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    • 1. 发明授权
    • Multi-beam semiconductor laser apparatus
    • 多光束半导体激光装置
    • US08503498B2
    • 2013-08-06
    • US13429147
    • 2012-03-23
    • Yoshinori TanakaEiji MiyaiDai Ohnishi
    • Yoshinori TanakaEiji MiyaiDai Ohnishi
    • H01S5/00
    • H01S5/4031H01S5/0425H01S5/209H01S5/2231H01S2301/17H01S2301/176
    • A multi-beam semiconductor laser apparatus includes three or more stripe semiconductor laser emission units which are arranged on a substrate, isolation grooves which separate the semiconductor laser emission units from each other, and pad electrodes which are disposed on outer sides of the outermost semiconductor laser emission units. The isolation grooves are formed between the pad electrodes and the semiconductor laser emission units adjacent to the pad electrodes and between adjacent semiconductor laser emission units. A distance between two isolation grooves formed on outer sides of the outermost semiconductor laser light emission units is smaller than a distance between two isolation grooves formed on both sides of inner ones of the semiconductor laser light emission units.
    • 多光束半导体激光装置包括:三个以上的条状半导体激光发射单元,其设置在基板上,将半导体激光发射单元彼此分隔开的隔离沟槽和设置在最外侧半导体激光器的外侧的焊盘电极 排放单位。 隔离槽形成在焊盘电极与邻近焊盘电极的相邻半导体激光发射单元之间的半导体激光发射单元之间。 形成在最外侧半导体激光发射单元的外侧的两个隔离槽之间的距离小于形成在半导体激光发射单元的内侧两侧的两个隔离槽之间的距离。
    • 2. 发明授权
    • Two-dimensional photonic crystal laser
    • 二维光子晶体激光器
    • US08300672B2
    • 2012-10-30
    • US13061337
    • 2009-08-18
    • Susumu NodaSeita IwahashiYoshitaka KurosakaKyosuke SakaiEiji MiyaiDai OhnishiWataru Kunishi
    • Susumu NodaSeita IwahashiYoshitaka KurosakaKyosuke SakaiEiji MiyaiDai OhnishiWataru Kunishi
    • H01S5/00
    • H01S5/18H01S5/105H01S5/187
    • A two-dimensional photonic crystal laser light is provided. The two-dimensional photonic crystal laser includes a two-dimensional photonic crystal made of a plate-shaped member provided with a periodic arrangement of identically-shaped modified refractive index areas having a refractive index different from that of the plate-shaped member; and an active layer provided on one side of the two-dimensional photonic crystal. The modified refractive index areas are arranged at lattice points of a lattice with a same period at least in two directions; each modified refractive index area is shaped so that a feedback strength is different with respect to directions of two primitive lattice vectors of the lattice; the two-dimensional photonic crystal has a periodic structure of a supercell, which contains a plurality of lattice points; and the sum of the feedback strengths by all modified refractive index areas in the supercell is identical in each direction of the two primitive lattice vectors.
    • 提供二维光子晶体激光。 二维光子晶体激光器包括由板状构件制成的二维光子晶体,该二维光子晶体具有折射率不同于板状构件的相同形状的改性折射率区域的周期性布置; 以及设置在二维光子晶体的一侧上的有源层。 修饰的折射率区域至少在两个方向上布置在具有相同周期的格子的格子点处; 每个修改的折射率区域被成形为使得反馈强度相对于晶格的两个原始晶格矢量的方向是不同的; 二维光子晶体具有包含多个格点的超单元的周期性结构; 并且超级单元中的所有修改的折射率区域的反馈强度的总和在两个原始格子向量的每个方向上是相同的。
    • 3. 发明申请
    • TWO-DIMENSIONAL PHOTONIC CRYSTAL LASER
    • 二维光子晶体激光
    • US20110188526A1
    • 2011-08-04
    • US13061337
    • 2009-08-18
    • Susumu NodaSeita IwahashiYoshitaka KurosakaKyosuke SakaiEiji MiyaiDai OhnishiWataru Kunishi
    • Susumu NodaSeita IwahashiYoshitaka KurosakaKyosuke SakaiEiji MiyaiDai OhnishiWataru Kunishi
    • H01S3/16
    • H01S5/18H01S5/105H01S5/187
    • A two-dimensional photonic crystal laser light is provided. The two-dimensional photonic crystal laser includes a two-dimensional photonic crystal made of a plate-shaped member provided with a periodic arrangement of identically-shaped modified refractive index areas having a refractive index different from that of the plate-shaped member; and an active layer provided on one side of the two-dimensional photonic crystal. The modified refractive index areas are arranged at lattice points of a lattice with a same period at least in two directions; each modified refractive index area is shaped so that a feedback strength is different with respect to directions of two primitive lattice vectors of the lattice; the two-dimensional photonic crystal has a periodic structure of a supercell, which contains a plurality of lattice points; and the sum of the feedback strengths by all modified refractive index areas in the supercell is identical in each direction of the two primitive lattice vectors.
    • 提供二维光子晶体激光。 二维光子晶体激光器包括由板状构件制成的二维光子晶体,该二维光子晶体具有折射率不同于板状构件的相同形状的改性折射率区域的周期性布置; 以及设置在二维光子晶体的一侧上的有源层。 修饰的折射率区域至少在两个方向上布置在具有相同周期的格子的格子点处; 每个修改的折射率区域被成形为使得反馈强度相对于晶格的两个原始晶格矢量的方向是不同的; 二维光子晶体具有包含多个格点的超单元的周期性结构; 并且超级单元中的所有修改的折射率区域的反馈强度的总和在两个原始格子向量的每个方向上是相同的。
    • 4. 发明申请
    • Two-Dimensional Photonic Crystal Surface Emitting Laser Light Source
    • 二维光子晶体表面发射激光光源
    • US20090175304A1
    • 2009-07-09
    • US12225530
    • 2007-03-30
    • Susumu NodaYoshitaka KurosakaEiji MiyaiDai OhnishiWataru Kunishi
    • Susumu NodaYoshitaka KurosakaEiji MiyaiDai OhnishiWataru Kunishi
    • H01S5/00
    • H01S5/183H01S5/105
    • A two-dimensional photonic crystal surface emitting laser light source according to the present invention includes a two-dimensional photonic crystal made of a plate-shaped body material provided with a periodic arrangement of identically-shaped holes 242A and an active layer provided on one side of the two-dimensional photonic crystal. The hole 242A is not located on a first half-line 251 extending from the gravity center G1 of the hole in a direction within the plane of the two-dimensional photonic crystal, while the hole 242A is located at least on a portion of a second half-line 252 extending from the gravity center G1 in the direction opposite to the first half-line 251. Injecting electric charges into the active layer generates light, which creates an electric field that encircles the gravity center G1 within the two-dimensional photonic crystal. For a given point on the second half-line 252 at which the hole 242A is located, there is no hole at a point that is symmetrical to the aforementioned point with respect to the gravity center G1, so that there is a difference in the refractive index between the two points. Thus, the electric field vectors at the two points are prevented from canceling each other due to destructive interference, so that the resultant laser light is stronger than conventional examples.
    • 根据本发明的二维光子晶体表面发射激光光源包括由板状主体材料制成的二维光子晶体,该二维光子晶体设置有相同形状的孔242A和设置在一侧的活性层的周期性排列 的二维光子晶体。 孔242A不位于从二维光子晶体的平面内的孔的重心G1延伸的第一半线251上,而孔242A至少位于二次光子晶体的一部分上 从重心G1向与第一半线251相反的方向延伸的半线252.向有源层注入电荷产生光,其产生围绕二维光子晶体内的重心G1的电场 。 对于孔242A所在的第二半线252上的给定点,在相对于重心G1与上述点对称的点处没有孔,使得折射率 两点之间的指标。 因此,由于相消干涉,防止两点处的电场矢量彼此抵消,使得所得到的激光比传统例子更强。
    • 5. 发明申请
    • Two-Dimensional Photonic Crystal Surface Emitting Laser
    • 二维光子晶体表面发射激光器
    • US20090135871A1
    • 2009-05-28
    • US12225169
    • 2007-03-20
    • Susumu NodaEiji MiyaiKyosuke SakaiDai OhnishiWataru Kunishi
    • Susumu NodaEiji MiyaiKyosuke SakaiDai OhnishiWataru Kunishi
    • H01S5/18
    • H01S5/18355G11B7/127H01S5/026H01S5/105
    • An objective of the present invention is to provide a laser capable of producing a radially polarized laser beam with an annular cross section. A laser oscillator 60 including an active layer 53 and two-dimensional photonic crystal 55 with circular holes 552 arranged in a square lattice pattern is provided between two electrodes 571 and 572. A first polarization control layer 581, which functions as a half-wave plate, and a second polarization control layer 582, which functions as a half-wave plate with a fast axis 592 extending at an angle of 45° to that of the first polarization control layer 581, are located on the laser oscillator 60. When a voltage is applied between the electrodes, a circumferentially polarized annular laser beam is emitted from the laser oscillator 60. When passing through the first polarization control layer 581 and the second polarization control layer 582, the laser beam is converted to a radially polarized beam. The resultant laser beam can be converged by a focusing lens to achieve a diameter smaller than the diffraction limit. Such a narrow beam is suitable for an optical pickup or many other devices.
    • 本发明的目的是提供一种能够制造具有环形横截面的径向偏振激光束的激光器。 在两个电极571和572之间设置包括活性层53和具有以正方形格子图案排列的圆形孔552的二维光子晶体55的激光振荡器60.第一偏振控制层581用作半波片 ,并且作为半波片的第二偏光控制层582位于激光振荡器60上,该半波片具有与第一偏振控制层581成45°角延伸的快轴592。 施加在电极之间,从激光振荡器60发射周向极化的环形激光束。当通过第一偏振控制层581和第二偏振控制层582时,将激光束转换成径向偏振光束。 所得到的激光束可以被聚焦透镜会聚,以获得小于衍射极限的直径。 这种窄光束适用于光学拾取器或许多其他装置。
    • 6. 发明申请
    • Surface-emitting laser light source using two-dimensional photonic crystal
    • 表面发射激光光源采用二维光子晶体
    • US20090135869A1
    • 2009-05-28
    • US11991403
    • 2006-09-05
    • Susumu NodaEiji MiyaiDai Ohnishi
    • Susumu NodaEiji MiyaiDai Ohnishi
    • H01S3/16H01L21/02
    • H01S5/105H01S5/0425H01S5/18308H01S5/18358H01S2301/18
    • The present invention intends to provide a surface-emitting laser light source using a two-dimensional photonic crystal in which the efficiency of extracting light in a direction perpendicular to the surface is high. In a laser light source provided with a two-dimensional photonic crystal layer created from a plate-shaped matrix body in which a large number of holes are periodically arranged and an active layer arranged on one side of the two-dimensional photonic crystal layer, the holes are created to be columnar with a predetermined cross-sectional shape such as a circular shape, and the main axis of each of the columnar holes is tilted to a surface of the matrix body. When provided with this two-dimensional photonic crystal layer, the surface-emitting laser source using a two-dimensional photonic crystal has a Q⊥ value (i.e. a Q value in a direction perpendicular to the surface) of several thousands, which is suitable for an oscillation of laser light, and the efficiency of extracting light is high in the direction perpendicular to the surface.
    • 本发明旨在提供一种使用二维光子晶体的表面发射激光光源,其中在与表面垂直的方向上提取光的效率高。 在设置有由周期性排列大量孔的板状矩阵体形成的二维光子晶体层和配置在二维光子晶体层一侧的有源层的激光光源中, 产生具有预定横截面形状的柱状的孔,例如圆形,并且每个柱孔的主轴倾斜到矩阵体的表面。 当提供这种二维光子晶体层时,使用二维光子晶体的表面发射激光源具有几千个Q⊥值(即,垂直于表面的方向的Q值),其适用于 激光的振荡,并且在垂直于表面的方向上提取光的效率高。
    • 7. 发明申请
    • Metallic structure and photodetector
    • 金属结构和光电探测器
    • US20090091762A1
    • 2009-04-09
    • US12230622
    • 2008-09-02
    • Kosei UenoHiroaki MisawaDai OhnishiTakui SakaguchiYoichi Mugino
    • Kosei UenoHiroaki MisawaDai OhnishiTakui SakaguchiYoichi Mugino
    • G01N21/55H01J40/00B32B5/16
    • G01J1/02B22F1/0018B22F1/0096B22F2001/0037B82Y30/00C22C5/02Y10T428/2982Y10T428/2991Y10T428/2993Y10T428/2995Y10T428/2996Y10T428/2998
    • In a metallic structure including a metallic nano-chain with plasmon resonance absorption, a metallic nanoparticle forming the metallic nano-chain is formed in a circular, triangle, or rhomboid shape. The wavelength selectivity can be increased also by forming a closed region by mutually linking all of metallic nanoparticles that are mutually linked with bottlenecks. In a photodetector, a photodetection unit including a current detection probe, a nano-chain unit, and a current detection probe is arranged on a substrate. The nano-chain unit is a metallic structure with plasmon resonance absorption, where metallic nanoparticles are mutually linked with bottlenecks. Each current detection probe has a corner whose tip is formed with a predetermined angle, and this corner is arranged to face the tip of the nano-chain unit, i.e., a corner of the metallic nanoparticle. Photodetection with high wavelength selectivity is performed based on a change in the initial voltage of the current-voltage characteristic.
    • 在包括具有等离子体共振吸收的金属纳米链的金属结构中,形成金属纳米链的金属纳米颗粒形成为圆形,三角形或菱形。 波长选择性也可以通过相互连接与瓶颈相互连接的所有金属纳米颗粒形成闭合区域来增加。 在光电检测器中,在基板上设置包括电流检测探针,纳米链单元和电流检测探针的光检测单元。 纳米链单元是具有等离子体共振吸收的金属结构,其中金属纳米颗粒与瓶颈相互联系。 每个电流检测探针具有尖端以预定角度形成的角部,并且该角部布置成面对纳米链单元的尖端,即金属纳米颗粒的角部。 基于电流 - 电压特性的初始电压的变化来执行具有高波长选择性的光检测。
    • 9. 发明申请
    • SURFACE PLASMON RESONANCE SENSOR AND BIOCHIP
    • 表面等离子体共振传感器和生物技术
    • US20090066962A1
    • 2009-03-12
    • US12206022
    • 2008-09-08
    • Daisuke NiwaDai Ohnishi
    • Daisuke NiwaDai Ohnishi
    • G01N21/55
    • G01N21/553G01N21/554G01N21/7703
    • The present invention relates to a surface plasmon resonance sensor which has a first dielectric layer, a metal layer disposed on the first dielectric layer, and a second dielectric layer covering the metal layer. The surface plasmon resonance sensor includes: a sensor main body provided with an opening for exposing a part of a surface of the metal layer on a side facing the second dielectric layer, and for allowing a measurement sample to be brought into contact with this surface; a light source for introducing a beam into the metal layer from one end of the metal layer in a longitudinal direction of the metal layer; and a detection unit detecting a beam emitted from the other end of the metal layer, has high sensitivity in measurement, is downsized, and is usable in a simple manner.
    • 表面等离子体共振传感器本发明涉及一种表面等离子体共振传感器,其具有第一电介质层,设置在第一电介质层上的金属层和覆盖该金属层的第二电介质层。 所述表面等离子体共振传感器包括:传感器主体,其设置有用于暴露所述金属层的面对所述第二介电层的一侧表面的一部分的开口,并且用于使所述测量样品与所述表面接触; 用于从所述金属层的所述金属层的纵向方向的一端引入光束到所述金属层的光源; 检测从金属层的另一端发射的光束的检测单元,测量灵敏度高,尺寸小,可以简单的使用。