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    Diffraction grating, laser apparatus, and manufacturing method for diffraction grating
    6.
    发明授权
    Diffraction grating, laser apparatus, and manufacturing method for diffraction grating 有权
    衍射光栅，激光装置和衍射光栅的制造方法

    公开(公告)号：US09583910B2

    公开(公告)日：2017-02-28

    申请号：US14641890

    申请日：2015-03-09

    申请人： CANON KABUSHIKI KAISHA

    发明人： Tsuyoshi Kitamura

    IPC分类号： G02B5/18 ,  H01S3/08 ,  H01S3/034 ,  H01S3/225 ,  H01S3/13

    CPC分类号： H01S3/08009 ,  G02B5/1852 ,  G02B5/1861 ,  H01S3/034 ,  H01S3/1305 ,  H01S3/2251

    摘要： This diffraction grating is a reflection-type diffraction grating that has a grating, the cross section of which is an asymmetrical triangular shape, and wherein given that θ denotes an angle between a short side and a base of the triangular shape, and φ denotes an angle between the short side and a long side of the triangular shape, and α denotes an incident angle of light to a normal of the base, the angles θ and φ satisfy a condition represented by the following formulas: φ+θ≦90+α, 0.1127291(φ−φd)2−19.67453(φ−φd)+938.74+θd≦θ≦0.36631(φ−φd)+48.84+θd where φd=0.845σ and θd=1.065σ, in σ=α−79.25.

    摘要翻译： 反射型衍射光栅（1）的横截面为不对称三角形，其中如果¸表示闪耀角，即短边（6）和三角形形状的基部（7）之间的角度， Æ表示顶角，即短边（6）和三角形形状的长边（9）之间的角度，±表示入射光（5）相对于基部（7）的法线的角度， ，角度¸和Æ，以度计满足下列公式（6）和（7）：（6）Æ+¸‰¤90 +±; 和（7）0.1127291（Æ-Æd）2 - 19.67453（Æ - Æd）+ 938.74 +¸d‰¤¸<0.36631（Æ - Æd）+ 48.84 +¸d其中Æd = 0.845和¸d = 1.065？表示顶角的偏移和闪耀角的偏移，¡=± - 79.25表示入射光角度的变化量。

    Method of controlling laser apparatus and laser apparatus
    7.
    发明授权
    Method of controlling laser apparatus and laser apparatus 有权
    控制激光装置和激光装置的方法

    公开(公告)号：US09350133B2

    公开(公告)日：2016-05-24

    申请号：US14579698

    申请日：2014-12-22

    申请人： GIGAPHOTON INC.

    发明人： Osamu Wakabayashi ,  Hiroaki Tsushima ,  Kouji Kakizaki

    IPC分类号： H01S3/22 ,  H01S3/00 ,  H01S3/134 ,  H01S3/036 ,  H01S3/10 ,  H01S3/034 ,  H01S3/225

    CPC分类号： H01S3/0014 ,  H01S3/034 ,  H01S3/036 ,  H01S3/10069 ,  H01S3/134 ,  H01S3/225 ,  H01S3/2251 ,  H01S3/2256 ,  H01S3/2258

    摘要： A method of controlling a laser apparatus may include: exchanging a gain medium in a chamber configured to output a laser beam by exciting the gain medium; first measuring, after the exchanging, pulse energy of a laser beam which is oscillated in the chamber under a specific gas pressure and a specific charge voltage; calculating an approximate expression indicating a relationship between the pulse energy of the laser beam and the gas pressure in the chamber and the charge voltage, or a table representing a correlationship between the pulse energy, the gas pressure and the charge voltage, based on the specific pressure, the specific charge voltage and the pulse energy in the first measuring; storing the approximate expression or the table; second measuring, after the first measuring, pulse energy Er of a laser beam oscillated in the chamber; calculating pulse energy Eec which is supposed to be obtained directly after the exchanging under the gas pressure and the charge voltage in the second measuring based on the approximate expression or the table; calculating a reduction amount ΔEd of pulse energy based on the pulse energy Eec and the pulse energy Er using ΔEd=Eec−Er; and calculating a partial gas exchange amount Q for partial gas exchange in the chamber based on the reduction amount ΔEd of pulse energy.

    摘要翻译： 控制激光装置的方法可以包括：在配置成通过激励增益介质输出激光束的腔室中交换增益介质; 在交换之后，首先测量在特定气体压力和特定充电电压下在腔室中振荡的激光束的脉冲能量; 计算表示激光束的脉冲能量与腔室中的气体压力与充电电压之间的关系的近似表达式，或表示脉冲能量，气体压力和充电电压之间的相关性的表格， 压力，第一次测量中的具体充电电压和脉冲能量; 存储近似表达式或表格; 在第一次测量之后，第二次测量激光束的脉冲能量Er在腔室中振荡; 基于近似表达式或表格，计算在气体压力下的交换和第二测量中的充电电压之间直接获得的脉冲能量Eec; 使用＆Dgr; Ed = Eec-Er计算基于脉冲能量Eec和脉冲能量Er的脉冲能量的减少量＆Dgr; Ed; 并且基于脉冲能量的减少量＆Dgr; Ed计算腔室中部分气体交换的部分气体交换量Q。

    GAS LASER DEVICE
    8.
    发明申请
    GAS LASER DEVICE 有权
    气体激光器件

    公开(公告)号：US20160134075A1

    公开(公告)日：2016-05-12

    申请号：US14898341

    申请日：2013-12-27

    申请人： MITSUBISHI ELECTRIC CORPORATION

    发明人： Yoichi TANINO ,  Junichi NISHIMAE ,  Tatsuya YAMAMOTO

    IPC分类号： H01S3/038 ,  H01S3/10 ,  H01S3/034

    CPC分类号： H01S3/038 ,  H01S3/034 ,  H01S3/076 ,  H01S3/0805 ,  H01S3/0971 ,  H01S3/10007 ,  H01S3/2232 ,  H01S3/2325 ,  H01S3/2366 ,  H01S2301/02

    摘要： A gas laser device which can perform optical amplification, laser light passing through a laser gas excited by electrical discharge, including: a first and second pair of discharge electrodes arranged longitudinally along an optical axis of the laser light; at least two mirrors reflecting the laser light amplified by the gas laser, the mirrors arranged opposite to each other to interpose a first discharge region defined by the first pair of discharge electrodes and a second discharge region defined by the second pair of discharge electrodes therebetween; and a shielding member located between the first pair of discharge electrodes and the second pair of discharge electrodes, the shielding member protruding from electrode surfaces of the discharge electrodes toward the optical axis of the laser light. The configuration can efficiently suppress parasitic oscillation with a simple structure.

    摘要翻译： 一种能够执行光放大的激光装置，通过通过放电激发的激光气体的激光，包括：沿着激光的光轴纵向排列的第一和第二对放电电极; 反射由气体激光器放大的激光的至少两个反射镜，彼此相对布置的反射镜，以插入由第一对放电电极限定的第一放电区域和由第二对放电电极限定的第二放电区域; 以及位于所述第一对放电电极和所述第二对放电电极之间的屏蔽部件，所述屏蔽部件从所述放电电极的电极表面朝向所述激光的光轴突出。 该结构能够以简单的结构有效地抑制寄生振荡。

    Air-cooled gas lasers and associated systems and methods
    10.
    发明授权
    Air-cooled gas lasers and associated systems and methods 有权
    风冷气体激光器及相关系统和方法

    公开(公告)号：US09263844B2

    公开(公告)日：2016-02-16

    申请号：US14614354

    申请日：2015-02-04

    申请人： Universal Laser Systems, Inc.

    发明人： Yefim P. Sukhman ,  Stefano J. Noto ,  Christian J. Risser ,  Mikhail E. Ryskin ,  Jonathan S. Marx ,  Robert A. Hoeffer, III

    IPC分类号： H01S3/038 ,  H01S3/03 ,  H01S3/041 ,  H01S3/04 ,  H01S3/0971 ,  H01S3/223 ,  H01S3/034

    CPC分类号： H01S3/038 ,  H01S3/03 ,  H01S3/034 ,  H01S3/0404 ,  H01S3/041 ,  H01S3/0971 ,  H01S3/2232

    摘要： Embodiments of an air-cooled gas laser are disclosed herein. A laser configured in accordance with one embodiment includes a laser superstructure, an optical assembly, and an elongated thermal decoupler member having a first end portion fixedly coupled to the optical assembly and a second end portion fixedly coupled to the laser superstructure. The laser further includes an optical assembly that includes a first holder member fixedly coupled to the first end portion of the thermal decoupler, a second holder member pivotally coupled to the first holder member and fixedly coupled to the laser superstructure, and a flexible seal having a portion coupled to the laser structure and disposed at least between the first holder member and the second holder member.

    摘要翻译： 这里公开了空气冷却气体激光器的实施例。 根据一个实施例构造的激光器包括激光上部结构，光学组件以及具有固定地联接到光学组件的第一端部的细长热分离器构件和固定地联接到激光上部结构的第二端部。 激光器还包括光学组件，其包括固定地联接到热分离器的第一端部的第一保持器构件，枢转地联接到第一保持器构件并且固定地联接到激光上部结构的第二保持器构件，以及具有 耦合到所述激光结构并且至少设置在所述第一保持器构件和所述第二保持器构件之间的部分。