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    • 94. 发明授权
    • Two-dimensional photonic crystal surface emitting laser light source
    • 二维光子晶体表面发射激光光源
    • US08923358B2
    • 2014-12-30
    • US12225530
    • 2007-03-30
    • Susumu NodaYoshitaka KurosakaEiji MiyaiDai OhnishiWataru Kunishi
    • Susumu NodaYoshitaka KurosakaEiji MiyaiDai OhnishiWataru Kunishi
    • H01S3/08H01S5/183H01S5/10
    • H01S5/183H01S5/105
    • A two-dimensional photonic crystal surface emitting laser light source includes a two-dimensional photonic crystal made of a plate-shaped body material provided with a periodic arrangement of identically-shaped holes and an active layer. The hole is not located on a first half-line extending from the gravity center of the hole, while the hole is located on a second half-line extending in the direction opposite to the first half-line. Injecting electric charges into the active layer generates light, which creates an electric field encircling the gravity center. For a given point on the second half-line where the hole is located, there is no hole at a point that is symmetrical to the aforementioned point with respect to the gravity center, so that the electric field vectors at the two points do not cancel each other and the laser light is stronger than conventional examples.
    • 二维光子晶体发射激光光源包括由板状主体材料制成的二维光子晶体,该二维光子晶体具有相同形状的孔和有源层的周期性排列。 孔不位于从孔的重心延伸的第一半线上,而孔位于沿与第一半线相反的方向延伸的第二半线上。 将有效层中的电荷注入发光,产生围绕重心的电场。 对于孔所在的第二半线上的给定点,在相对于重心与上述点对称的点处没有孔,使得两点处的电场矢量不取消 激光与传统的例子相比更强。
    • 95. 发明授权
    • 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
    • US08711895B2
    • 2014-04-29
    • US13137693
    • 2011-09-02
    • Susumu NodaEiji MiyaiDai Ohnishi
    • Susumu NodaEiji MiyaiDai Ohnishi
    • H01S5/183
    • 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。
    • 97. 发明授权
    • Photonic crystal laser
    • 光子晶体激光器
    • US08284814B2
    • 2012-10-09
    • US12230494
    • 2008-08-29
    • Susumu NodaYoshitaka KurosakaKyosuke SakaiEiji MiyaiDai OhnishiWataru Kunishi
    • Susumu NodaYoshitaka KurosakaKyosuke SakaiEiji MiyaiDai OhnishiWataru Kunishi
    • H01S3/08
    • H01S5/10G02B2006/1213G11B7/0903G11B7/127H01S5/105H01S5/1215H01S5/1231
    • A laser capable of emitting multiple laser beams is provided. A two-dimensional photonic crystal laser according to the present invention has a laminated structure including an active layer, a first photonic crystal layer having a periodic distribution of refractive index with a first period, and a second photonic crystal layer having a periodic distribution of refractive index with a second period that differs from the first period. This two-dimensional photonic crystal laser can emit a main beam traveling in a direction perpendicular to the two-dimensional photonic crystals and side beams each traveling in a direction inclined with respect to the main beam. These beams can be used, for example, in a recording/reproducing device by means of an optical disk, the main beam being used for recording/reproducing information and the side beams for following up the track.
    • 提供了能够发射多个激光束的激光器。 根据本发明的二维光子晶体激光器具有叠层结构,其包括有源层,具有第一周期的折射率的周期性分布的第一光子晶体层和具有折射率的周期性分布的第二光子晶体层 第二期的指数与第一期不同。 该二维光子晶体激光器可以发射在垂直于二维光子晶体的方向上行进的主光束和每个沿相对于主光束倾斜的方向行进的侧光束。 这些光束例如可以通过光盘用于记录/再现装置中,主光束用于记录/再现信息,并且侧光束用于跟踪轨道。
    • 100. 发明授权
    • Photonic crystal laser
    • 光子晶体激光器
    • US07860141B2
    • 2010-12-28
    • US11919344
    • 2005-04-28
    • Susumu NodaMasahiro ImadaDai Ohnishi
    • Susumu NodaMasahiro ImadaDai Ohnishi
    • H01S5/00
    • H01S5/0425B41J2/45H01S5/06243H01S5/105H01S5/18H01S2301/18
    • One objective of the present invention is to provide a laser device which is capable of scanning beams of a laser light of high output power at a high speed without using mechanical scanning mechanisms. A plurality of the upper electrodes 33 is linearly arranged in the photonic crystal laser provided with an active layer 21 and a two-dimensional photonic crystal layer 23 which are held between upper electrodes 33 and a lower electrode 27. A current is introduced from one upper electrode 33 or the plurality of the upper electrodes 33 disposed adjacently. Therefore, the active layer 21 generates light and the light is intensified by diffraction in the two-dimensional photonic crystal layer 23, so that a stronger laser light is emitted to the outside from around the upper electrodes 33 into which a current is introduced. When the current-injected upper electrodes are sequentially switched, a laser light scan is performed in the direction of the array of the upper electrodes. Since this switching can be made electrically, a laser light scan can be achieved at a high speed without using the mechanical scanning mechanisms.
    • 本发明的一个目的是提供一种能够在不使用机械扫描机构的情况下高速扫描高输出功率的激光的光束的激光装置。 多个上部电极33线性排列在设置有被保持在上部电极33和下部电极27之间的有源层21和二维光子晶体层23的光子晶体激光器中。从一个上部电极引入电流 电极33或相邻设置的多个上电极33。 因此,有源层21产生光,并且通过二维光子晶体层23中的衍射增强光,使得更强的激光从引入电流的上电极33的周围向外部发射。 当依次切换电流注入的上电极时,在上电极阵列的方向上执行激光扫描。 由于可以进行该切换,因此可以在不使用机械扫描机构的情况下高速实现激光扫描。