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公开(公告)号：US20220337033A1
公开(公告)日：2022-10-20
申请号：US17675197
申请日：2022-02-18
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Atsushi SUGIYAMA , Tadataka EDAMURA , Naota AKIKUSA
Abstract: An external resonance-type laser module includes: a quantum cascade laser; a MEMS diffraction grating including a movable portion capable of swinging around an axis and a diffraction grating portion formed on the movable portion; and a lens. The diffraction grating portion includes a plurality of lattice grooves arranged in a first direction and each of the plurality of lattice grooves extends in a second direction perpendicular to the first direction. The MEMS diffraction grating is disposed such that a normal line of the diffraction grating portion is inclined with respect to an end surface and the first direction is along a lamination direction of a laminated structure when viewed in a direction perpendicular to the end surface. A length of the diffraction grating portion in the first direction exceeds a length of the diffraction grating portion in the second direction.
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22.发明申请公开(公告)号：US20220271504A1
公开(公告)日：2022-08-25
申请号：US17672758
申请日：2022-02-16
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Atsushi SUGIYAMA , Tadataka EDAMURA , Takahide OCHIAI , Naota AKIKUSA
Abstract: The laser module includes a QCL element, a MEMS diffraction grating, a first lens holder disposed on a side opposite to a side on which the MEMS diffraction grating is disposed with respect to the QCL element, a second lens holder disposed between the QCL element and the MEMS diffraction grating, a package, an electrode terminal disposed along an inner wall surface of the package, and a wire for electrically connecting the electrode terminal and the QCL element. An end portion of the wire on a side where the QCL element is disposed is disposed at a position between the first lens holder and the second lens holder when viewed from a direction orthogonal to a facing direction in which the first lens holder and the second lens holder face each other.
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公开(公告)号：US20220271491A1
公开(公告)日：2022-08-25
申请号：US17675166
申请日：2022-02-18
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Tadataka EDAMURA , Atsushi SUGIYAMA , Naota AKIKUSA
Abstract: An external resonance-type laser module includes: a quantum cascade laser; a MEMS diffraction grating including a movable portion capable of swinging around an axis and a diffraction grating portion formed on the movable portion; a lens; a magnet; and a yoke. The MEMS diffraction grating includes a pair of coils respectively disposed on one side and the other side with respect to the axis when viewed in a normal direction parallel to a normal line of the diffraction grating portion, and each of the pair of coils includes an inside part extending along the axis. A recess portion is formed in the magnet, and at least a part of the recess portion overlaps the inside part when viewed in the normal direction.
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公开(公告)号：US20210181518A1
公开(公告)日：2021-06-17
申请号：US17108278
申请日：2020-12-01
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Takahide OCHIAI , Naota AKIKUSA , Tatsuo DOUGAKIUCHI , Tadataka EDAMURA
Abstract: A light source module includes a light source; an optical fiber configured to guide light output from the light source; a pair of holding members configured to hold both ends of a first portion of the optical fiber such that the first portion extends linearly; a first vibrator configured to vibrate the first portion along a first direction intersecting an extending direction of the first portion; and a second vibrator configured to vibrate the first portion along a second direction intersecting the extending direction and differing from the first direction.
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25.发明申请公开(公告)号：US20190265396A1
公开(公告)日：2019-08-29
申请号：US16285426
申请日：2019-02-26
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Tadataka EDAMURA , Atsushi SUGIYAMA , Tatsuo DOUGAKIUCHI
IPC: G02B5/18
Abstract: A movable diffraction grating includes; a supporting portion; a movable portion which includes a first surface and is swingably connected with the supporting portion; a resin layer which is provided on the first surface and includes a diffraction grating pattern formed therein; a reflection layer which is provided on the resin layer an along the diffraction grating pattern and is formed of metal; and a stress regulation portion inducing stress on the movable portion, and the first surface is caused to bend concavely by stress.
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Patent Agency Ranking
公开(公告)号：US20170309850A1
公开(公告)日：2017-10-26
申请号：US15489776
申请日：2017-04-18
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Shigeo HARA , Wataru AKAHORI , Takahiko YAMANAKA , Tadataka EDAMURA
CPC classification number: H01L51/4273 , H01L51/0007 , H01L51/0036 , H01L51/0043 , H01L51/0047 , H01L51/4293 , Y02E10/549 , Y02P70/521
Abstract: Organic photoelectric conversion element has a first electrode, a photoelectric conversion layer, and a second electrode. The photoelectric conversion layer has a first organic layer that contains a first organic semiconductor containing principally a p-type organic semiconductor, a second organic layer that contains a second organic semiconductor containing principally an n-type organic semiconductor, and an intermediate layer that contains the first organic semiconductor and the second organic semiconductor. The second organic layer is disposed at a side of the second electrode relative to the first organic layer. The intermediate layer is between the first organic layer and the second organic layer and reaches each of these layers. The thickness of the second organic layer is greater than the sum of the thicknesses of the first organic layer and intermediate layer.
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公开(公告)号：US20170063044A1
公开(公告)日：2017-03-02
申请号：US15251119
申请日：2016-08-30
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Tatsuo DOUGAKIUCHI , Kazuue FUJITA , Akio ITO , Tadataka EDAMURA
CPC classification number: H01S5/3402 , H01S5/0267 , H01S5/0604 , H01S5/1028 , H01S5/1096 , H01S5/1221 , H01S5/124 , H01S5/141 , H01S5/18 , H01S5/2018 , H01S2302/02
Abstract: A quantum cascade laser is configured with a semiconductor substrate, and an active layer provided on a first surface of the substrate and having a multistage lamination of unit laminate structures each of which includes an emission layer and an injection layer. The active layer is configured to be capable of generating first pump light of a frequency ω1 and second pump light of a frequency ω2, and to generate output light of a difference frequency ω by difference frequency generation. An external diffraction grating is provided constituting an external cavity for generating the first pump light and configured to be capable of changing the frequency ω1, outside an element structure portion including the active layer. Grooves respectively formed in a direction intersecting with a resonating direction are provided on a second surface of the substrate.
Abstract translation: 量子级联激光器被配置为具有半导体衬底和设置在衬底的第一表面上的有源层，并且具有包括发射层和注入层的单元层叠结构的多级叠层。 有源层被配置为能够产生频率ω1的第一泵浦光和频率ω2的第二泵浦光，并且通过差频产生产生差频ω的输出光。 提供外部衍射光栅，其构成用于产生第一泵浦光的外部空腔，并且被配置为能够在包括有源层的元件结构部分外部改变频率ω1。 分别在与谐振方向相交的方向上形成的槽设置在基板的第二表面上。
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公开(公告)号：US20130322480A1
公开(公告)日：2013-12-05
申请号：US13909672
申请日：2013-06-04
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Tadataka EDAMURA , Atsushi SUGIYAMA , Naota AKIKUSA
IPC: H01S5/34
CPC classification number: H01S5/3401 , B82Y20/00 , H01S5/0071 , H01S5/028 , H01S5/0282 , H01S5/0287 , H01S5/12 , H01S5/141 , H01S5/3402
Abstract: A quantum cascade laser includes a semiconductor substrate, and an active layer that is provided on the substrate, and has a cascade structure in which emission layers and injection layers are alternately laminated by multistage-laminating unit laminate structures each consisting of the quantum well emission layer and the injection layer, and generates light by intersubband transition in a quantum well structure. Further, in a laser cavity structure for light with a predetermined wavelength to be generated in the active layer, CeO2 insulating films and reflection control films are formed in order on respective faces of a first end face and a second end face facing each other. Thereby, it is possible to realize a quantum cascade laser capable of preferably realizing reflectance control for light within a mid-infrared region on the laser device end face.
Abstract translation: 量子级联激光器包括半导体衬底和设置在衬底上的有源层，并且具有级联结构，其中发射层和注入层通过多级层压单元层叠结构交替层叠，每个层叠结构由量子阱发射层 和注入层，并通过量子阱结构中的子带间跃迁产生光。 此外，在有源层中产生具有预定波长的光的激光腔结构中，依次在彼此面对的第一端面和第二端面的相应面上依次形成CeO 2绝缘膜和反射控制膜。 由此，能够实现能够优选实现激光装置端面的中红外区域内的光的反射率控制的量子级联激光器。
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公开(公告)号：US20230307562A1
公开(公告)日：2023-09-28
申请号：US18023418
申请日：2021-05-26
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Tatsuo DOUGAKIUCHI , Akio ITO , Masahiro HITAKA , Tadataka EDAMURA
IPC: H01L31/0352 , G01J3/45 , G01J3/457 , G01J3/10 , H01L23/482 , H01L31/02 , H01L31/0232 , H01L31/0304
CPC classification number: H01L31/035236 , G01J3/45 , G01J3/457 , G01J3/10 , H01L23/4821 , H01L31/02005 , H01L31/02325 , H01L31/035281 , H01L31/03046 , G01J2003/102
Abstract: A photodetector includes: a semiconductor substrate; a mesa portion formed on a major surface of the semiconductor substrate to extend along an optical waveguide direction; a first contact layer; a second contact layer; a first electrode; and an air bridge wiring electrically connected to the first contact layer and the first electrode. When viewed in a direction perpendicular to the major surface of the semiconductor substrate, a length of the mesa portion in the optical waveguide direction is longer than a length of the mesa portion in a direction perpendicular to the optical waveguide direction. The air bridge wiring is led out from the first contact layer to one side in the direction perpendicular to the optical waveguide direction, and is bridged between the first contact layer and the first electrode.
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公开(公告)号：US20230198224A1
公开(公告)日：2023-06-22
申请号：US17925089
申请日：2021-05-27
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Yoshitaka KUROSAKA , Kazuyoshi HIROSE , Yuu TAKIGUCHI , Akio ITO , Tadataka EDAMURA , Takahiko YAMANAKA , Shigeo HARA
CPC classification number: H01S5/026 , H01S5/34313 , H01S5/34353 , H01S5/11 , H01S5/04254 , H01S5/423 , H01S5/18308 , H01S2304/04
Abstract: An optical device of one embodiment outputs light in a short-wavelength range such as a visible range. The optical device includes a UC layer, first and second light-confinement layers, and a resonance mode forming layer. The UC layer contains an upconversion material receiving excitation light in a first wavelength range and outputting light in a second wavelength range. The first light-confinement layer has a characteristic of reflecting part of the second wavelength-range light. The second light-confinement layer has a characteristic of reflecting part of the second wavelength-range light and transmitting the remainder, and is disposed such that the UC layer locates between the first and second light-confinement layers. The resonance mode forming layer locates between the UC layer and the first or second light-confinement layer, includes a base layer and plural modified refractive index regions, and forms a resonance mode of the second wavelength-range light.
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