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    RAPID PHASE RETRIEVAL BY LASING
    1.
    发明申请
    RAPID PHASE RETRIEVAL BY LASING 审中-公开

    公开(公告)号：WO2019211837A1

    公开(公告)日：2019-11-07

    申请号：PCT/IL2019/050473

    申请日：2019-04-29

    Applicant: YEDA RESEARCH AND DEVELOPMENT CO. LTD.

    Inventor： DAVIDSON, Nir ,  FRIESEM, Asher A. ,  RAZ, Oren ,  TRADONSKY, Chene

    IPC: H01S3/08 ,  H01S3/105 ,  H01S3/106 ,  H01S3/083 ,  H01S3/00 ,  H01S3/06 ,  H01S3/115

    Abstract: Laser systems and methods configured to reconstruct an image of an object from an input comprising: the object's scattered intensity distribution (SID) and the object's compact support; the system comprising: a first lens and a second lens, in a four-focal telescope configuration; a gain with a mirror at one end, at first end of the telescope, configured to amplify and reflect a received beam; a reflective spatial light modulator, at second end of the telescope, configured to selectively reflect intensity distributions of a received beam, according to their spatial location, the selective reflection is configured to maintain the intensity distributions of the object's SID; a spatial intensity binary mask, located between the telescope's lenses, comprising an aperture in the form of the object's compact support; the mask is configured to transfer only beams passing through the aperture. The reconstructed object's image is provided at least at the mask's aperture.

    SYSTEM AND METHOD FOR POLARIZATION MEASUREMENT
    2.
    发明申请
    SYSTEM AND METHOD FOR POLARIZATION MEASUREMENT 审中-公开
    用于偏振测量的系统和方法

    公开(公告)号：WO2011117873A1

    公开(公告)日：2011-09-29

    申请号：PCT/IL2011/000275

    申请日：2011-03-24

    Applicant: YEDA RESEARCH AND DEVELOPMENT Co. LTD ,  DAVIDSON, Nir ,  FRIESEM, Asher ,  FRIDMAN, Moti

    Inventor： DAVIDSON, Nir ,  FRIESEM, Asher ,  FRIDMAN, Moti

    IPC: G01J4/04

    CPC classification number: G01J4/04 ,  G01J4/02

    Abstract: A system and method are presented for use in measuring polarization of an optical beam. The system is configured and operable for determining polarization profile along a cross section of the input optical beam, and comprises an optical system and a pixel matrix. The optical system comprises a polarization beam splitting assembly configured and operable for splitting said input optical beam into a predetermined number of beam components with a predetermined polarization relation between them, the polarization beam splitting assembly comprising a first polarization beam splitter in an optical path of the input optical beam splitting said input optical beam into a first plurality of beam components with a certain polarization relation between them and a birefringent element in an optical path of said first plurality of the beam components for splitting each of them into a pair of beams having ordinary and extraordinary polarizations, thereby producing said predetermined number of output beam components. The pixel matrix is located in substantially non intersecting optical paths of said output beam components and generates a corresponding number of output data pieces indicative of intensity distribution within said output beam components, respectively, data contained in said data pieces being indicative of the polarization profile along the cross section of the input optical beam.

    Abstract translation: 提出了一种用于测量光束偏振的系统和方法。 该系统被配置和操作用于沿着输入光束的横截面确定偏振分布，并且包括光学系统和像素矩阵。 光学系统包括偏振分束组件，其被配置和可操作用于将所述输入光束分成具有预定偏振关系的预定数量的光束分量，所述偏振分束组件包括位于所述第一偏振分束器的光路中的第一偏振分束器 输入光束将所述输入光束分解成在它们之间具有一定偏振关系的第一多个光束分量和在所述第一多个光束分量的光路中的双折射元件，以将它们中的每一个分成具有普通的一对光束 和非常极化，从而产生所述预定数量的输出光束分量。 像素矩阵位于所述输出光束分量的基本上非相交的光路中，并且分别产生指示所述输出光束分量内的强度分布的相应数量的输出数据段，所述数据段中包含的数据表示沿着 输入光束的横截面。

    OPTICAL RESONATORS WITH ORTHOGONALLY POLARIZED MODES
    3.
    发明授权
    OPTICAL RESONATORS WITH ORTHOGONALLY POLARIZED MODES 有权
    采用正交偏振模式光学谐振腔

    公开(公告)号：EP1226637B1

    公开(公告)日：2006-12-27

    申请号：EP00960947.0

    申请日：2000-09-13

    Applicant: YEDA RESEARCH AND DEVELOPMENT CO. LTD.

    Inventor： FRIESEM, Asher, A., Weizmann Institute of Science ,  BLIT, Shmuel ,  ORON, Ram ,  HASMAN, Erez ,  DAVIDSON, Nir

    IPC: H01S3/10

    CPC classification number: H01S3/08036 ,  H01S3/08054 ,  H01S3/082 ,  H01S3/106 ,  H01S2301/20 ,  H01S2301/203

    Abstract: An optical resonator supporting two sets of simultaneously co-existent oscillation modes (30 and 31), having polarizations orthogonal to each other. Mode control elements (28 and 29), such as apertures and phase elements, are introduced into the resonato to allow only preferred modes to exist. The placement and orientation of the sets are designed such that the high intensity zones of one set fall on the nodes or low intensity zones of the other set in an interlaced pattern. Thus, in a laser resonator, better utilization of the gain medium (24) is achieved and the beam quality and brightness over multimode lasing are improved. This configuration improves the performance of high Fresnel number resonators, in both pulsed and continuous lasers, for applications such as scribing, drilling, cutting, target designation and rangefinding. An application of the intra-cavity coherent summation of orthogonally polarized modes is described, whereby azimuthally or radially polarized beams may be obtained.

    OPTICAL RESONATORS WITH ORTHOGONALLY POLARIZED MODES
    4.
    发明公开
    OPTICAL RESONATORS WITH ORTHOGONALLY POLARIZED MODES 有权
    采用正交偏振模式光学谐振腔

    公开(公告)号：EP1226637A1

    公开(公告)日：2002-07-31

    申请号：EP00960947.0

    申请日：2000-09-13

    Applicant: YEDA RESEARCH AND DEVELOPMENT CO. LTD.

    Inventor： FRIESEM, Asher, A.Weizmann Institute of Science ,  BLIT, Shmuel ,  ORON, Ram ,  HASMAN, Erez ,  DAVIDSON, Nir

    IPC: H01S3/10

    CPC classification number: H01S3/08036 ,  H01S3/08054 ,  H01S3/082 ,  H01S3/106 ,  H01S2301/20 ,  H01S2301/203

    Abstract: An optical resonator supporting two sets of simultaneously co-existent oscillation modes (30 and 31), having polarizations orthogonal to each other. Mode control elements (28 and 29), such as apertures and phase elements, are introduced into the resonato to allow only preferred modes to exist. The placement and orientation of the sets are designed such that the high intensity zones of one set fall on the nodes or low intensity zones of the other set in an interlaced pattern. Thus, in a laser resonator, better utilization of the gain medium (24) is achieved and the beam quality and brightness over multimode lasing are improved. This configuration improves the performance of high Fresnel number resonators, in both pulsed and continuous lasers, for applications such as scribing, drilling, cutting, target designation and rangefinding. An application of the intra-cavity coherent summation of orthogonally polarized modes is described, whereby azimuthally or radially polarized beams may be obtained.

    SYSTEM AND METHOD FOR POLARIZATION MEASUREMENT
    6.
    发明公开
    SYSTEM AND METHOD FOR POLARIZATION MEASUREMENT 审中-公开
    VERFAHRENFÜRPOLARISATIONSMESSUNG系统

    公开(公告)号：EP2550514A1

    公开(公告)日：2013-01-30

    申请号：EP11718505.8

    申请日：2011-03-24

    Applicant: Yeda Research and Development Co. Ltd.

    Inventor： DAVIDSON, Nir ,  FRIESEM, Asher ,  FRIDMAN, Moti

    IPC: G01J4/04

    CPC classification number: G01J4/04 ,  G01J4/02

    Abstract: A system and method are presented for use in measuring polarization of an optical beam. The system is configured and operable for determining polarization profile along a cross section of the input optical beam, and comprises an optical system and a pixel matrix. The optical system comprises a polarization beam splitting assembly configured and operable for splitting said input optical beam into a predetermined number of beam components with a predetermined polarization relation between them, the polarization beam splitting assembly comprising a first polarization beam splitter in an optical path of the input optical beam splitting said input optical beam into a first plurality of beam components with a certain polarization relation between them and a birefringent element in an optical path of said first plurality of the beam components for splitting each of them into a pair of beams having ordinary and extraordinary polarizations, thereby producing said predetermined number of output beam components. The pixel matrix is located in substantially non intersecting optical paths of said output beam components and generates a corresponding number of output data pieces indicative of intensity distribution within said output beam components, respectively, data contained in said data pieces being indicative of the polarization profile along the cross section of the input optical beam.

    Abstract translation: 使用光学系统沿着输入光束横截面测量偏振轮廓包括偏振分束组件，其用于将输入光束分成具有预定偏振关系的预定数量的光束分量，并且包括光学中的偏振分束器 输入光束的路径将其分离成具有偏振关系的光束分量和光束分量的光路中的双折射元件，以将它们中的每一个分成具有普通和非常偏振的一对光束，从而产生预定数量的输出光束 组件。 像素矩阵位于输出光束分量的基本上不相交的光路中，并且产生指示输出光束分量内的强度分布的多个输出数据片段，其中包含的数据表示沿着输入光束交叉的偏振轮廓， 部分。

    Laser resonator cavity configuration
    7.
    发明授权
    Laser resonator cavity configuration 有权
    激光谐振腔配置

    公开(公告)号：EP1706922B1

    公开(公告)日：2011-08-24

    申请号：EP04806673.2

    申请日：2004-12-16

    Applicant: YEDA RESEARCH AND DEVELOPMENT CO., LTD.

    Inventor： ISHAAYA, Amiel, A. ,  DAVIDSON, Nir ,  FRIESEM, Asher A. ,  SHIMSHI, Liran

    IPC: H01S3/07 ,  H01S3/10 ,  H01S5/40 ,  H01S3/23 ,  G02B27/10 ,  G02B27/14 ,  G02B27/28

    CPC classification number: H01S3/07 ,  H01S3/0805 ,  H01S3/08054 ,  H01S3/08059 ,  H01S3/08063 ,  H01S3/08068 ,  H01S3/0811 ,  H01S3/0816 ,  H01S3/082 ,  H01S3/10 ,  H01S3/10092 ,  H01S3/1106 ,  H01S3/1307 ,  H01S3/2383 ,  H01S5/4012 ,  H01S5/4025 ,  H01S5/4062

    Abstract: A resonator cavity (10A) and method and presented. The resonator cavity (10A) comprises at least one gain medium (16) and end reflectors (12, 14) which define together longitudinal modes of light in the cavity, and further comprises an intra-cavity beam coupler assembly (20). The beam coupler assembly (20) is configured to split light impinging thereon into a predetermined number of spatially separated light channels, and to cause phase locking and at least partial coherent combining of the light channels, having common longitudinal and transverse modes, in a double pass through the beam coupler assembly (20). The resonator cavity (10A) is configured and operable to produce at least one output combined light channel of a predetermined intensity profile.

    Abstract translation: 一种谐振器腔体（10A）和方法和介绍。 谐振器腔体（10A）包括至少一个增益介质（16）和端部反射器（12,14），所述增益介质和端部反射器在腔体中一起限定光的纵向模式，并且还包括腔内光束耦合器组件（20）。 光束耦合器组件（20）被配置为将入射到其上的光分成预定数量的空间分离的光通道，并且使具有共同纵向和横向模式的光通道的相位锁定和至少部分相干组合成双倍 穿过光束耦合器组件（20）。 谐振腔（10A）被配置并可操作以产生预定强度分布的至少一个输出组合光通道。

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