公开(公告)号：US20230030197A1

公开(公告)日：2023-02-02

申请号：US17888623

申请日：2022-08-16

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Tatsuo DOUGAKIUCHI ,  Akio ITO ,  Masahiro HITAKA ,  Tadataka EDAMURA ,  Naota AKIKUSA

IPC: G01N21/39 ,  H01S5/40 ,  H01S5/34 ,  G01J3/427

Abstract: A beating spectroscopy device includes: first and second quantum cascade lasers; a quantum cascade detector; and a sample holder configured to hold a sample on an optical path between the second quantum cascade laser and the quantum cascade detector. Lights from the first and second quantum cascade lasers are detected by the quantum cascade detector while a wavelength of the light from the second quantum cascade laser is changed to scan a frequency of a beating signal having a frequency in accordance with a wavelength difference between the lights from the first and second quantum cascade lasers.

公开(公告)号：US20220181851A1

公开(公告)日：2022-06-09

申请号：US17439884

申请日：2020-01-14

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Tatsuo DOUGAKIUCHI ,  Yoichi KAWADA

IPC: H01S5/14 ,  H01S5/02325

Abstract: An optical kit includes a base including a main surface; and a holding unit provided on the main surface to hold an optical system. The holding unit includes a lens holding unit that holds a lens, a reflector holding unit that holds a corner reflector, a first aperture member holding unit that holds a first aperture member, a second aperture member holding unit that holds a second aperture member, and a third aperture member holding unit that holds a third aperture member. The reflector holding unit includes a first mechanism that holds an entirety of the corner reflector so as to be rotatable along the main surface, and a second mechanism configured to adjust an optical axis of a diffracted light in each of a reflective diffraction grating and a mirror.

公开(公告)号：US20190326466A1

公开(公告)日：2019-10-24

申请号：US16386604

申请日：2019-04-17

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Masahiro HITAKA ,  Akio ITO ,  Tatsuo DOUGAKIUCHI ,  Kazuue FUJITA ,  Tadataka EDAMURA

IPC: H01L31/173 ,  H01S5/34 ,  H01L31/0352 ,  H01L31/0224 ,  H01S5/02 ,  H01S5/22 ,  H01S5/026 ,  H01S5/042 ,  H01S5/343 ,  H01L31/0304 ,  H01L31/18 ,  G01N21/25

Abstract: An optical semiconductor element includes a semiconductor substrate, a first laminated structure provided on a front surface of the semiconductor substrate, and a second laminated structure provided on the front surface of the semiconductor substrate, the first laminated structure includes a first quantum cascade region, the second laminated structure includes a dummy region having the same layer structure as the first quantum cascade region, a second quantum cascade region provided on the front surface of the semiconductor substrate via the dummy region, and one of the first quantum cascade region and the second quantum cascade region is a quantum cascade laser, and the other of the first quantum cascade region and the second quantum cascade region is a quantum cascade detector.

公开(公告)号：US20250002836A1

公开(公告)日：2025-01-02

申请号：US18739573

申请日：2024-06-11

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Tokio TAKAGI ,  Toyohiko YAMAUCHI ,  Tatsuo DOUGAKIUCHI ,  Yoichi KAWADA ,  Yoshiyuki SHIMIZU ,  Gen TAKEBE

IPC: C12M1/34 ,  C12M1/00 ,  G01N1/30 ,  G01N21/25

Abstract: A cell sample evaluation apparatus includes an evaluation light irradiation unit for irradiating an irradiation region set in a culture region of a plurality of cells in an object cell sample with evaluation light having a wavelength in a mid-infrared region under a predetermined irradiation condition, a dead cell number measurement unit for measuring a dead cell number generated according to an irradiation amount of the evaluation light in the irradiation region of the object cell sample, and a culture state analysis unit for evaluating a culture state of the object cell sample by obtaining an object correlation between the irradiation amount of the evaluation light and the dead cell number for the object cell sample and comparing a reference correlation between the irradiation amount of the evaluation light and the dead cell number for a reference cell sample and the object correlation.

公开(公告)号：US20230369823A1

公开(公告)日：2023-11-16

申请号：US18025723

申请日：2021-08-19

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Naota AKIKUSA ,  Tatsuo DOUGAKIUCHI

IPC: H01S5/02325 ,  H01S5/02257 ,  H01S5/02253 ,  H01S5/024 ,  H01S5/34

CPC classification number: H01S5/02325 ,  H01S5/02257 ,  H01S5/02253 ,  H01S5/02407 ,  H01S5/3402

Abstract: A QCL module according to an embodiment includes a package accommodating a QCL element and provided with a window material for extracting a laser beam emitted from the QCL element to the outside, a lens hold member for holding a lens on which the laser beam output from the window material is incident, a cooling fan for cooling the package, and a base for holding the package, the lens hold member, and the cooling fan. The package and the lens hold member are fastened together to the base by a common screw member.

公开(公告)号：US20230369822A1

公开(公告)日：2023-11-16

申请号：US18025972

申请日：2021-06-17

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Tatsuo DOUGAKIUCHI

IPC: H01S5/023 ,  H01S5/14 ,  H01S5/02253 ,  H01S5/02255 ,  H01S5/024

CPC classification number: H01S5/023 ,  H01S5/02253 ,  H01S5/02255 ,  H01S5/02415 ,  H01S5/141 ,  H01S5/3402

Abstract: Disclosed is an optical kit for forming an optical system including an external resonator of a laser light source that outputs laser light, the optical kit including: a base including a main surface; a light source holding part provided on the main surface for holding the laser light source; and a holding part provided on the main surface for holding the optical system, wherein the holding part has a reflector holding part for holding the corner reflector, a first opening member holding part for holding the first opening member, and a second opening member holding part for holding the second opening member, and wherein the first opening member holding part is positioned closer to the reflector holding part than an emission surface of the laser light of the laser light source held by the light source holding part.

公开(公告)号：US20230253755A1

公开(公告)日：2023-08-10

申请号：US18103656

申请日：2023-01-31

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Tatsuo DOUGAKIUCHI ,  Akio ITO ,  Kazuue FUJITA

IPC: H01S5/02325 ,  H01S5/34 ,  H01S5/12 ,  H01S5/02253 ,  H01S5/02216 ,  H01S5/06 ,  H01S5/14 ,  H01S3/1055 ,  H01S5/02315

CPC classification number: H01S5/02325 ,  H01S5/3402 ,  H01S5/12 ,  H01S5/02253 ,  H01S5/02216 ,  H01S5/0607 ,  H01S5/141 ,  H01S3/1055 ,  H01S5/02315 ,  H01S2302/02

Abstract: The laser module includes a QCL element, a diffraction grating unit including a movable diffraction grating, a first lens that transmits light emitted from an end surface of the QCL element and light returning from the movable diffraction grating to the QCL element, a second lens that transmits terahertz waves emitted from the QCL element, a first holder, and a package. The first holder has a support surface on which the QCL element is mounted and a side surface connected to the support surface and facing the first lens in a resonance direction. A distance from an intersection point between the side surface and the support surface to the end surface along the resonance direction is smaller than a distance between the intersection point and the first lens along the resonance direction.

公开(公告)号：US20190074664A1

公开(公告)日：2019-03-07

申请号：US16121825

申请日：2018-09-05

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Akio ITO ,  Kazuue FUJITA ,  Daisuke KAWAGUCHI ,  Tatsuo DOUGAKIUCHI ,  Tadataka EDAMURA

IPC: H01S5/34 ,  H01S5/22 ,  H01S5/028

CPC classification number: H01S5/3402 ,  H01S5/0201 ,  H01S5/021 ,  H01S5/0216 ,  H01S5/0217 ,  H01S5/0224 ,  H01S5/028 ,  H01S5/0604 ,  H01S5/1096 ,  H01S5/12 ,  H01S5/22 ,  H01S5/2224 ,  H01S5/2275 ,  H01S2301/176 ,  H01S2302/02

Abstract: A method of manufacturing a quantum cascade laser beam source (1) includes: preparing a semiconductor stacked body (20); forming a pair of first excavated portions (41 and 42) and a ridge portion which is interposed between the pair of first excavated portions (41 and 42); forming channel structures (51 and 52) and circumferential edge portions (61 and 62) which are formed to interpose the channel structures (51 and 52) between the ridge portion (30) and the circumferential edge portion; forming an electrode pattern (81) in contact with a first area (29a) and forming an electrode pattern (82) in contact with a second area (22a); fixing a crystal growth surface side to a support substrate (91); removing an Fe-doped (semi-insulating) InP single-crystal substrate (21); fixing a Si substrate (93); and peeling the support substrate (91).

公开(公告)号：US20170243994A1

公开(公告)日：2017-08-24

申请号：US15423836

申请日：2017-02-03

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Tatsuo DOUGAKIUCHI ,  Akio ITO ,  Tadataka EDAMURA ,  Kazuue FUJITA

IPC: H01L31/0352 ,  H01L31/0304 ,  H01L31/109 ,  H01L31/0216 ,  G01N21/3504 ,  H01L31/0232

CPC classification number: H01L31/035236 ,  G01N21/3504 ,  G01N2201/068 ,  G01N2201/0873 ,  H01L31/02161 ,  H01L31/02327 ,  H01L31/03042 ,  H01L31/03046 ,  H01L31/035281 ,  H01L31/109

Abstract: A quantum cascade detector includes a semiconductor substrate; an active layer having a cascade structure; a lower cladding layer provided between the active layer and the substrate and having a lower refractive index than the active layer; a lower metal layer provided between the lower cladding layer and the substrate; an upper cladding layer provided on an opposite side to the substrate with respect to the active layer and having a lower refractive index than the active layer; and an upper metal layer provided on an opposite side to the active layer with respect to the upper cladding layer. A first end face being in a waveguide direction in a waveguide structure with the active layer, lower cladding layer, and upper cladding layer is an entrance surface for light to be detected.

公开(公告)号：US20150123076A1

公开(公告)日：2015-05-07

申请号：US14525415

申请日：2014-10-28

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Kazuue FUJITA ,  Toru HIROHATA ,  Tadataka EDAMURA ,  Tatsuo DOUGAKIUCHI

IPC: H01L31/0352

CPC classification number: H01L31/035236 ,  H01L31/06875 ,  H01L31/09 ,  H01L31/105

Abstract: A quantum cascade detector includes a semiconductor substrate, and an active layer formed by laminating unit laminate structures each having an absorption region with a first barrier layer to a second well layer and a transport region with a third barrier layer to an n-th well layer. A second absorption well layer has a layer thickness ½ or less of that of a first absorption well layer thickest in one period, and a coupling barrier layer has a layer thickness smaller than that of an exit barrier layer thickest in one period. The unit laminate structure has a detection lower level arising from a ground level in the first well layer, a detection upper level generated by coupling an excitation level in the first well layer and a ground level in the second well layer, and a transport level structure for electrons.

Abstract translation: 量子级联检测器包括半导体衬底和通过层叠单元层压结构形成的有源层，每个层叠结构具有带有第一阻挡层的吸收区域到第二阱层以及具有第三阻挡层到第n阱层的传输区域 。 第二吸收阱层具有在一个周期中最厚的第一吸收阱层的层厚度的1/2或更小，并且耦合阻挡层的层厚度小于在一个周期中最厚的出口阻挡层的层厚度。 单元层叠结构具有从第一阱层的地电平产生的检测下位电平，通过耦合第一阱层中的激发电平而产生的检测上限电平和第二阱层中的接地电平，以及传输电平结构 对于电子。