利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

170 条记录 (耗时 0.02 秒)

    EXTERNAL CAVITY LASER AND TUNING METHOD THEREFOR
    43.
    发明公开
    EXTERNAL CAVITY LASER AND TUNING METHOD THEREFOR 审中-公开

    公开(公告)号：US20240154388A1

    公开(公告)日：2024-05-09

    申请号：US18412828

    申请日：2024-01-15

    申请人： InnoLight Technology (Suzhou) Ltd.

    发明人： Chen-lei LI ,  Xue-zhe ZHENG

    IPC分类号： H01S5/14 ,  H01S5/026 ,  H01S5/042 ,  H01S5/06 ,  H01S5/10

    CPC分类号： H01S5/141 ,  H01S5/026 ,  H01S5/04256 ,  H01S5/0612 ,  H01S5/1007

    摘要： An external cavity laser and a tuning method therefor are provided. The external cavity laser includes a gain chip, and a tunable reflector. The tunable reflector includes a main waveguide, a beam splitter, a first branch waveguide, a first photonic crystal modulator, a second branch waveguide, and a second photonic crystal modulator. The beam splitter is configured to equally split the optical signal transmitted by the main waveguide into a first optical signal and a second optical signal and is configured to transmit the first optical signal to a first branch waveguide and the second optical signal to a second branch waveguide. A first photonic crystal modulator is configured to tune the first optical signal transmitted by the first branch waveguide. A second photonic crystal modulator is configured to tune the second optical signal transmitted by the second branch waveguide.

    Semiconductor light emitting element
    45.
    发明授权
    Semiconductor light emitting element 有权

    公开(公告)号：US11955772B2

    公开(公告)日：2024-04-09

    申请号：US17210939

    申请日：2021-03-24

    申请人： DENSO CORPORATION ,  KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION

    发明人： Yuki Kamata ,  Koichi Oyama ,  Hiroyuki Tarumi ,  Kiichi Hamamoto ,  Haisong Jiang

    IPC分类号： H01S5/10 ,  H01S5/026 ,  H01S5/042

    CPC分类号： H01S5/1003 ,  H01S5/026 ,  H01S5/04256

    摘要： A semiconductor light emitting element includes an optical waveguide having a first and second waveguide provided with a width that allows propagation of light in a second-order mode or higher and a multimode optical interference waveguide provided with a wider width than the first and second waveguide and arranged at a position therebetween. The semiconductor light emitting element further includes a first optical loss layer facing the first waveguide in an active-layer crossing direction for causing a loss of light that is propagating in the first waveguide in the second-order mode or higher and a second optical loss layer facing the second waveguide in an active-layer crossing direction for causing a loss of light that is propagating in the second waveguide in the second-order mode or higher, the active-layer crossing direction being orthogonal to a surface of an active layer.

    Laser Architectures Using Quantum Well Intermixing Techniques
    46.
    发明公开
    Laser Architectures Using Quantum Well Intermixing Techniques 审中-公开

    公开(公告)号：US20240113508A1

    公开(公告)日：2024-04-04

    申请号：US18244752

    申请日：2023-09-11

    申请人： Apple Inc.

    发明人： Alfredo Bismuto ,  Mark Alan Arbore ,  Ross M. Audet

    IPC分类号： H01S5/40 ,  H01S5/042 ,  H01S5/16 ,  H01S5/20 ,  H01S5/22 ,  H01S5/34

    CPC分类号： H01S5/4087 ,  H01S5/04256 ,  H01S5/162 ,  H01S5/2059 ,  H01S5/2228 ,  H01S5/3414

    摘要： A laser chip including a plurality of stripes is disclosed, where a laser stripe can be grown with an initial optical gain profile, and its optical gain profile can be shifted by using an intermixing process. In this manner, multiple laser stripes can be formed on the same laser chip from the same epitaxial wafer, where at least one laser stripe can have an optical gain profile shifted relative to another laser stripe. For example, each laser stripe can have a shifted optical gain profile relative to its neighboring laser stripe, thereby each laser stripe can emit light with a different range of wavelengths. The laser chip can emit light across a wide range of wavelengths. Examples of the disclosure further includes different regions of a given laser stripe having different intermixing amounts.

    SEMICONDUCTOR OPTICAL DEVICE
    49.
    发明公开
    SEMICONDUCTOR OPTICAL DEVICE 审中-公开

    公开(公告)号：US20240038907A1

    公开(公告)日：2024-02-01

    申请号：US18146168

    申请日：2022-12-23

    申请人： Lumentum Japan, Inc.

    发明人： Shuhei ONO ,  Takayuki NAKAJIMA

    IPC分类号： H01L31/0224 ,  H01S5/042 ,  G02F1/015 ,  H01L31/0216 ,  H01L31/0352

    CPC分类号： H01L31/022408 ,  H01S5/04256 ,  G02F1/0155 ,  H01L31/02161 ,  H01L31/035281

    摘要： A substrate includes first and second sides, the first side being flat, the second side including upper and lower sides, the lower side protruding from the upper side to form a step. An optical function layer is on a top of the substrate, the optical function layer including first and second end faces, the first end face being flush with the first side, the second end face being flush with the upper side of the second side. A first film continuously covers the first end face and the first side. A second film is different in reflectance from the first film, the second film continuously covering the second end face and the upper side. A first electrode is electrically connected to a top of the optical function layer. A second electrode is electrically connected to a bottom of the optical function layer.

    LASER AND LIDAR COMPRISING THE LASER
    50.
    发明公开
    LASER AND LIDAR COMPRISING THE LASER 审中-公开

    公开(公告)号：US20240019548A1

    公开(公告)日：2024-01-18

    申请号：US18374467

    申请日：2023-09-28

    申请人： Hesai Technology Co., Ltd.

    发明人： Wei LI ,  Jie CHEN ,  Yong XIAO ,  Shaoqing XIANG

    IPC分类号： G01S7/481 ,  H01S5/042 ,  H01S5/42 ,  G01S7/484

    CPC分类号： G01S7/4815 ,  H01S5/04256 ,  H01S5/426 ,  G01S7/484

    摘要： Provided in the present disclosure is a laser for use in a LiDAR, the laser comprising: a plurality of light-emitting units, each light-emitting unit comprising a plurality of light-emitting points, wherein the plurality of light-emitting units share a cathode or an anode; and each light-emitting unit is respectively provided with a wiring unit; and each wiring unit is electrically connected to an unshared anode or cathode of its corresponding light-emitting unit. The area of a laser provided with a plurality of light-emitting units does not increase, and echo light beams generated from detection light beams emitted by the plurality of light-emitting units are received by the same detector, thereby improving the vertical angular resolution and point cloud density of a LiDAR.