公开(公告)号：US20240106182A1

公开(公告)日：2024-03-28

申请号：US18275680

申请日：2022-02-03

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Yuki MURAMATSU ,  Takashi SEKINE ,  Yuma HATANO ,  Yoshinori TAMAOKI ,  Masateru KURATA

IPC: H01S3/02 ,  H01S3/04 ,  H01S3/06 ,  H01S3/07

CPC classification number: H01S3/025 ,  H01S3/0404 ,  H01S3/0604 ,  H01S3/07 ,  H01S3/1643

Abstract: Disclosed is a laser medium unit that includes a laser medium and a holding body. The laser medium has a pair of end surfaces. The holding body surrounds the laser medium when viewed form a direction intersecting with the pair of end surfaces and holds the laser medium. The holding body includes a deformation allowing portion that extends from the inside to the outside of the holding body when viewed from the direction intersecting with the pair of end surfaces. The laser medium and the holding body are in contact with each other. A contact region of the holding body with the laser medium has a width in the direction intersecting with the pair of end surfaces and extends along a side surface of the laser medium when viewed from the direction intersecting with the pair of end surfaces.

公开(公告)号：US20230291165A1

公开(公告)日：2023-09-14

申请号：US18015428

申请日：2021-07-28

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Yoshinori TAMAOKI ,  Takashi SEKINE ,  Yuki MURAMATSU ,  Yuma HATANO ,  Yasuki TAKEUCHI

IPC: H01S3/02 ,  H01S3/04 ,  H01S3/042 ,  H01S3/16

CPC classification number: H01S3/027 ,  H01S3/0405 ,  H01S3/042 ,  H01S3/1618 ,  H01S3/1643

Abstract: A laser device includes a vacuum container including a wall portion, a laser medium disposed inside the vacuum container, a cooler disposed outside the vacuum container, and a heat conductor penetrating the wall portion in a predetermined direction and connected to the laser medium and the cooler.

公开(公告)号：US20230261430A1

公开(公告)日：2023-08-17

申请号：US17920847

申请日：2021-01-15

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Takashi SEKINE ,  Yuma HATANO ,  Yuki MURAMATSU ,  Yasuki TAKEUCHI ,  Yoshinori TAMAOKI

IPC: H01S3/0941 ,  H01S3/094

CPC classification number: H01S3/09415 ,  H01S3/094049

Abstract: An optical amplification device includes: a laser medium that amplifies input light to generate output light; an excitation light source that supplies excitation light used for amplifying the input light, to the laser medium; a resonator that includes a pair of first optical elements and disposed to optically face each other with the laser medium interposed between the first optical elements and that resonates generated light generated in the laser medium through the supply of the excitation light; and an optical switch disposed on an optical path of the resonator between the pair of first optical elements.

公开(公告)号：US20190356105A1

公开(公告)日：2019-11-21

申请号：US16484302

申请日：2018-02-05

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Kenichi UEDA ,  Koichi IYAMA ,  Yoshinori KATO ,  Takashi SEKINE ,  Toshiyuki KAWASHIMA

IPC: H01S3/042 ,  H01S3/06 ,  H01S3/08

Abstract: A laser medium unit includes: a plate-shaped laser gain medium which includes a first surface and a second surface opposite to the first surface and generates emission light by the irradiation of excitation light from the first surface; a reflection member that is provided on the second surface so as to reflect the excitation light and the emission light; and a cooling member that cools the laser gain medium. The laser gain medium includes an irradiation area which is irradiated with the excitation light and an outer area which is located outside the irradiation area when viewed from a thickness direction intersecting the first surface and the second surface. The cooling member is thermally connected to the second surface through the reflection member so that a cooling area of the laser gain medium is formed on the second surface.

公开(公告)号：US20180278007A1

公开(公告)日：2018-09-27

申请号：US15544613

申请日：2016-01-13

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Takashi SEKINE ,  Yoshinori KATO ,  Yoshinori TAMAOKI ,  Takashi KURITA ,  Toshiyuki KAWASHIMA ,  Takaaki MORITA

IPC: H01S3/042 ,  H01S3/06 ,  H01S3/07 ,  H01S3/02 ,  H01S3/16 ,  H01S3/04 ,  H01S3/093

CPC classification number: H01S3/042 ,  H01S3/025 ,  H01S3/0407 ,  H01S3/06 ,  H01S3/0604 ,  H01S3/0608 ,  H01S3/0623 ,  H01S3/07 ,  H01S3/091 ,  H01S3/093 ,  H01S3/10 ,  H01S3/1611 ,  H01S3/1643

Abstract: A plate-like laser medium has a through-hole for providing a flow of a cooling medium. The laser medium unit includes the plurality of laser media. A laser beam amplification device includes a laser medium unit 10, an excitation light source 21 that causes excitation light to enter the laser medium unit 10, a through-hole 16a of a window member as a unit for supplying the cooling medium in a through-hole 14a of the laser medium 14, and a cooling medium flow path F1 arranged around the laser medium unit 10.