公开(公告)号：US10008829B2

公开(公告)日：2018-06-26

申请号：US15251119

申请日：2016-08-30

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Tatsuo Dougakiuchi ,  Kazuue Fujita ,  Akio Ito ,  Tadataka Edamura

IPC: H01S5/14 ,  H01S5/34 ,  H01S5/12 ,  H01S5/06 ,  H01S5/20 ,  H01S5/026 ,  H01S5/10 ,  H01S5/18

CPC classification number: H01S5/3402 ,  H01S5/0207 ,  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.

公开(公告)号：US11075315B2

公开(公告)日：2021-07-27

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

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：USD899284S1

公开(公告)日：2020-10-20

申请号：US29684296

申请日：2019-03-20

Applicant: HAMAMATSU PHOTONICS K.K.

Designer： Tatsuo Dougakiuchi ,  Akio Ito ,  Masahiro Hitaka ,  Tadataka Edamura

公开(公告)号：USD899279S1

公开(公告)日：2020-10-20

申请号：US29684290

申请日：2019-03-20

Applicant: HAMAMATSU PHOTONICS K.K.

Designer： Tatsuo Dougakiuchi ,  Akio Ito ,  Masahiro Hitaka ,  Tadataka Edamura

公开(公告)号：US09909980B2

公开(公告)日：2018-03-06

申请号：US15294882

申请日：2016-10-17

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Akio Ito ,  Tatsuo Dougakiuchi ,  Tadataka Edamura

IPC: G01N21/00 ,  G01N21/39 ,  H01S5/34 ,  H01S5/026 ,  H01S5/22

CPC classification number: G01N21/39 ,  G01N2021/399 ,  H01S5/0264 ,  H01S5/22 ,  H01S5/3401 ,  H01S2301/176

Abstract: A fluid analyzer includes a substrate, a quantum cascade laser formed on a surface of the substrate and including a first light-emitting surface and a second light-emitting surface facing each other, a first quantum cascade detector formed on the surface and including the same layer structure as the quantum cascade laser and a first light incident surface facing the first light-emitting surface, a second quantum cascade detector formed on the surface and including the same layer structure as the quantum cascade laser and a second light incident surface facing the second light-emitting surface, and a resin member covering at least the second light-emitting surface and the second light incident surface and having optical transparency and an electrical insulation property. A first space in which a fluid to be analyzed is disposed is provided in a first area between the first light-emitting surface and the first light incident surface.

公开(公告)号：US12078813B2

公开(公告)日：2024-09-03

申请号：US17108278

申请日：2020-12-01

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Takahide Ochiai ,  Naota Akikusa ,  Tatsuo Dougakiuchi ,  Tadataka Edamura

IPC: G02B27/09 ,  B29C65/16 ,  G02B6/10 ,  G02B27/48

CPC classification number: G02B27/0933 ,  G02B6/102 ,  G02B27/0916 ,  G02B27/0994 ,  G02B27/48 ,  B29C65/1619 ,  B29C65/1687

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.

公开(公告)号：USD960006S1

公开(公告)日：2022-08-09

申请号：US29749733

申请日：2020-09-09

Applicant: HAMAMATSU PHOTONICS K.K.

Designer： Tatsuo Dougakiuchi ,  Akio Ito ,  Masahiro Hitaka ,  Tadataka Edamura

公开(公告)号：US11067728B2

公开(公告)日：2021-07-20

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.

公开(公告)号：USD892656S1

公开(公告)日：2020-08-11

申请号：US29684293

申请日：2019-03-20

Applicant: HAMAMATSU PHOTONICS K.K.

Designer： Tatsuo Dougakiuchi ,  Akio Ito ,  Masahiro Hitaka ,  Tadataka Edamura

公开(公告)号：US09929292B2

公开(公告)日：2018-03-27

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: G01N21/3504 ,  H01L31/0352 ,  H01L31/0304 ,  H01L31/109 ,  H01L31/0216 ,  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.