉冲持续时间范围内的持续时间，其中输入耦合随着脉冲持续时间的减小，波长转换效率等于半导体激光器连续驱动时的效率降低，效率降低。

15. 发明授权

US4893888A Optical wavelength converter device 失效
公开(公告)号：US4893888A
公开(公告)日：1990-01-16
申请号：US221972
申请日：1988-07-20
申请人： Yoji Okazaki , Koji Kamiyama , Masaki Okazaki
发明人： Yoji Okazaki , Koji Kamiyama , Masaki Okazaki
IPC分类号： G02F1/37 , G02F1/35 , G02F1/355 , G02F1/361 , G02F1/377 , G02F1/383
CPC分类号： G02F1/377 , G02F1/361 , G02F1/383 , G02F2001/374
摘要： An optical wavelength converter device has a waveguide of a nonlinear optical material disposed in cladding and having a refractive index lower than the refractive index of the cladding for converting a fundamental guided through the waveguide into a second or third harmonic and radiating the second or third harmonic into the cladding. The nonlinear optical material comprises an organic nonlinear optical material having a maximum light absorption coefficient at a wavelength close to the wavelength of at least one of the fundamental and the second harmonic.

16. 发明申请

US20060237404A1 Laser annealer and laser thin-film forming apparatus 审中-公开
公开(公告)号：US20060237404A1
公开(公告)日：2006-10-26
申请号：US11390304
申请日：2006-03-28
申请人： Hiromi Ishikkawa , Akinori Harada , Kazuhiko Nagano , Yoji Okazaki , Takeshi Fujii , Hideo Yamanaka , Hiromitsu Yamakawa
发明人： Hiromi Ishikkawa , Akinori Harada , Kazuhiko Nagano , Yoji Okazaki , Takeshi Fujii , Hideo Yamanaka , Hiromitsu Yamakawa
IPC分类号： B23K26/00
CPC分类号： B23K26/0608 , B23K26/0604 , C23C14/28 , C23C16/483
摘要： A laser annealer has a laser light source with at least one GaN-type semiconductor laser and is configured so as to form emission points that emit laser beams having a wavelength of 350 to 450 nm, and a scanning device for scanning an annealing surface with the laser beams. The laser annealer may have a spatial light modulator for modulating the laser beams, and in which pixel portions whose light modulating states change in accordance with control signals are arranged on a substrate. The invention is applied to a laser thin-film forming apparatus. The apparatus has a laser source that has at least one semiconductor laser and is configured so as to form emission points, and an optical system for focusing laser beams into a single beam in the width direction of a substrate.

17. 发明授权

US5588014A Optical wavelength converting apparatus 失效
公开(公告)号：US5588014A
公开(公告)日：1996-12-24
申请号：US417673
申请日：1995-04-06
申请人： Yoji Okazaki , Chiaki Goto , Hiroaki Hyuga , Akinori Harada
发明人： Yoji Okazaki , Chiaki Goto , Hiroaki Hyuga , Akinori Harada
IPC分类号： G02F1/35 , G02F1/355 , G02F1/37 , H01S3/109 , H01S3/10
CPC分类号： G02F1/37 , H01S3/109 , G02F1/3553 , G02F2001/3546
摘要： In an optical wavelength converting apparatus, a fundamental wave impinges upon a crystal of a nonlinear optical material, the type II of phase matching between the fundamental wave and its second harmonic is effected, and the second harmonic of the fundamental wave is thereby radiated out of the optical wavelength converting apparatus. Two crystals constituted of the same material are employed as the crystal. The two crystals have equal lengths and are located in orientations such that corresponding optic axes may be shifted 90.degree. from each other. The optical wavelength converting apparatus yields the second harmonic having the maximum possible output power and yet can be kept small in size and low in cost.

18. 发明授权

US5424867A Fabrication of ferroelectric domain reversals 失效
标题翻译：铁电畴反转的制作
公开(公告)号：US5424867A
公开(公告)日：1995-06-13
申请号：US198268
申请日：1994-02-18
申请人： Yasukazi Nihei , Akinori Harada , Yoji Okazaki
发明人： Yasukazi Nihei , Akinori Harada , Yoji Okazaki
IPC分类号： G02B6/12 , G02F1/35 , G02F1/355 , G02F1/37
CPC分类号： G02F1/3558
摘要： A method for fabricating an optical wavelength converter element which has a high optical damage threshold value, and is capable of achieving a high wavelength conversion efficiency without involving propagation losses caused by the reflection and scattering of a fundamental wave and a wavelength-converted wave. Domain reversals periodically arranged are formed on a substrate made of a LiNbO.sub.3 crystal which acts as a ferroelectric substance possessing a nonlinear optical effect. Thereafter, an ITO thin film made of a transparent electrically conductive material is deposited on a surface of the substrate extending in the direction of the arrangement of the domain reversals, that is, "y" and "z" surfaces.
摘要翻译：一种具有高光损伤阈值的光波长转换元件的制造方法，能够实现高波长转换效率，而不会引起由基波和波长转换波的反射和散射引起的传播损耗。周期性布置的畴反转形成在由作为具有非线性光学效应的铁电物质的LiNbO 3晶体制成的衬底上。此后，由透明导电材料制成的ITO薄膜沉积在沿着域反转的布置方向延伸的基板的表面上，即“y”和“z”表面。

19. 发明授权

US5315433A Optical wavelength converting apparatus 失效
标题翻译：光波长转换装置
公开(公告)号：US5315433A
公开(公告)日：1994-05-24
申请号：US843719
申请日：1992-02-28
申请人： Yoji Okazaki , Chiaki Goto , Hiroaki Hyuga , Akinori Harada
发明人： Yoji Okazaki , Chiaki Goto , Hiroaki Hyuga , Akinori Harada
IPC分类号： G02F1/35 , G02F1/355 , G02F1/37 , H01S3/109
CPC分类号： G02F1/37 , H01S3/109 , G02F1/3553 , G02F2001/3546
摘要： In an optical wavelength converting apparatus, a fundamental wave impinges upon a crystal of a nonlinear optical material, the type II of phase matching between the fundamental wave and its second harmonic is effected, and the second harmonic of the fundamental wave is thereby radiated out of the optical wavelength converting apparatus. Two crystals constituted of the same material are employed as the crystal. The two crystals have equal lengths and are located in orientations such that corresponding optic axes may be shifted 90.degree. from each other. The optical wavelength converting apparatus yields the second harmonic having the maximum possible output power and yet can be kept small in size and low in cost.
摘要翻译：在光波长变换装置中，基波对非线性光学材料的晶体入射，实现了基波和二次谐波之间的相位匹配型II，从而将基波的二次谐波从光波长转换装置。使用由相同材料构成的两个晶体作为晶体。两个晶体具有相等的长度并且位于取向上，使得相应的光轴彼此相差90度。光波长转换装置产生具有最大可能输出功率的二次谐波，并且可以保持尺寸小，成本低。

20. 发明授权

US4923277A Optical wavelength converter device 失效
标题翻译：光波长转换器
公开(公告)号：US4923277A
公开(公告)日：1990-05-08
申请号：US265986
申请日：1988-11-02
申请人： Yoji Okazaki , Koji Kamiyama
发明人： Yoji Okazaki , Koji Kamiyama
IPC分类号： G02B6/02 , G02F1/37 , G02F1/383
CPC分类号： G02F1/383
摘要： An optical wavelength converter device of the optical fiber type includes a core made of a nonlinear optical material and cladding surrounding the core for converting a wave having a fundamental frequency, which wave is applied to an end of the core, to its second harmonic and radiating the second harmonic into the cladding in such a way as to eliminate interference between the waves traveling in a guided mode in which the fundamental is guided through the core and the waves traveling in a radiation mode in which the second harmonic is radiated into the cladding. The cladding has a diameter of at least 500 .mu.m.

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