公开(公告)号：US10374377B2

公开(公告)日：2019-08-06

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: H01S3/04 ,  H01S3/042 ,  H01S3/07 ,  H01S3/10 ,  H01S3/06 ,  H01S3/02 ,  H01S3/093 ,  H01S3/16 ,  H01S3/091

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：US10772490B2

公开(公告)日：2020-09-15

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 ,  A61B5/00 ,  A61B5/026 ,  G02B6/24 ,  A61B18/24 ,  F21V8/00 ,  G02B6/10 ,  A61B18/00 ,  A61N5/06 ,  A61B18/26

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.

公开(公告)号：US10063026B2

公开(公告)日：2018-08-28

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: H01S3/04 ,  H01S3/10 ,  H01S3/042 ,  H01S3/16 ,  H01S3/06 ,  H01S3/0941 ,  H01S3/07 ,  H01S3/02 ,  H01S3/137 ,  H01S3/092

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.