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公开(公告)号：US06850544B2
公开(公告)日：2005-02-01
申请号：US10099473
申请日：2002-03-15
Applicant: Asher A. Friesem , Shmuel Blit , Ram Oron , Erez Hasman , Nir Davidson
Inventor： Asher A. Friesem , Shmuel Blit , Ram Oron , Erez Hasman , Nir Davidson
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 resonator 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.
Abstract translation: 支持两组同时共存的振荡模式（30和31）的光学谐振器，具有彼此正交的极化。 将模式控制元件（28和29）（诸如孔径和相位元件）引入到谐振器中，以仅允许存在优选的模式。 这些组的放置和取向被设计成使得一组的高强度区域以交错图案落在另一组的节点或低强度区域上。 因此，在激光谐振器中，实现了增益介质（24）的更好的利用，并提高了多模激光的光束质量和亮度。 这种配置提高了脉冲和连续激光器中高菲涅尔数谐振器的性能，适用于诸如划线，钻孔，切割，目标指定和测距等应用。 描述了正交偏振模式的腔内相干求和的应用，由此可以获得方位角或径向偏振光束。
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公开(公告)号：US06587255B2
公开(公告)日：2003-07-01
申请号：US10021903
申请日：2001-12-13
Applicant: Nir Davidson , Nir Friedman , Ariel Kaplan
Inventor： Nir Davidson , Nir Friedman , Ariel Kaplan
IPC: G02F133
CPC classification number: G02F1/33
Abstract: An acousto-optic scanning system, which relies on two counter propagating acoustic waves with the same frequency modulation. This scheme completely suppresses the linear frequency chirp, and thus enables the generation of fast non-linear scans and non-constant linear scans. By changing the phase between the modulating signals, this scheme also provides fast longitudinal scans of the focal point.
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公开(公告)号：US07933301B2
公开(公告)日：2011-04-26
申请号：US12457318
申请日：2009-06-08
Applicant: Amiel A. Ishaaya , Nir Davidson , Asher A. Friesem , Liran Shimshi
Inventor： Amiel A. Ishaaya , Nir Davidson , Asher A. Friesem , Liran Shimshi
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 are provided. The resonator cavity (10A) includes at least one gain medium (16) and end reflectors (12, 14) which define together longitudinal modes of light in the cavity, and further includes 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: 提供了谐振腔（10A）和方法。 谐振器腔（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（12,14）一起限定空腔中的纵向光模式，并且还包括腔内光束耦合器组件（20）。 光束耦合器组件（20）被配置成将入射到其上的光分解成预定数量的空间分离的光通道，并且使得具有共同的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在双 穿过光束耦合器组件（20）。 谐振器腔（10A）被配置和可操作以产生具有预定强度分布的至少一个输出组合光通道。
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公开(公告)号：US20090245295A1
公开(公告)日：2009-10-01
申请号：US12457318
申请日：2009-06-08
Applicant: Amiel A. Ishaaya , Nir Davidson , Asher A. Friesem , Liran Shimshi
Inventor： Amiel A. Ishaaya , Nir Davidson , Asher A. Friesem , Liran Shimshi
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 are provided. The resonator cavity (10A) includes at least one gain medium (16) and end reflectors (12, 14) which define together longitudinal modes of light in the cavity, and further includes 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: 提供了谐振腔（10A）和方法。 谐振器腔（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（12,14）一起限定空腔中的纵向光模式，并且还包括腔内光束耦合器组件（20）。 光束耦合器组件（20）被配置成将入射到其上的光分解成预定数量的空间分离的光通道，并且使得具有共同的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在双 穿过光束耦合器组件（20）。 谐振器腔（10A）被配置和可操作以产生具有预定强度分布的至少一个输出组合光通道。
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Patent Agency Ranking
公开(公告)号：US07555024B2
公开(公告)日：2009-06-30
申请号：US10583125
申请日：2004-12-16
Applicant: Amiel A. Ishaaya , Nir Davidson , Asher A. Friesem , Liran Shimshi
Inventor： Amiel A. Ishaaya , Nir Davidson , Asher A. Friesem , Liran Shimshi
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: 一种谐振腔（10A）及其方法。 谐振器腔（10A）包括至少一个增益介质（16）和端部反射器（12,14），端部反射器（12,14）将空腔中的纵向光模式定义在一起，并且还包括腔内光束耦合器组件（20）。 光束耦合器组件（20）被配置成将入射到其上的光分解成预定数量的空间分离的光通道，并且使得具有共同的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在双 穿过光束耦合器组件（20）。 谐振器腔（10A）被配置和可操作以产生具有预定强度分布的至少一个输出组合光通道。
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公开(公告)号：US08797532B2
公开(公告)日：2014-08-05
申请号：US13636983
申请日：2011-03-24
Applicant: Nir Davidson , Asher Friesem , Moti Fridman
Inventor： Nir Davidson , Asher Friesem , Moti Fridman
IPC: G01J4/00
Abstract: Measuring polarization profile along an input optical beam cross-section using an optical system includes a polarization beam splitting assembly for splitting the input beam into a predetermined number of beam components with a predetermined polarization relation between them, and including a polarization beam splitter in an optical path of the input beam splitting it into beam components having a polarization relationship and a birefringent element in an optical path of the beam components for splitting each of them into a pair of beams having ordinary and extraordinary polarizations, thereby producing the predetermined number of output beam components. The pixel matrix is located in substantially non-intersecting optical paths of the output beam components and generates a number of output data pieces indicative of intensity distribution within the output beam components and data contained therein being indicative of the polarization profile along the input beam cross-section.
Abstract translation: 使用光学系统沿着输入光束横截面测量偏振曲线包括偏振分束组件，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裂为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，用于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。
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公开(公告)号：US20130010295A1
公开(公告)日：2013-01-10
申请号：US13636983
申请日：2011-03-04
Applicant: Nir Davidson , Asher Friesem , Moti Fridman
Inventor： Nir Davidson , Asher Friesem , Moti Fridman
IPC: G01J4/00
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。
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公开(公告)号：US5880846A
公开(公告)日：1999-03-09
申请号：US918587
申请日：1997-08-19
Applicant: Erez Hasman , Asher A. Friesem , Nir Davidson
Inventor： Erez Hasman , Asher A. Friesem , Nir Davidson
CPC classification number: G01B11/2509 , G01B2210/50
Abstract: A triangulation optical system and method for determining at least one coordinate of a surface of an object, along at least one coordinate axis which is substantially transverse to the surface. The method includes the steps of providing incident light of a substantially wide wavelength bandwidth propagating along the axis. Passing the light through an axially dispersing optics so that the light of different wavelengths is focussed at different locations relative to the axis. The different locations defining a multi-colored measuring area and a distance between extreme locations along the axis defining a depth of measuring range. Further, off-axis imaging of the measuring area, detecting intensity of the image and determining the coordinate of the intersection of the surface with the measuring area.
Abstract translation: 一种三角测量光学系统和方法，用于沿着基本上横向于表面的至少一个坐标轴确定物体的表面的至少一个坐标。 该方法包括提供沿着轴传播的基本上宽的波长带宽的入射光的步骤。 使光通过轴向分散光学元件，使得不同波长的光聚焦在相对于轴的不同位置处。 定义多色测量区域的不同位置以及沿轴线的极限位置之间的距离限定了测量范围的深度。 此外，测量区域的离轴成像，检测图像的强度并确定表面与测量区域的交点的坐标。
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公开(公告)号：US6134259A
公开(公告)日：2000-10-17
申请号：US142626
申请日：1998-12-23
Applicant: Yochay Danziger , Erez Hasman , Nir Davidson
Inventor： Yochay Danziger , Erez Hasman , Nir Davidson
CPC classification number: H01S3/0804 , H01S2301/20 , H01S3/03 , H01S3/061 , H01S3/0805 , H01S3/08068 , H01S3/082 , H01S3/083 , H01S3/0941 , H01S3/10076 , H01S3/2232
Abstract: This invention discloses an optical resonator (24) including at least one spiral optical element (44) operative to change the angular phase distribution of modes in the optical resonator (24), thereby to generally eliminate undesirable modes.
Abstract translation: PCT No.PCT / IL97 / 00064 Sec。 371日期1998年12月23日第 102（e）日期1998年12月23日PCT 1997年2月18日提交PCT公布。 公开号WO97 / 34344 日期：1997年9月18日本发明公开了一种光学谐振器（24），其包括至少一个螺旋形光学元件（44），其操作以改变光学谐振器（24）中的模式的角度相位分布，从而通常消除不期望的模式。
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