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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
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.
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公开(公告)号：US20240418575A1
公开(公告)日：2024-12-19
申请号：US18706789
申请日：2022-07-15
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Kazuki KAWAI , Satoru KOBAYASHI , Yoshinori KATO , Takashi SEKINE , Takaaki MORITA , Yuki IKEYA , Takuto IGUCHI
IPC: G01J9/00
Abstract: A wavefront measurement device includes: a phase modulation unit having a spatial light modulator on which incident light is incident; a pattern generation unit configured to generate a phase pattern to be inputted to the spatial light modulator; an imaging unit having an imaging region for imaging an image of a portion of the incident light modulated by the spatial light modulator as measurement light; and an analysis unit configured to analyze a wavefront of the incident light based on an imaging result by the imaging unit, in which the pattern generation unit generates a plurality of phase patterns for which a measurement virtual pattern is shifted to positions different from each other such that a focused spot of the measurement light modulated by the spatial light modulator shifts over time to different positions in the imaging region.
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公开(公告)号：US20210313769A1
公开(公告)日：2021-10-07
申请号：US17265983
申请日：2019-05-31
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Yujin ZHENG , Takashi SEKINE , Yoshinori KATO , Norio KURITA , Toshiyuki KAWASHIMA
Abstract: An external resonator-type semiconductor laser device 1A includes an external resonator formed of one or a plurality of laser diode light sources and a VBG; an optical fiber which outputs output light La from the laser diode light source toward the VBG, and into which return light Lb from the VBG is input; and a displacement unit that displaces a disposition position of the VBG with respect to an input and output end surface of the optical fiber.
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公开(公告)号：US20190372299A1
公开(公告)日：2019-12-05
申请号：US16423387
申请日：2019-05-28
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Yuki KABEYA , Takashi SEKINE , Yoshinori KATO
Abstract: A laser device includes a laser medium for amplifying seed light, a first optical system for outputting excitation light for exciting the laser medium and causing the excitation light to be incident on the laser medium and input to an excitation region of the laser medium, and a second optical system for causing the seed light of first polarization to be incident on the laser medium at an incidence angle larger than 0° with respect to the laser medium and input to the excitation region.
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公开(公告)号：US20170341990A1
公开(公告)日：2017-11-30
申请号：US15528828
申请日：2015-08-10
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Osamu KOMEDA , Takuya KONDO , Toshiyuki KAWASHIMA , Hirofumi KAN , Nakahiro SATOH , Takashi SEKINE , Takashi KURITA , Atsushi SUNAHARA , Tomoyoshi MOTOHIRO , Tatsumi HIOKI , Hirozumi AZUMA , Shigeki OHSHIMA , Tsutomu KAJINO , Yoneyoshi KITAGAWA , Yoshitaka MORI , Katsuhiro ISHII , Ryohei HANAYAMA , Yasuhiko NISHIMURA , Eisuke MIURA
CPC classification number: C04B41/0045 , B23K26/38 , B23K26/402 , B23K2103/52 , C01P2002/90 , C04B35/48 , C04B41/0036 , C04B41/009 , C04B41/80 , C04B2111/0025 , C04B2235/3248 , C30B13/24 , C30B29/16
Abstract: A problem to be solved is to provide a method for processing zirconia without producing a monoclinic crystal. The solution is a method for processing zirconia, including the step of irradiating the zirconia with a laser with a pulse duration of 10−12 seconds to 10−15 seconds at an intensity of 1013 to 1015 W/cm2.
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Patent Agency Ranking
公开(公告)号：US20250007231A1
公开(公告)日：2025-01-02
申请号：US18709591
申请日：2022-09-14
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Takaaki MORITA , Takashi SEKINE , Yoshinori KATO , Takuto IGUCHI
Abstract: A laser medium unit includes a laser gain medium that is formed in a plate shape, that has a first surface and a second surface, and that generates emission light upon irradiation with excitation light from the first surface; and a light guiding and cooling member connected to the first surface to guide the excitation light toward the first surface and to cool the laser gain medium. The first surface consists of a first region to which the light guiding and cooling member is thermally connected, and a second region other than the first region. An entirety of the second region is thermally isolated from the light guiding and cooling member.
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公开(公告)号：US20170330636A1
公开(公告)日：2017-11-16
申请号：US15527373
申请日：2015-11-18
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Takashi SEKINE , Yoshinori KATO , Yasuki TAKEUCHI , Toshiyuki KAWASHIMA
Abstract: The laser amplification apparatus is provided with a plurality of plate-shaped laser medium components (M1 to M4) which are disposed to be aligned along a thickness direction, and prisms (P1 to P3) which optically couples the laser medium components. Each of the laser medium components is provided with a main surface to which a seed light is incident, and a side surface which surrounds the main surface. An excitation light is incident from at least one side surface of a specific laser medium component among the plurality of laser medium components. The excitation light is incident through the prism to a side surface of the laser medium component adjacent to the prism.
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公开(公告)号：US20160370593A1
公开(公告)日：2016-12-22
申请号：US14900288
申请日：2014-05-23
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Takashi SEKINE , Toshiyuki KAWASHIMA , Yasuki TAKEUCHI , Yuma HATANO
CPC classification number: G02B27/12 , G02B5/04 , G02B19/0057 , G02B27/0905 , G02B27/0922 , G02B27/106 , G02B27/1066 , H01S5/005 , H01S5/4012 , H01S5/4025 , H01S5/405
Abstract: Provided is a laser device including N semiconductor laser array stacks, a prismatic optical system that shifts optical axes of luminous fluxes respectively output from the N semiconductor laser array stacks so as to decrease intervals among the luminous fluxes, and an imaging optical system that causes the luminous fluxes to be condensed and deflected for each luminous flux. The imaging optical system causes the luminous fluxes to be deflected so that the luminous fluxes overlap each other at a predetermined position and generates a light-condensing point of the luminous fluxes between the imaging optical system and the predetermined position.
Abstract translation: 提供了包括N个半导体激光器阵列堆叠的激光装置，分别从N个半导体激光器阵列堆叠输出的光束的光轴移动以减小光束之间的间隔的棱镜光学系统，以及使得 每个光通量的光通量被冷凝和偏转。 成像光学系统导致光束偏转，使得光束在预定位置彼此重叠，并且在成像光学系统和预定位置之间产生光通量的聚光点。
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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
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.
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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.
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