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公开(公告)号：JP2009054651A
公开(公告)日：2009-03-12
申请号：JP2007217503
申请日：2007-08-23
Inventor： KIMURA KAORU , OKA MICHIO
CPC classification number: H01S3/108 , G02B26/105 , H01S3/0621 , H01S3/0815 , H01S3/09415 , H01S3/1625 , H01S3/1636 , H01S3/1653 , H01S3/1671
Abstract: PROBLEM TO BE SOLVED: To suppress parasitic oscillation due to polarization other than desired polarization in outputting linear converted waves, and to prevent increase of the number of components to simplify the configuration of a device. SOLUTION: This laser light source device includes an excitation light source 1, and a pair of resonator mirrors 5 and 11, and is provided with a laser medium 6 and a wavelength conversion element 10 in a resonator 20 composed of the resonator mirrors 5 and 11. The laser medium 6 is excited by light having a lateral multi-mode pattern, and the wavelength conversion element 10 is irradiated with linear fundamental waves provided by oscillation of the laser medium 6 to output linear converted waves. A reflecting part 8 folding back an optical path is formed in a resonance optical path between the laser medium 6 and the wavelength conversion element 10, an end surface of the laser medium 6 or the wavelength conversion element 10 is formed into an inclined surface other than a Brewster angle, and a polarization film 7 is formed on the inclined surface. COPYRIGHT: (C)2009,JPO&INPIT
Abstract translation: 要解决的问题：为了抑制在输出线性转换波时由于期望极化以外的极化而引起的寄生振荡，并且为了简化组件的配置，防止组件数量的增加。 解决方案：该激光光源装置包括激发光源1和一对谐振镜5和11，并且在谐振器20中设置有激光介质6和波长转换元件10，谐振器20由谐振器镜 激光介质6被具有横向多模式图案的光激发，并且通过激光介质6的振荡提供的线性基波照射波长转换元件10以输出线性转换波。 在激光介质6和波长转换元件10之间的共振光路中形成折回光路的反射部8，激光介质6或波长转换元件10的端面形成为除了 布鲁斯特角，偏光膜7形成在倾斜面上。 版权所有（C）2009，JPO＆INPIT
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122.发明专利Wavelength conversion element, laser light source device using the same, and image generating apparatus 有权波长转换元件，使用其的激光光源装置和图像发生装置
公开(公告)号：JP2008140919A
公开(公告)日：2008-06-19
申请号：JP2006324580
申请日：2006-11-30
Inventor： FUKUI TATSUO , OKA MICHIO
Abstract: PROBLEM TO BE SOLVED: To provide a laser light source device which reduces the number of components and stabilizes a power output.
SOLUTION: The laser light source device includes an exciting light source 1, and a resonator 30 containing at least a laser medium 6 and a wavelength conversion element 10. The wavelength conversion element 10 has a wavelength converting portion 11 converting a wavelength through pseudo phase matching on the part of the wavelength conversion element 10 on an incident/emission end face and a reflective portion 13 at least reflecting a converted wave on an end face opposite to the incident/emission end face.
COPYRIGHT: (C)2008,JPO&INPITAbstract translation: 要解决的问题：提供减少部件数量并稳定功率输出的激光光源装置。 解决方案：激光光源装置包括激光光源1和至少包含激光介质6和波长转换元件10的谐振器30.波长转换元件10具有波长转换部分11，其转换波长通过 入射/发射端面上的波长转换元件10的部分上的伪相位匹配以及反射部13，至少在与入射/发射端面相反的端面反射转换波。 版权所有（C）2008，JPO＆INPIT
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公开(公告)号：JP2008112846A
公开(公告)日：2008-05-15
申请号：JP2006294587
申请日：2006-10-30
Inventor： MAEDA YUKI , OKA MICHIO , KIMURA KAORU
CPC classification number: H01S3/109 , H01S3/08 , H01S3/0816 , H01S3/082
Abstract: PROBLEM TO BE SOLVED: To provide a laser light source device which suppresses interference by harmonic light caused by wavelength conversion to stabilize output.
SOLUTION: A laser medium 6 and a wavelength conversion element 9 are incorporated in a resonator 30 composed of an excitation light source 1 and resonator mirrors 5 and 10. One of two harmonics generated at the wavelength conversion element 9 is extracted out of the resonator 30, shifted spacially by a return reflection unit 11, and then returned to the wavelength conversion element 9. The resonator suppresses spacial interference to stabilize output and beam profile.
COPYRIGHT: (C)2008,JPO&INPITAbstract translation: 要解决的问题：提供一种抑制由波长转换引起的谐波光的干扰以稳定输出的激光光源装置。 解决方案：激光介质6和波长转换元件9并入由激励光源1和谐振镜5和10组成的谐振器30中。在波长转换元件9处产生的两个谐波中的一个从 谐振器30由返回反射单元11空间移动，然后返回到波长转换元件9.谐振器抑制空间干扰以稳定输出和波束轮廓。 版权所有（C）2008，JPO＆INPIT
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公开(公告)号：JP2006100772A
公开(公告)日：2006-04-13
申请号：JP2005088819
申请日：2005-03-25
Inventor： OKA MICHIO
CPC classification number: H01S3/109 , H01S3/005 , H01S3/0615 , H01S3/0816 , H01S3/094084 , H01S3/09415 , H01S3/1611 , H01S3/1643 , H01S5/4012 , H01S5/4031 , H04N9/3129
Abstract: PROBLEM TO BE SOLVED: To provide a high-power and high-efficiency one-dimensional illumination apparatus which is effective for speckle effect reduction, and provide an imaging apparatus. SOLUTION: A one-dimensional transverse multimode laser is used for a one-dimensional illumination apparatus 1. A pumping light source 2, laser medium 4 in a resonator 3, and a wavelength transducer 5 (nonlinear optical crystal or a nonlinear optical device) are disposed. The nonlinear optical crystal or the nonlinear optical device is irradiated with a line beam obtained by exciting the laser medium 4 in an elliptic transverse mode pattern. Then, a one-dimensional light modulation device 7 is irradiated with the wavelength-converted line beam, and scanning with the beam modulated by the device is conducted to produce a two-dimensional image. For example, in a green illumination optical system, in the case where the nonlinear optical device for obtaining visible rays through second harmonic generation from near-infrared light oscillated by a solid-state laser medium has a periodical poling inversion structure, stoichiometric composition periodical poling inversion lithium tantalate having been subjected to vapor transport equilibration is used, whereby reliability is enhanced and a reduction in cost can be achieved through mass production. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract translation: 要解决的问题：提供一种有效减少斑点效应的大功率高效率一维照明装置，并提供一种成像装置。 解决方案：一维横模多模激光器用于一维照明装置1.泵浦光源2，谐振器3中的激光介质4和波长传感器5（非线性光学晶体或非线性光学 设备）。 非线性光学晶体或非线性光学器件被以通过以椭圆横模式图案激发激光介质4而获得的线束照射。 然后，用波长转换线束照射一维光调制装置7，并进行利用该装置调制的光束进行扫描以产生二维图像。 例如，在绿色照明光学系统中，在通过由固态激光介质振荡的近红外光获得二次谐波产生的可见光的非线性光学装置具有周期性极化反转结构的情况下，化学计量组成周期性极化 使用已进行蒸气传输平衡的倒置的钽酸锂，从而提高可靠性并通过批量生产实现成本的降低。 版权所有（C）2006，JPO＆NCIPI
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125.发明专利Laser equipment, laser-beam multiplexing method, image display, coupling element, and manufacturing method of the coupling element 审中-公开激光设备，激光束多路复用方法，图像显示，耦合元件和耦合元件的制造方法
公开(公告)号：JP2006093586A
公开(公告)日：2006-04-06
申请号：JP2004279779
申请日：2004-09-27
Inventor： FUKUI TATSUO , FUKUMOTO ATSUSHI , KIMURA KAORU , OKA MICHIO
IPC: H01S5/022
Abstract: PROBLEM TO BE SOLVED: To provide laser equipment which is low in cost and excellent in coupling efficiency, and further, can obtain a laser beam having high luminance, a laser-beam multiplexing method, an image display, a coupling element, and a manufacturing method of the coupling element.
SOLUTION: In the laser equipment, two or more laser beams B1-B5 emitted from light sources are condensed by at least one condensing means, and optical axes of one or more laser beams B2-B4 among the laser beams are displaced spatially near their beam waists by at least one coupling elements 2, and further, the two or more laser beams B1-B5 are so emitted that their optical axes are approximated to one another.
COPYRIGHT: (C)2006,JPO&NCIPIAbstract translation: 要解决的问题：提供成本低，耦合效率优异的激光设备，并且还可以获得具有高亮度的激光束，激光束多路复用法，图像显示器，耦合元件， 以及耦合元件的制造方法。 解决方案：在激光设备中，从光源发射的两束或更多束激光束B1-B5由至少一个聚光装置冷凝，激光束中的一个或多个激光束B2-B4的光轴在空间上位移 通过至少一个耦合元件2靠近它们的光束腰部，此外，两个或更多个激光束B1-B5被发射，使得它们的光轴彼此近似。 版权所有（C）2006，JPO＆NCIPI
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Patent Agency Ranking
公开(公告)号：JP2005121903A
公开(公告)日：2005-05-12
申请号：JP2003356649
申请日：2003-10-16
Inventor： FUKUMOTO ATSUSHI , WATANABE MAKOTO , OKA MICHIO
Abstract: PROBLEM TO BE SOLVED: To overcome the problem that because an optical fiber, in particular, an optical fiber having a double clad structure composed of a large number of low refractive index regions disposed as extended in the longitudinal direction of the fiber, has such a structure that the peripheral form of the first clad has regularity such as a circle, a part of light introduced into the fiber generates a skewed beam, and the absorption efficiency of excitation light in the core can not be improved over a certain degree. SOLUTION: In a large number of the low refractive index regions such as holes in an optical fiber, at least part of the regions are formed to have a different cross-sectional figure or cross sectional area from each other as required. For example, an optical fiber having a double clad structure is constituted in such a manner that: at least part of a large number of low refractive index regions located in the innermost circumference part of the secondary clad are formed to have a different cross-sectional figure or cross sectional area from each other; or the distance from the fiber center to at least part of a large number of low refractive index regions located in the innermost circumference part of the secondary clad differs from each other. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation: 解决的问题为了克服以下问题：光纤，特别是具有由纤维长度方向延伸设置的大量低折射率区域构成的双层结构的光纤， 具有这样的结构：第一包层的周边形状具有诸如圆的规则性，引入光纤的一部分光产生歪斜光束，并且在一定程度上不能提高芯中的激发光的吸收效率 。 解决方案：在大量低折射率区域（如光纤中的孔）中，根据需要，至少部分区域形成为具有不同的横截面图或横截面积。 例如，具有双层结构的光纤以如下方式构成：位于次级包层的最内周部的多个低折射率区域的至少一部分形成为具有不同的截面 图形或横截面积; 或者从纤维中心到位于次级包层的最内周部的大量低折射率区域的至少一部分的距离彼此不同。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2005109185A
公开(公告)日：2005-04-21
申请号：JP2003341299
申请日：2003-09-30
Inventor： FUKUMOTO ATSUSHI , WATANABE MAKOTO , OKA MICHIO
Abstract: PROBLEM TO BE SOLVED: To solve the follow problems: a laser beam to be amplified propagating a core is decreased due to displacement of the laser beam to be amplified and the core at a fiber incident end in a fiber laser, and as a result, a sufficient amplification output can not be obtained at a fiber exit end, and for a double clad fiber, as the beam leaking from the core propagates a first clad and is emitted from a fiber exit end, it is difficult to identify the component propagating the core. SOLUTION: A position adjustment means arranged at either of a polarized-surface-preservation laser beam amplification fiber 1 having the double clad structure and receiving an excitation laser beam, or at an optical system which introduces to the laser beam amplification fiber 1 the laser beam to be amplified from the laser beam source 110 to be amplified to be optically amplified by the laser beam amplification fiber 1, adjusts a positional relationship between the incident end of the laser beam to be amplified at the core of the laser beam amplification fiber and the optical system at the laser beam source 110 side to be amplified. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation: 要解决的问题：为了解决以下问题：由于要放大的激光束的位移和在光纤激光器中的光纤入射端处的芯的位移而使芯放大的激光束减少，并且如 结果，在光纤出口端不能获得足够的放大输出，对于双包层光纤，当从芯发射的光束传播第一包层并从光纤出口端发射时，难以识别 组件传播核心。 解决方案：一种布置在具有双包层结构并接收激发激光束的偏振表面保存激光束放大光纤1中的位置调节装置，或者在引入激光束放大光纤1的光学系统 要从激光束源110放大的放大的激光束由激光束放大光纤1进行光放大，调整在激光束放大的核心处要被放大的激光束的入射端之间的位置关系 光纤和光学系统在激光束源110侧进行放大。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2001284719A
公开(公告)日：2001-10-12
申请号：JP2000100039
申请日：2000-03-31
Applicant: SONY CORP
Inventor： SUGANUMA HIROSHI , OKA MICHIO
Abstract: PROBLEM TO BE SOLVED: To carry out wavelength conversion for a semiconductor laser beam effectively with a simple low-cost configuration. SOLUTION: The external resonance type laser includes a laser oscillator 1 for casting a laser beam with a prescribed wavelength and an external resonator for wavelength conversion of a laser beam cast from the laser oscillator 1. A photopolymer volume hologram 3 and a non-linear optical crystal 5 are provided in the resonator. The laser beam cast from the oscillator 1 is diffracted by the photopolymer volume hologram and cast into the non-linear optical crystal 5. At the same time, the laser beam converted in wavelength is transmitted selectively through the photopolymer volume hologram and cast outside.
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公开(公告)号：JP2000018916A
公开(公告)日：2000-01-21
申请号：JP18777498
申请日：1998-07-02
Applicant: SONY CORP
Inventor： OKA MICHIO
Abstract: PROBLEM TO BE SOLVED: To provide a measuring apparatus and a measuring method which can measure further microstructure of an object to be measured and structure in the depth direction. SOLUTION: A UV laser beam is generated by the wavelength conversion of a laser beam from a solid-state laser beam source. Through heterodyne detection or homodyne detection using the UV laser beam, structure of an object 2 to be measured is measured. Thereby microstructure can be measured. Alternatively, a laser beam is divided into a plurality of laser lights, and frequency shift is so performed that the laser beams have different frequencies. The respective laser beams are made to form images at different positions of focal point, and heterodyne detection is performed. Obtained heterodyne signals are subjected to frequency band isolation, so that the structures of the object to be measured corresponding to the respective imaging points are measured. Thereby the structure also in the depth direction of the object to be measured can be measured.
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公开(公告)号：JPH11212129A
公开(公告)日：1999-08-06
申请号：JP1263798
申请日：1998-01-26
Applicant: SONY CORP
Inventor： WADA HIROYUKI , OKA MICHIO
Abstract: PROBLEM TO BE SOLVED: To prevent an output from being reduced concerning an optical system for generating an external resonator type second higher harmonic or sum frequency through continuous oscillation by inclining the normal of the incident plane or reflection plane of a non-linear optical crystal in respect to an optical axis. SOLUTION: When converting a basic wave to be amplified to the second higher harmonic through a non-linear optical crystal (BBO) 5, reflected light from the incident plane or emission plane of the crystal (BBO) 5 is resonated inside an external resonator at the time of wave length conversion. When green light is used as the basic wave in this case, for example, the output of green light pulled into the external resonator is lowered depending on the crystal in comparison with the case that the reflected light does not resonate. Then, the normal direction of the incident lane or emission plane of the optical crystal 5 is inclined from an optical axis resonating with the external resonator. Thus, the reflected light from the incident plane or emission plane of the optical crystal 5 is prevented from being resonated inside the external resonator so that the reduction of output can be prevented.
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