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    Laser medium unit, laser amplifier and laser oscillator and cooling method
    4.
    发明专利
    Laser medium unit, laser amplifier and laser oscillator and cooling method 有权
    激光介质单元，激光放大器和激光振荡器和冷却方法

    公开(公告)号：JP2014022568A

    公开(公告)日：2014-02-03

    申请号：JP2012159875

    申请日：2012-07-18

    Applicant: Osaka Univ ,  国立大学法人大阪大学 ,  Hamamatsu Photonics Kk ,  浜松ホトニクス株式会社

    Inventor： IYAMA KOICHI ,  KAWASHIMA TOSHIYUKI ,  KATO YOSHINORI ,  TAMAOKI YOSHIAKI ,  MIYANAGA NORIAKI ,  FUJITA HISANORI

    IPC: H01S3/042

    Abstract: PROBLEM TO BE SOLVED: To provide a laser medium unit capable of more reducing the influence of heating of a laser gain medium, and to provide a laser amplifier and a laser oscillator including the same, and a cooling method.SOLUTION: A laser medium unit 10A according to one embodiment includes a laser medium 16 produced by bonding at least one laser gain medium 22 to a first surface 20a and a second surface 20b of an optical medium 20, and a container for housing the laser medium and having a cooling medium flow path through which a cooling medium C for cooling the laser gain medium flows. The cooling medium flow path has a supply flow path 34 for supplying the cooling medium to an arrangement space 28 of the laser medium, and a discharge flow path 30 for discharging the cooling medium from the arrangement space. A medium outlet 40 of the supply flow path is provided for each laser gain medium, and the medium outlets are arranged so that the cooling medium flows from a high intensity region 44a to a low intensity region 44b of intensity distribution in an irradiation region 44 of exciting light L1 for the laser gain medium.

    Abstract translation: 要解决的问题：提供一种能够更加减少激光增益介质的加热影响的激光介质单元，并且提供一种激光放大器和包括该激光放大器的激光振荡器和冷却方法。解决方案：激光介质单元 根据一个实施例的图10A包括通过将至少一个激光增益介质22接合到光学介质20的第一表面20a和第二表面20b而产生的激光介质16，以及用于容纳激光介质并具有冷却介质流的容器 用于冷却激光增益介质的冷却介质C流过的路径。 冷却介质流路具有用于将冷却介质供给到激光介质的配置空间28的供给流路34，以及用于从配置空间排出冷却介质的排出流路30。 为每个激光增益介质提供供应流路的介质出口40，并且介质出口被布置成使得冷却介质从高强度区域44a流向强度分布的低强度区域44b， 用于激光增益介质的激光L1。

    Thrombus removal device
    5.
    发明专利
    Thrombus removal device 有权
    THROMBUS移除装置

    公开(公告)号：JP2014004219A

    公开(公告)日：2014-01-16

    申请号：JP2012142999

    申请日：2012-06-26

    Applicant: Hamamatsu Photonics Kk ,  浜松ホトニクス株式会社

    Inventor： TAMAOKI YOSHIAKI ,  KATO YOSHINORI ,  KAWASHIMA TOSHIYUKI

    IPC: A61B18/20

    Abstract: PROBLEM TO BE SOLVED: To provide a thrombus removal device, capable of detecting breakage of an optical fiber with high accuracy.SOLUTION: A thrombus removal device 1 is a device which radiates light to thrombus in a blood vessel to thereby remove the thrombus. The thrombus removal device 1 includes: a light source 11; a polarization beam splitter 12, a λ/4 plate 13; a photo detector 14; an optical fiber 15; a connector 16; an optical fiber 17; a catheter 18; and a window member 19. A reflection reducing film is formed on the end face of a second end 17b of the optical fiber 17. A reflection reducing film for reducing reflection of light when the blood contacts is formed on a second face 19b of the window member 19. The reflectance Ra in the first face 19a of the window member 19 and the reflectance Rb in the second face 19b of the window member 19 when the gas contacts the second face 19b of the window member 19 are respectively set to predetermined values.

    Abstract translation: 要解决的问题：提供一种能够以高精度检测光纤的断裂的血栓消除装置。解决方案：血栓去除装置1是将光照射到血管中的血栓，从而去除血栓的装置。 血栓去除装置1包括：光源11; 偏振分束器12，λ/ 4板13; 光检测器14; 光纤15; 连接器16; 光纤17; 导管18; 和窗构件19.在光纤17的第二端17b的端面上形成反射降低膜。当在窗口的第二面19b上形成血液接触时减少光的反射的反射减少膜 窗构件19的第一面19a中的反射率Ra和窗构件19的第二面19b中的反射率Rb分别设定为预定值。

    Solid-state laser apparatus, and method for improving beam quality
    8.
    发明专利
    Solid-state laser apparatus, and method for improving beam quality 审中-公开
    固体激光装置，以及改善光束质量的方法

    公开(公告)号：JP2004221410A

    公开(公告)日：2004-08-05

    申请号：JP2003008529

    申请日：2003-01-16

    Applicant: Hamamatsu Photonics Kk ,  浜松ホトニクス株式会社

    Inventor： O YU ,  NISHIHATA MINORU ,  IYAMA KOICHI ,  SUZUKI YASUO ,  KATO YOSHINORI ,  HIRANO ISUKE ,  SUGA HIROBUMI

    IPC: H01S3/094

    Abstract: PROBLEM TO BE SOLVED: To provide a solid-state laser apparatus wherein laser beam quality is satisfactorily prevented from degradation, and to provide a method for implementing beam quality improvement. SOLUTION: In this solid-state laser apparatus 1, a rod 2 is excited by exciting lights from LD bars 7 for the generation of a laser light in the rod 2, and the light is resonated in a resonator before it is radiated outward. The apparatus 1 comprises a plurality of optical systems 8 each collecting the light emitted by an LD bar 7 and reflected by the rod 2, an optical output measuring means 19 for measuring the lights collected by the optical systems 8, a current feeding means for feeding driving currents to the LD bars 7, a first calculating means 17 for determining the variates ΔP of the plurality of optical outputs from a reference optical output as measured by the optical output measuring means 19, a second calculating means 18 for determining the current variates ΔI based on correspondence between the variates ΔP and the current variates ΔI that zero the variates ΔP, and a controller 16 for controlling the current feeding means for the driving currents to be fed to the LD bars 7 to vary by the thus-determined current variates ΔI. COPYRIGHT: (C)2004,JPO&NCIPI

    Abstract translation: 要解决的问题：提供一种可令人满意地防止激光束质量劣化的固体激光装置，并提供实现光束质量改进的方法。 解决方案：在该固体激光装置1中，通过来自LD棒7的激光的激光激发杆2，以在棒2中产生激光，并且在辐射之前谐振器中的光被谐振 向外。 装置1包括多个光学系统8，每个光学系统8收集由LD条7发射并由杆2反射的光，用于测量由光学系统8收集的光的光学输出测量装置19，用于馈送的电流馈送装置 驱动电流到LD条7，第一计算装置17，用于根据由光输出测量装置19测量的参考光输出确定多个光输出的变化量ΔP;第二计算装置18，用于确定电流变量ΔI 基于变化量ΔP与使变量ΔP为零的电流变量ΔI之间的对应关系，以及用于控制供给到LD条7的驱动电流的电流馈送装置的控制器16，以变化如此确定的电流变化量ΔI 。 版权所有（C）2004，JPO＆NCIPI

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