TWO-DIMENSIONAL PHOTONIC CRYSTAL SURFACE LIGHT EMITTING LASER LIGHT SOURCE
    21.
    发明公开
    TWO-DIMENSIONAL PHOTONIC CRYSTAL SURFACE LIGHT EMITTING LASER LIGHT SOURCE 审中-公开
    OBERFLÄCHENEMITTIERENDELASERLICHTQUELLE MIT EINEM ZWEIDIMENSIONALEN PHOTONISCHEN KRISTALL

    公开(公告)号:EP1933431A1

    公开(公告)日:2008-06-18

    申请号:EP06783175.0

    申请日:2006-09-05

    IPC分类号: H01S5/18

    摘要: 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 24 created from a plate-shaped matrix body in which a large number of holes 25 are periodically arranged and an active layer 23 arranged on one side of the two-dimensional photonic crystal layer 24, the holes 25 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 24, 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.

    摘要翻译: 本发明旨在提供使用二维光子晶体的表面发射激光光源,其中在垂直于表面的方向上提取光的效率高。 在设置有二维光子晶体层24的激光光源中,该二维光子晶体层24由周期性排列有大量孔25的板状矩阵体和在二维光子晶体一侧配置的有源层23 如图24所示,孔25被形成为具有预定横截面形状的圆柱状,例如圆形,并且每个柱状孔的主轴倾斜到矩阵体的表面。 当提供这个二维光子晶体层24时,使用二维光子晶体的表面发射激光源具有数千的QŠ值(即垂直于表面的方向的Q值),这是 适合于激光的振荡,并且在垂直于表面的方向上提取光的效率高。

    Optical scanning apparatus and image forming apparatus
    22.
    发明公开
    Optical scanning apparatus and image forming apparatus 有权
    Betriebsvefahren einer optischen Abtastvorrichtung

    公开(公告)号:EP1882972A2

    公开(公告)日:2008-01-30

    申请号:EP07113004.1

    申请日:2007-07-24

    IPC分类号: G02B26/12

    摘要: In an optical scanning apparatus, when it is assumed that a scanning direction of light beams defected from a deflector (5) is a main scanning direction, and a direction orthogonal to the main scanning direction and to optical axes of both a first and a first optical systems (2, 3, 4, 11, 10, 6, 7, 8) is a sub scanning direction, a distance between the outermost light emitting diodes of a light source (1) in the main scanning direction is longer than that in the sub scanning direction.

    摘要翻译: 在光扫描装置中,当假设从偏转器(5)缺陷的光束的扫描方向为主扫描方向,与主扫描方向正交的方向和第一和第一 光学系统(2,3,4,11,10,6,7,8)是副扫描方向,在主扫描方向上的光源(1)的最外侧发光二极管之间的距离长于 副扫描方向。

    OPTICAL PHASE CONJUGATION LASER DIODE
    23.
    发明公开
    OPTICAL PHASE CONJUGATION LASER DIODE 审中-公开
    激光二极管,用于光相位共轭

    公开(公告)号:EP1856776A2

    公开(公告)日:2007-11-21

    申请号:EP06824678.4

    申请日:2006-03-07

    IPC分类号: H01S3/13

    摘要: A phase-conjugating resonator that includes a semiconductor laser diode apparatus that comprises a phase-conjugating array of retro-reflecting hexagon apertured hexahedral shaped corner-cube prisms (168), an electrically and/or optically pumped gain-region (160), (161), (162), a distributed bragg reflecting mirror-stack (165), a gaussian mode providing hemispherical shaped laser-emission-output metalized mirror (164). Wherein, optical phase conjugation is used to neutralize the phase perturbating contribution of spontaneous-emission, acoustic phonons, quantum-noise, gain-saturation, diffraction, and other intracavity aberrations and distortions that typically destabilize any sti mulated-emission (169) made to undergo amplifying oscillation within the invention's phase-conjugating resonator. Resulting in stablized high-power laser-emission-output into a single low-order fundamental transverse cavity mode and reversal of intra-cavity chirp that provides for high-speed internal modulation capable of transmitting data at around 20-Gigabits/ps.