公开(公告)号：US20180006423A1

公开(公告)日：2018-01-04

申请号：US15543375

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 ,  H01S3/07 ,  H01S3/16 ,  H01S3/02 ,  H01S3/0941 ,  H01S3/06

CPC classification number: H01S3/10007 ,  H01S3/027 ,  H01S3/042 ,  H01S3/0604 ,  H01S3/07 ,  H01S3/092 ,  H01S3/0941 ,  H01S3/10 ,  H01S3/10092 ,  H01S3/137 ,  H01S3/1603 ,  H01S3/1643 ,  H01S2301/02

Abstract: A laser medium unit 10 in a laser beam amplification device includes a plurality of laser media 14. A cooling medium flow path F1 is provided around the laser medium unit 10 to cool the laser medium unit 10 from outside. A sealed space between the laser media 14 is filled with gas or liquid, and a laser beam for passing through the sealed space is not interfered by a cooling medium flowing outside. Therefore, a fluctuation of an amplified laser beam is prevented, and a quality such as stability and focusing characteristics of the laser beam is improved.

公开(公告)号：US20240361666A1

公开(公告)日：2024-10-31

申请号：US18681646

申请日：2022-05-16

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Takashi SEKINE ,  Yoshinori TAMAOKI

IPC: G02F1/35 ,  G02F1/39 ,  H01S3/00 ,  H01S3/23

CPC classification number: G02F1/354 ,  G02F1/392 ,  H01S3/0092 ,  H01S3/2391

Abstract: A laser amplification device includes an amplification unit and a phase adjustment unit; the amplification unit includes a signal light source, an excitation light source, and a nonlinear optical crystal; the nonlinear optical crystal has a plurality of spatially different crystal portions; the signal light source, the excitation light source, and the nonlinear optical crystal are arranged such that signal light and excitation light are simultaneously incident on the plurality of crystal portions and that the elements of at least one of a set of the angles of incidence between the crystal axes of the plurality of crystal portions and the signal light and a set of the angles of incidence between the crystal axes of the plurality of crystal portions and the excitation light are different.

公开(公告)号：US20240146033A1

公开(公告)日：2024-05-02

申请号：US18279953

申请日：2022-02-10

Applicant: HAMAMATSU PHOTONICS K.K.

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

IPC: H01S5/40 ,  H01S5/02255 ,  H01S5/024 ,  H01S5/042

CPC classification number: H01S5/4012 ,  H01S5/02255 ,  H01S5/02469 ,  H01S5/04256

Abstract: A laser device includes a support, a first heat sink, a plurality of laser light sources attached to the support, and a plurality of electrodes bridged between the plurality of laser light sources and the first heat sink. Each of the plurality of laser light sources is movable with respect to the support. Each of the plurality of electrodes is electrically connected to one of the plurality of laser light sources at a first connection portion, and is thermally connected to the first heat sink at a second connection portion. In each of the plurality of electrodes, an extension part between the first connection portion and the second connection portion has flexibility, and a length of the extension part is larger than a linear distance between the first connection portion and the second connection portion.

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：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.

公开(公告)号：US20180084982A1

公开(公告)日：2018-03-29

申请号：US15714048

申请日：2017-09-25

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Daisuke YAMASHITA ,  Yutaka YAMASHITA ,  Yukio UEDA ,  Yoshinori TAMAOKI

IPC: A61B1/07 ,  A61M25/00 ,  F21V8/00 ,  G02B6/10

Abstract: A device for radiating pulsed light toward a thrombus in a blood vessel includes a light source configured to output monitoring light to be radiated into the blood vessel, a light detector configured to detect returned light of the monitoring light and output a detection signal, and a computer configured to acquire a time waveform, which is a change in an intensity of the returned light over time, based on the detection signal, wherein the computer is configured to obtain a parameter on the basis of the time waveform and evaluates a reaction in the blood vessel according to the radiation of the pulsed light on the basis of the parameter.