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1.发明授权Wavelength conversion element, laser light source, two-dimensional image display and laser processing system 有权波长转换元件，激光光源，二维图像显示和激光加工系统公开(公告)号：US08018646B2
公开(公告)日：2011-09-13
申请号：US11997099
申请日：2006-07-26
IPC分类号： G02F1/35
CPC分类号： G02F1/3558 , C30B15/00 , C30B29/30 , G02F1/3551 , G02F1/37 , G02F2202/20 , G02F2203/21
摘要： A wavelength conversion element is provided with a substrate including a nonlinear optical single crystal having a periodically poled structure, wherein a visible light transmittance of the substrate is 85% or higher when ultraviolet light is irradiated to the substrate. Further, a laser light having an average output of 1 W or more is outputted by shortening a wavelength of inputted laser light having a wavelength of 640 nm to 2000 nm. By improving visible light transmission characteristics when the ultraviolet light is irradiated in this way, a breakdown of crystal can be prevented and a stabilization of output characteristics at high output can be realized. As a result, an absorption of green light induced by ultraviolet light can also be suppressed and a saturation of output and the breakdown of crystal can be avoided.
摘要翻译： 波长转换元件设置有包括具有周期性极化结构的非线性光学单晶的衬底，其中当将紫外光照射到衬底时，衬底的可见光透射率为85％以上。 此外，通过缩短波长为640nm至2000nm的输入激光的波长，输出平均输出为1W以上的激光。 通过以这种方式照射紫外线时的可见光透射特性的改善，可以防止晶体的破坏，并且能够实现高输出下的输出特性的稳定化。 结果，也可以抑制紫外线诱发的绿光的吸收，可以避免输出的饱和和晶体的击穿。
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公开(公告)号：US20090244405A1
公开(公告)日：2009-10-01
申请号：US12088572
申请日：2006-09-26
申请人： Kazuhisa Yamamoto , Tetsuro Mizushima , Ken'ichi Kasazumi , Akihiro Morikawa , Shin-ichi Kadowaki
发明人： Kazuhisa Yamamoto , Tetsuro Mizushima , Ken'ichi Kasazumi , Akihiro Morikawa , Shin-ichi Kadowaki
CPC分类号： G03B21/16
摘要： Disclosed herein is a laser projection device which can keep the colors of red, blue, and green laser beams constant even in high ambient temperature. The laser projection device includes a red laser light source which emits a red laser beam, a temperature sensor for detecting the temperature of the red laser light source, and a radiating unit for radiating heat from the red laser light source to the outside based on the temperature of the red laser light source detected by the temperature sensor.
摘要翻译： 这里公开了一种激光投射装置，即使在高环境温度下也能够保持红色，蓝色和绿色激光束的颜色恒定。 激光投影装置包括发射红色激光束的红色激光光源，用于检测红色激光光源的温度的温度传感器，以及用于将红色激光光源的热量散发到外部的辐射单元，其基于 由温度传感器检测的红色激光光源的温度。
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公开(公告)号：US07494286B2
公开(公告)日：2009-02-24
申请号：US10534438
申请日：2003-11-12
CPC分类号： G02B6/42 , G02B6/4239 , G02F1/3775 , H01S5/0092 , H01S5/02208 , H01S5/02252
摘要： Efficient coupling structures are important for the realization of reliable and economical integrated optical circuit applications. This paper presents a new approach for the simulation of an anisotropic plasma etching process in silicon based on a string point model as well as the realization and the results of etching processes in silicon, silicon dioxide, silicon oxinitride and silicon nitride which are fundamental for the fabrication of coupling structures. The connections to active and passive components were fabricated using plasma etching and deposition processes which are compatible with C-MOS or BIC-MOS technology. The realized waveguide-detector structures with vertical and horizontal silicon PIN-diodes exhibit efficiencies close to 90% for wavelength below 1.1 micrometers. The diodes can detect signals of modulation frequencies of more than 400 MHz due to horizontal light injection and capacitances less than 1 pF. Fiber-detector coupling structures with U-grooves for the fiber alignment containing such detectors show similar results. The necessary accuracy of the etched depth of the U-grooves for fiber-detector coupling is +/−2 micrometers in contrast to a fiber-waveguide coupling which requires a reproducible accuracy of the process better than 0.5 micrometers. A reduction of coupling losses due to the necessary close tolerances is accomplished by waveguide tapers. The simulation, realization and results for such structures are presented in the paper. Also laser diode—fiber connections require extremely close tolerances. The design of a micro-optical bench realized by plasma etching and a selfaligning soldering process is presented, which allows such tolerances.
摘要翻译： 高效的耦合结构对于实现可靠且经济的集成光电路应用很重要。 本文提出了一种基于串点模型模拟硅中各向异性等离子体蚀刻工艺的新方法，以及硅，二氧化硅，氮氧化硅和氮化硅中蚀刻过程的实现和结果，这些都是基于 耦合结构的制造。 使用与C-MOS或BIC-MOS技术兼容的等离子体蚀刻和沉积工艺制造与主动和无源部件的连接。 实现的具有垂直和水平硅PIN二极管的波导检测器结构对于低于1.1微米的波长表现出接近90％的效率。 由于水平光注入和小于1 pF的电容，二极管可以检测超过400 MHz的调制频率信号。 具有用于包含这种检测器的光纤对准的U形槽的光纤检测器耦合结构显示相似的结果。 与光纤 - 波导耦合相比，用于光纤 - 检测器耦合的U形槽的蚀刻深度所需的精度为+/- 2微米，这需要该工艺的可重复精度优于0.5微米。 由于必要的紧公差导致的耦合损耗的减小是通过波导锥度实现的。 本文提出了这种结构的仿真，实现和结果。 激光二极管 - 光纤连接也需要极其公差。 提出了通过等离子体蚀刻和自对准焊接工艺实现的微光学台架的设计，其允许这种公差。
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公开(公告)号：US20080232412A1
公开(公告)日：2008-09-25
申请号：US10584077
申请日：2004-12-21
CPC分类号： H01S5/18386 , H01S3/109 , H01S5/0421 , H01S5/0425 , H01S5/0655 , H01S5/14 , H01S5/18391 , H01S5/2086 , H01S5/4062 , H01S5/423 , H01S2301/166
摘要： A surface emitting laser (100a) includes an active layer (3) disposed on a semiconductor substrate (2a), and a pair of upper and lower electrodes (5,6) for injecting carriers into the active layer (3). The plane surface of the lower electrode (6) is shaped into a star so that injection of current into the active layer (3) from the lower electrode (6) is carried out with a high density at the center of the lower electrode (6) and with a low density at its periphery part. In the surface emitting laser (100a), the density distribution of the carriers injected into the active layer corresponds to the power distribution of light inside the active layer. Thereby, hole burning due to an increase in the current density in the region of the active layer corresponding to the peripheral part of the electrode is avoided, and the transverse mode stability during high output operation is significantly enhanced to improve high-output characteristic.
摘要翻译： 表面发射激光器（100a）包括设置在半导体衬底（2a）上的有源层（3）和用于将载流子注入有源层（3）的一对上下电极（5,6）。 下部电极（6）的平面被成形为星形，使得从下部电极（6）向下部电极（6）的中心以高密度注入电流进入有源层（3） ）并且在其周边部分具有低密度。 在表面发射激光器（100a）中，注入有源层的载流子的密度分布对应于有源层内的光的功率分布。 因此，避免了由于与电极的周边部分相对应的有源层的区域中的电流密度的增加而导致的空穴燃烧，并且显着增强了高输出操作期间的横向模式稳定性，从而提高了高输出特性。
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公开(公告)号：US07399084B2
公开(公告)日：2008-07-15
申请号：US10576067
申请日：2005-04-06
IPC分类号： G03B21/14
CPC分类号： H04N9/3129
摘要： A light diffuser containing light diffusing elements is arranged in the most appropriate position between a spatial light modulator and an illumination optical system. Thereby, particles as light diffusing elements diffuse rays of light emitted from a laser light source. Accordingly, indefinite numbers of speckle pattern are formed so that, for example, a speckle noise which occurs on an image projected to a screen is reduced. As a result, loss of light amount after light diffusion is suppressed to small amount, and thereby a laser image display apparatus capable of displaying a bright and high-quality image having no luminosity irregularity is provided.
摘要翻译： 包含光漫射元件的光漫射器被布置在空间光调制器和照明光学系统之间的最适当位置。 因此，作为光漫射元件的粒子漫射从激光光源射出的光线。 因此，形成不确定数量的斑纹图案，使得例如在投影到屏幕上的图像上发生的散斑噪声减小。 结果，光扩散后的光量的损失被抑制到少量，从而提供能够显示不具有亮度不规则性的明亮且高质量的图像的激光图像显示装置。
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公开(公告)号：US20070081220A1
公开(公告)日：2007-04-12
申请号：US10582340
申请日：2004-12-09
申请人： Toshifumi Yokoyama , Ken'ichi Kasazumi , Akihiro Morikawa , Kiminori Mizuuchi , Kazuhisa Yamamoto
发明人： Toshifumi Yokoyama , Ken'ichi Kasazumi , Akihiro Morikawa , Kiminori Mizuuchi , Kazuhisa Yamamoto
IPC分类号： G02B26/08
CPC分类号： G02B26/125 , G02B26/123 , H04N3/08 , H04N9/3129 , Y10S359/90
摘要： In a display unit which makes coherent light perform scanning on a screen to display an image, it is necessary to rotate a polygon mirror at ultrahigh speed for display of a high resolution image such as HDTV, and therefore, a high-performance polygon mirror must be employed, and further, noise and power consumption during rotation of the polygon mirror cause problems. Mirrors for multiple reflection (6a) and (6b) are inserted in a coherent light scanning optical system, whereby plural scanning lines can be obtained while one plane of the polygon mirror (5) scans one line of coherent light, leading to reduction in the rpm of the polygon mirror.
摘要翻译： 在使相干光在屏幕上进行扫描以显示图像的显示单元中，需要以超高速度旋转多面镜以显示诸如HDTV的高分辨率图像，因此，高性能多面镜必须 并且进一步地，在多面镜旋转期间的噪声和功率消耗导致问题。 多反射镜（6a）和（6b）的反射镜被插入相干光扫描光学系统中，从而可以获得多个扫描线，同时多面镜（5）的一个平面扫描一条相干光线，从而减少 在多面镜的转速。
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公开(公告)号：US20060034570A1
公开(公告)日：2006-02-16
申请号：US10534438
申请日：2003-11-12
IPC分类号： G02B6/36
CPC分类号： G02B6/42 , G02B6/4239 , G02F1/3775 , H01S5/0092 , H01S5/02208 , H01S5/02252
摘要： A laser module includes: a sub-mount; a semiconductor laser secured to a surface of the sub-mount; and an optical waveguide device joined to the surface of the sub-mount by an adhesive layer so that the optical waveguide device is coupled optically with the semiconductor laser. A first groove is formed at the surface of the sub-mount at a region corresponding to an incident end side of the optical waveguide device, the first groove being formed parallel to an outgoing end face of the semiconductor laser with a predetermined space therefrom. The adhesive layer is formed so that an end of the adhesive layer on the incident end side of the optical waveguide device is positioned within a range from a position abutting with a distal edge of the first groove distant from the semiconductor laser to an inside of the first groove and does not contact with the outgoing end face of the semiconductor laser. Since the adhesive layer can be positioned within a preferable range, coupling misalignment resulting from distortion due to a temperature change can be suppressed.
摘要翻译： 激光模块包括：子安装座; 半导体激光器，其固定到所述副安装座的表面; 以及通过粘合层与子座的表面接合的光波导器件，使得光波导器件与半导体激光器光耦合。 在与所述光波导装置的入射端侧对应的区域的所述副安装座的表面形成有第一槽，所述第一槽与所述半导体激光器的出射端面平行地形成有预定的间隔。 粘合剂层形成为使得光波导装置的入射端侧的粘合剂层的端部位于与远离半导体激光器的第一凹槽的远端边缘邻接的位置的范围内 并且不与半导体激光器的出射端面接触。 由于粘合剂层可以位于优选范围内，所以可以抑制由于温度变化引起的变形引起的耦合失准。
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公开(公告)号：US08189632B2
公开(公告)日：2012-05-29
申请号：US12443258
申请日：2007-09-28
申请人： Tetsuro Mizushima , Akihiro Morikawa , Kazuhisa Yamamoto , Kenichi Kasazumi , Hiroyuki Furuya , Shinichi Kadowaki
发明人： Tetsuro Mizushima , Akihiro Morikawa , Kazuhisa Yamamoto , Kenichi Kasazumi , Hiroyuki Furuya , Shinichi Kadowaki
IPC分类号： H01S3/00
CPC分类号： H01S5/4025 , G09G3/3406 , G09G3/3413 , G09G2320/043 , G09G2320/0693 , G09G2330/021 , G09G2330/08 , G09G2360/145 , H01S5/0683 , H01S5/4012 , H01S5/4087 , H04N9/3161 , H04N9/3164
摘要： A laser emission device comprises a plurality of laser elements, a plurality of laser driving power supplies, optical elements which uniformize the laser light amount distributions of laser lights, plural light-receiving elements, a measurement unit which measures at least the relations between the operation current values of the laser elements and the output power values of the laser lights with respect to the operation current values, and the control unit operates the laser driving power supplies according to the operation current values and the output power values so as to make the light output powers of the laser elements different from each other.
摘要翻译： 激光发射装置包括多个激光元件，多个激光驱动电源，使激光的激光量分布均匀化的光学元件，多个光接收元件，至少测量操作之间的关系的测量单元 相对于操作电流值，激光元件的电流值和激光的输出功率值，并且控制单元根据操作电流值和输出功率值来操作激光驱动电源，以使光 激光元件的输出功率彼此不同。
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公开(公告)号：US08016427B2
公开(公告)日：2011-09-13
申请号：US12645204
申请日：2009-12-22
IPC分类号： G03B21/00
CPC分类号： G02B27/1053 , G02B27/1073 , G02B27/1093 , G02B27/149 , G03B21/208 , G03B33/12 , H04N9/3114 , H04N9/3129 , H04N9/315
摘要： There is provided a light source device which can miniaturize a two-dimensional image display device as small as possible. The light source device is provided with three coherent light sources (11a), (11b), and (11c) corresponding to red, blue, and green; prisms (12a) and (12c) for reflecting lights emitted from the coherent light sources (11a) and (11c); and a diffraction part (20) comprising a single volume hologram on which plural gratings are multiply-formed, which gratings diffract the light emitted from the coherent light source (11b), and the lights that are emitted from the coherent light sources (11a) and (11c) and reflected by the prisms (12a) and (12b) so that these lights propagate in the same optical path.
摘要翻译： 提供了尽可能小的使二维图像显示装置小型化的光源装置。 光源装置具有对应于红色，蓝色和绿色的三个相干光源（11a），（11b）和（11c） 用于反射从相干光源（11a）和（11c）发出的光的棱镜（12a）和（12c）; 以及衍射部分（20），其包括单个体积全息图，多个光栅被多重形成，所述光栅衍射从相干光源（11b）发射的光以及从相干光源（11a）发射的光， 和（11c）并由棱镜（12a）和（12b）反射，使得这些光在相同的光路中传播。
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公开(公告)号：US07999998B2
公开(公告)日：2011-08-16
申请号：US12438111
申请日：2007-10-24
IPC分类号： G02F1/37
CPC分类号： G02F1/3775 , G02F2001/3546
摘要： A short wavelength light source includes a wavelength conversion element having an incident surface, on which a fundamental wave is incident, and an output surface, from which a harmonic wave is outputted. The wavelength conversion element converts the fundamental wave into the harmonic wave. In addition, the wavelength conversion element includes a holder holding the wavelength conversion element, wherein the wavelength conversion element has a specific region on a light output side, which is arranged so as to suppress variations in phase matching condition between the fundamental wave and the harmonic wave resulting from heat generated by absorbing the harmonic wave during a wavelength conversion.
摘要翻译： 短波长光源包括具有基波入射的入射面的波长转换元件和从其输出谐波的输出面。 波长转换元件将基波转换成谐波。 此外，波长转换元件包括保持波长转换元件的保持器，其中波长转换元件在光输出侧具有特定区域，其被布置为抑制基波和谐波之间的相位匹配条件的变化 在波长转换期间通过吸收谐波产生的热产生的波。
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