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    Optical detector for measuring respective phases of multiple beams apparatus and method
    1.
    发明授权
    Optical detector for measuring respective phases of multiple beams apparatus and method 有权

    公开(公告)号：US09945731B1

    公开(公告)日：2018-04-17

    申请号：US14596825

    申请日：2015-01-14

    Applicant: HRL LABORATORIES LLC ,  HRL LABORATORIES LLC

    Inventor： Oleg M. Efimov ,  Keyvan R. Sayyah

    IPC: G01B9/02 ,  G01J9/02

    CPC classification number: G01J9/02 ,  G01J1/0437 ,  G01J1/0448 ,  G01J2009/0203 ,  G01J2009/0249

    Abstract: A system includes a source of laser beams forming an array, a source of a reference laser beam, and an optical detector for measuring respective phase differences between the array laser beams and the reference laser beam. The system includes a mask, having apertures with a shape, size and position identical to a shape, size and position of the array laser beams, and positioned in the reference laser beam to form respective beams of the reference laser beam corresponding to the beams from the array laser beams. A phase modulator phase modulates respective beams of one of (a) the array laser beams and (b) the beams of the reference laser from the mask. A photodetector receives the respective array laser beams and the corresponding reference laser beams from the mask to generate a composite signal. Processing circuitry is responsive to the composite signal for generating respective signals representing the phase differences of the individual laser beams from the reference laser beam.

    SINGLE CHIP SCANNING LIDAR AND METHOD OF PRODUCING THE SAME
    3.
    发明申请
    SINGLE CHIP SCANNING LIDAR AND METHOD OF PRODUCING THE SAME 有权
    单芯片扫描仪及其制作方法

    公开(公告)号：US20150378012A1

    公开(公告)日：2015-12-31

    申请号：US14317695

    申请日：2014-06-27

    Applicant: HRL LABORATORIES LLC

    Inventor： Keyvan Sayyah ,  Pamela R. Patterson ,  Oleg M. Efimov

    IPC: G01S7/481 ,  G01S17/02 ,  H01S5/12 ,  H01S5/026 ,  H01S5/02

    CPC classification number: G01S7/4817 ,  G01S7/4808 ,  G01S17/02 ,  G01S17/325 ,  G01S17/89 ,  H01S5/021 ,  H01S5/0215 ,  H01S5/0262 ,  H01S5/12

    Abstract: A chip-scale scanning lidar includes a two dimensional (2D) scanning micromirror for a transmit beam and a 2D scanning micromirror for a receive beam, a laser diode and a photodetector, a first waveguide and first grating outcoupler coupled to a front facet of the laser diode, a second waveguide and a second grating outcoupler coupled to a rear facet of the laser diode on a substrate. A first fixed micromirror, a second micromirror, a third micromirror, and a focusing component are in a dielectric layer bonded to the substrate over the laser diode and photodetector. The photodetector is optically coupled to the second fixed micromirror and the third fixed micromirror for coherent detection.

    Abstract translation: 芯片级扫描激光雷达包括用于发射光束的二维（2D）扫描微镜和用于接收光束的2D扫描微镜，激光二极管和光电检测器，第一波导和第一光栅输出耦合器，其耦合到 激光二极管，第二波导和第二光栅输出耦合器，耦合到衬底上的激光二极管的后面。 第一固定微镜，第二微镜，第三微镜和聚焦组件位于激光二极管和光电检测器上结合到衬底的电介质层中。 光电检测器光耦合到第二固定微镜和第三固定微镜用于相干检测。

    Self-forming diffraction gratings
    5.
    发明授权
    Self-forming diffraction gratings 有权
    自成像衍射光栅

    公开(公告)号：US09377567B1

    公开(公告)日：2016-06-28

    申请号：US13918711

    申请日：2013-06-14

    Applicant: HRL LABORATORIES, LLC

    Inventor： Alan J. Jacobsen ,  Oleg M. Efimov ,  William Carter ,  Sophia S. Yang

    IPC: G02B5/18

    CPC classification number: G02B5/1847 ,  G02B5/18 ,  G02B5/1857 ,  G03F7/0005

    Abstract: A diffraction grating and a method for fabricating the diffraction grating. In one embodiment, a layer of photo-monomer is applied to a substrate and the photomonomer is exposed to a collimated beam of light to form the diffraction grating. The intensity of the collimated beam of light incident on the layer of photo-monomer may have substantially no spatial variation across the first collimated beam of light.

    Abstract translation: 衍射光栅和衍射光栅的制造方法。 在一个实施方案中，将一层光单体施加到基底上，并将光单体暴露于准直光束以形成衍射光栅。 入射在光单体层上的准直光束的强度可能在第一准直光束上基本上没有空间变化。

    Single chip scanning lidar and method of producing the same
    6.
    发明授权
    Single chip scanning lidar and method of producing the same 有权
    单片扫描激光雷达及其制作方法

    公开(公告)号：US09310471B2

    公开(公告)日：2016-04-12

    申请号：US14317695

    申请日：2014-06-27

    Applicant: HRL LABORATORIES LLC

    Inventor： Keyvan Sayyah ,  Pamela R. Patterson ,  Oleg M. Efimov

    IPC: G01C3/08 ,  G01S7/481 ,  H01S5/026 ,  H01S5/02 ,  H01S5/12 ,  G01S17/02

    CPC classification number: G01S7/4817 ,  G01S7/4808 ,  G01S17/02 ,  G01S17/325 ,  G01S17/89 ,  H01S5/021 ,  H01S5/0215 ,  H01S5/0262 ,  H01S5/12

    Abstract: A chip-scale scanning lidar includes a two dimensional (2D) scanning micromirror for a transmit beam and a 2D scanning micromirror for a receive beam, a laser diode and a photodetector, a first waveguide and first grating outcoupler coupled to a front facet of the laser diode, a second waveguide and a second grating outcoupler coupled to a rear facet of the laser diode on a substrate. A first fixed micromirror, a second micromirror, a third micromirror, and a focusing component are in a dielectric layer bonded to the substrate over the laser diode and photodetector. The photodetector is optically coupled to the second fixed micromirror and the third fixed micromirror for coherent detection.

    Abstract translation: 芯片级扫描激光雷达包括用于发射光束的二维（2D）扫描微镜和用于接收光束的2D扫描微镜，激光二极管和光电检测器，第一波导和第一光栅输出耦合器，其耦合到 激光二极管，第二波导和第二光栅输出耦合器，耦合到衬底上的激光二极管的后面。 第一固定微镜，第二微镜，第三微镜和聚焦组件位于激光二极管和光电检测器上结合到衬底的电介质层中。 光电检测器光耦合到第二固定微镜和第三固定微镜用于相干检测。

    Tunable photonic RF circulator for simultaneous transmit and receive
    7.
    发明授权
    Tunable photonic RF circulator for simultaneous transmit and receive 有权
    可调光子射频循环器，用于同时发送和接收

    公开(公告)号：US09250452B1

    公开(公告)日：2016-02-02

    申请号：US13651399

    申请日：2012-10-13

    Applicant: HRL Laboratories, LLC

    Inventor： Daniel Yap ,  James H. Schaffner ,  Oleg M. Efimov

    IPC: G02B6/42 ,  G02F1/01 ,  H01P1/38 ,  G02B6/02 ,  G02B6/12

    CPC classification number: G02B6/02076 ,  G02B6/4279 ,  G02B2006/12142 ,  G02F1/0356 ,  G02F2201/305 ,  H04B2210/006

    Abstract: An photonic RF circulator is described that provides greater than 40 db of isolation between a Received RF signal and a Transmitted RF signal in a simultaneous transmit and receive device. The photonic RF circulator uses light modulated in an optical waveguide grating where the Received RF signal co-propagates with the light and the Transmitted RF signal counter-propagates with the light. Variations described within provide for broadening the bandwidth of the T/R isolation and rejection of various noise sources.

    Abstract translation: 描述了在同时发送和接收设备中在接收RF信号和发射RF信号之间提供大于40db隔离的光子RF环行器。 光子RF循环器使用在光波导光栅中调制的光，其中接收RF信号与光共同传播，并且发射的RF信号与光反向传播。 所描述的变化提供了扩展T / R隔离和拒绝各种噪声源的带宽。

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