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    Optical amplifier with multi-wavelength pumping
    1.
    发明授权
    Optical amplifier with multi-wavelength pumping 有权

    公开(公告)号：US10211593B1

    公开(公告)日：2019-02-19

    申请号：US15828415

    申请日：2017-11-30

    Applicant: LUMINAR TECHNOLOGIES, INC.

    Inventor： Laurance S. Lingvay ,  Alain Villeneuve ,  Jason M. Eichenholz

    IPC: G01C3/08 ,  H01S3/094 ,  H01S3/067 ,  H01S5/40 ,  G01S7/484 ,  H01S3/13 ,  G01S17/10 ,  G02B27/10

    Abstract: In one embodiment, an optical amplifier includes a first pump laser diode and a second pump laser diode. The first pump laser diode is configured to produce pump light that includes a first amount of optical power at a first wavelength, and the second pump laser diode is configured to produce pump light that includes a second amount of optical power at a second wavelength different from the first wavelength. The optical amplifier also includes an optical gain fiber configured to receive the pump light from the first and second pump laser diodes and provide optical gain for an optical signal propagating through the optical gain fiber. The optical amplifier further includes a controller configured to adjust the first amount of optical power produced by the first pump laser diode and the second amount of optical power produced by the second pump laser diode.

    Lidar system with optical trigger
    2.
    发明授权
    Lidar system with optical trigger 有权

    公开(公告)号：US10340651B1

    公开(公告)日：2019-07-02

    申请号：US16106238

    申请日：2018-08-21

    Applicant: Luminar Technologies, Inc.

    Inventor： Mark A. Drummer ,  Scott R. Campbell ,  Alain Villeneuve ,  Laurance S. Lingvay

    IPC: G01C3/08 ,  H01S3/094 ,  H01S3/067 ,  H01S3/16 ,  G01S7/481 ,  G01S17/42 ,  G01S7/486 ,  G01S17/10

    Abstract: In one embodiment, a lidar system includes a light source configured to emit a ranging pulse of light that is directed into a field of regard of the lidar system. The lidar system also includes a fiber-optic splitter configured to split off a portion of the ranging pulse of light to produce a trigger pulse of light that is directed to a receiver of the lidar system. The receiver is configured to detect, at a first time, at least a portion of the trigger pulse of light; and detect, at a second time subsequent to the first time, a portion of the ranging pulse of light scattered by a target located a distance from the lidar system. The lidar system further includes a processor configured to determine the distance from the lidar system to the target based at least in part on the first time and the second time.

    Reducing the number of false detections in a lidar system
    3.
    发明授权
    Reducing the number of false detections in a lidar system 有权

    公开(公告)号：US10295668B2

    公开(公告)日：2019-05-21

    申请号：US15843652

    申请日：2017-12-15

    Applicant: LUMINAR TECHNOLOGIES, INC.

    Inventor： Joseph G. LaChapelle ,  Jason M. Eichenholz ,  Laurance S. Lingvay

    IPC: G01S17/10 ,  G01S7/484

    Abstract: A light source includes a laser configured to emit a ranging pulse including a sequence of fast pulses. A lidar system uses one or more properties of the sequence of fast pulses to determine a signature of the ranging pulse. A receiver includes a detector element configured to detect a light signal and a signature detection circuitry configured to determine whether the detected light signal corresponds to the signature of the emitted ranging pulse. The lidar system is configured to generate a pixel value based on the detected light signal if the detected light signal corresponds to the signature of the emitted ranging pulse.

    Fiber laser with free-space components
    4.
    发明授权
    Fiber laser with free-space components 有权

    公开(公告)号：US10211592B1

    公开(公告)日：2019-02-19

    申请号：US15985486

    申请日：2018-05-21

    Applicant: LUMINAR TECHNOLOGIES, INC.

    Inventor： Alain Villeneuve ,  Jason M. Eichenholz ,  Laurance S. Lingvay

    IPC: H01S3/09 ,  H01S3/094 ,  G01S7/48 ,  H01S5/00 ,  G02B27/09 ,  H01S3/08 ,  H01S3/00 ,  H01S3/067 ,  G01S17/10 ,  G01S7/486

    Abstract: In one embodiment, a laser system includes a seed laser diode configured to produce a free-space seed-laser beam. The laser system also includes a pump laser diode configured to produce a free-space pump-laser beam. The laser system further includes an optical-beam combiner configured to combine the seed-laser and pump-laser beams into a combined free-space beam and a focusing lens configured to focus the combined beam. The laser system also includes an optical gain fiber that includes an input end configured to receive the focused beam. The laser system also includes a mounting platform, where one or more of the optical-beam combiner, the focusing lens, and the input end of the gain fiber are mechanically attached to the platform.

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