公开(公告)号：US20230318256A1

公开(公告)日：2023-10-05

申请号：US18190727

申请日：2023-03-27

Applicant: NICHIA CORPORATION ,  FURUKAWA ELECTRIC CO., LTD.

Inventor： Hideaki TAKEDA ,  Norihiro DEJIMA ,  Kazuma KOZURU ,  Toshiaki YAMASHITA ,  Akira YUKUMOTO

IPC: H01S5/02253 ,  H01S5/0236 ,  H01S5/02326

CPC classification number: H01S5/02253 ,  H01S5/0236 ,  H01S5/02326

Abstract: A laser light source includes: a submount; a semiconductor laser element fixed to the submount, the semiconductor laser element having a light-exiting surface through which laser light is to be emitted; a lens member having a light incident surface on which the laser light is incident and a bonding surface that extends laterally from the light incident surface; a supporting member connecting the lens member and the submount together so that the light incident surface of the lens member faces the light-exiting surface of the semiconductor laser element; and an inorganic bonding layer bonding the bonding surface of the lens member and the supporting member together. Between the light incident surface and the bonding surface, the lens member has a surface extending in a direction intersecting the light incident surface and the bonding surface.

公开(公告)号：US20210336411A1

公开(公告)日：2021-10-28

申请号：US17239981

申请日：2021-04-26

Applicant: NICHIA CORPORATION

Inventor： Norihiro DEJIMA ,  Hidenori MATSUO ,  Masaki OMORI ,  Hideaki TAKEDA

IPC: H01S5/02325 ,  H01S5/0237

Abstract: A method of manufacturing a laser light source includes: providing a submount, the submount having a principal surface on which a laser diode chip is to be fixed, and comprising a pair of lens supports each including an end surface, the end surfaces located at opposite sides with respect to an emission end surface of the laser diode chip; providing a lens having a bonding surface; performing adjustment such that end surfaces of the pair of lens supports of the submount are parallel to a reference plane; performing adjustment such that the bonding surface of the lens is parallel to the reference plane; and while maintaining the end surfaces of the pair of lens supports and the bonding surface of the lens so as to be parallel to the reference plane, bonding the end surfaces with the bonding surface of the lens using an inorganic bonding member.

公开(公告)号：US20230031544A1

公开(公告)日：2023-02-02

申请号：US17788808

申请日：2020-09-08

Applicant: NICHIA CORPORATION

Inventor： Norihiro DEJIMA ,  Hideaki TAKEDA ,  Hidenori MATSUO ,  Masaki OMORI

IPC: H01S5/02326 ,  H01S5/02253 ,  H01S5/02335 ,  H01S5/026

Abstract: A laser light source includes: a laser diode chip including an emission layer, a substrate supporting the emission layer, and an emission end surface; a submount that includes a principal surface on which the laser diode chip is fixed and a pair of lens supports located at opposite sides with respect to the emission end surface of the laser diode chip; a lens bonded to the end surfaces of the pair of lens supports; and a semiconductor laser package housing the aforementioned elements. The laser diode chip is fixed to the submount with the emission layer being closer to the submount than is the substrate. The emission end surface of the laser diode chip is located outward with respect to an edge of the principal surface. The end surfaces of the pair of lens supports are located outward with respect to the first end surface of the laser diode chip.

公开(公告)号：US20180095285A1

公开(公告)日：2018-04-05

申请号：US15721455

申请日：2017-09-29

Applicant: NICHIA CORPORATION

Inventor： Norihiro DEJIMA

IPC: G02B27/10 ,  H01S5/40 ,  H01S5/024 ,  G02B6/42 ,  G02B6/02 ,  G02B6/036 ,  G02B27/30

CPC classification number: G02B6/4214 ,  G02B6/02042 ,  G02B6/036 ,  G02B6/4206 ,  G02B27/1006 ,  G02B27/30 ,  H01S3/0813 ,  H01S5/02469 ,  H01S5/141 ,  H01S5/34333 ,  H01S5/4012 ,  H01S5/4087

Abstract: A light source device includes: a laser diode bar comprising a plurality of strips configured to emit light in a wavelength region with a predetermined width; a light guiding part comprising a plurality of cores, each of which corresponds to a respective one of the plurality of strips, and on each of which light emitted from the respective one of the strips is incident; a diffraction grating on which light emitted from the cores is incident; and a resonator mirror on which light emitted from the diffraction grating is incident. The cores are disposed such that light emitted from the cores is incident on a region of the diffraction grating at different angles. The diffraction grating comprises a pattern configured to diffract light incident on the diffraction grating from the cores such that the diffracted light is emitted along a single optical axis.

公开(公告)号：US20230187907A1

公开(公告)日：2023-06-15

申请号：US18063815

申请日：2022-12-09

Applicant: NICHIA CORPORATION

Inventor： Norihiro DEJIMA ,  Masaki OMORI

IPC: H01S5/40 ,  G02B27/28 ,  G02B5/18 ,  H01S5/02251 ,  G02B27/10 ,  B23K26/06

CPC classification number: H01S5/4012 ,  G02B27/283 ,  G02B5/1866 ,  H01S5/4087 ,  H01S5/02251 ,  G02B27/286 ,  G02B27/1086 ,  B23K26/0613

Abstract: A wavelength beam combining device includes: a polarization beam splitter configured to separate the plurality of laser beams into a plurality of first polarized light beams linearly polarized in a first polarization direction and a plurality of second polarized light beams linearly polarized in a second polarization direction that is orthogonal to the first polarization direction; a first polarization conversion element configured to convert the second polarized light beams into a plurality of third polarized light beams linearly polarized in the first polarization direction; a diffraction grating configured to diffract the plurality of first polarized light beams and generate a coaxially combined first wavelength-combined beam, and to diffract the plurality of third polarized light beams and generate a coaxially combined second wavelength-combined beam; and a polarization beam combiner configured to generate and emit a third wavelength-combined beam into which the first wavelength-combined beam and the second wavelength-combined beam have been coaxially combined.

公开(公告)号：US20190162973A1

公开(公告)日：2019-05-30

申请号：US16203448

申请日：2018-11-28

Applicant: NICHIA CORPORATION

Inventor： Norihiro DEJIMA ,  Takahiro OYU

IPC: G02B27/09 ,  G02B5/18

Abstract: A light source device includes: a light source part comprising a plurality of laser light sources, each laser light source being configured to emit light having a predetermined wavelength width; a plurality of collimators; a light-condensing part configured to adjust light emitted from the collimators into parallel light and to condense the parallel light; a diffraction grating configured to receive the condensed light; and an output coupler disposed in an optical path of diffracted light from the diffraction grating so as to form an external resonator with the laser light sources, wherein a reflecting surface of the output coupler is a depressed surface; and an adjusting lens disposed downstream of the output coupler, the adjusting lens being configured to convert light emitted from the output coupler into substantially parallel light or to condense the light emitted from the output coupler.

公开(公告)号：US20240399496A1

公开(公告)日：2024-12-05

申请号：US18670903

申请日：2024-05-22

Applicant: NICHIA CORPORATION

Inventor： Norihiro DEJIMA ,  Shingo MIZUNO ,  Masaki OMORI

IPC: B23K26/06

Abstract: A wavelength beam combining device configured to combine collimated beams of different peak wavelengths whose central axes emitted in a first direction are arranged in a second direction intersecting the first direction, includes: an optical element configured to reduce a distance between beam central axes of the collimated beams and to cause the collimated beams with the reduced distance therebetween to exit; and first and second diffraction gratings. The first diffraction grating is disposed at a position where the collimated beams exiting from the optical element are received and to diffract the collimated beams in different directions depending on wavelengths to allow the collimated beams to enter the second diffraction grating. The second diffraction grating is configured to further diffract the collimated beams diffracted by the first diffraction grating to form a wavelength-combined beam and is configured to cause the wavelength-combined beam to exit.

公开(公告)号：US20210265817A1

公开(公告)日：2021-08-26

申请号：US17306417

申请日：2021-05-03

Applicant: NICHIA CORPORATION

Inventor： Norihiro DEJIMA ,  Masaki OMORI

IPC: H01S5/14 ,  G02B27/10 ,  G02B5/02 ,  H01S5/40 ,  G02B5/18

Abstract: A light source device includes: a plurality of laser sources; a plurality of collimating parts, each configured to collimate the light beam emitted from a corresponding one of the laser sources; a combining grating configured to diffract, at an identical diffraction angle, light beams that have passed through the collimating parts and are incident on the combining grating at different incident angles to combine the diffracted light beams; and a plurality of volume holographic gratings, wherein each of the volume holographic gratings is disposed in an optical path between a corresponding one of the laser sources and the combining grating, wherein each of the volume holographic gratings determines a wavelength of the light beam incident on the combining grating, and wherein each of the volume holographic gratings is configured to diffract a portion of the light beam emitted from a corresponding laser source back to the laser source.

公开(公告)号：US20200321752A1

公开(公告)日：2020-10-08

申请号：US16904886

申请日：2020-06-18

Applicant: NICHIA CORPORATION

Inventor： Norihiro DEJIMA

IPC: H01S5/40 ,  H01S5/0625 ,  H01S5/14

Abstract: A light source device includes: a plurality of laser light sources, each configured to emit a light beam; a plurality of collimating lenses, each configured to collimate the light beam emitted from a corresponding one of the laser light sources; a first transmission diffraction grating configured to diffract and combine, in an identical diffraction angle direction, the light beams transmitted through the collimating lenses and incident on a single region at different incident angles; a sensor configured to detect a positional deviation in diffracted light beams that are diffracted and combined by the first transmission diffraction grating; and a plurality of wavelength selecting elements, each disposed on an optical path between a respective one of the collimating lenses and the first transmission diffraction grating and configured to select a wavelength of a corresponding one of the light beams incident on the first transmission diffraction grating.

公开(公告)号：US20240213745A1

公开(公告)日：2024-06-27

申请号：US18392438

申请日：2023-12-21

Applicant: NICHIA CORPORATION

Inventor： Hidenori MATSUO ,  Norihiro DEJIMA ,  Hisashi OGAWA

IPC: H01S5/40 ,  H01S5/02251 ,  H01S5/02253 ,  H01S5/14

CPC classification number: H01S5/4012 ,  H01S5/02251 ,  H01S5/02253 ,  H01S5/141

Abstract: A wavelength beam combining device includes: a plurality of light source devices; and a diffraction grating configured to perform wavelength beam combining of a plurality of laser beams emitted from the plurality of light source devices. At least one of the plurality of light source devices includes: a first light source unit including: a first external resonator formed by a first wavelength selection element and a first resonator mirror, a first light source, and a first internal optical path adjusting element, a second light source unit including: a second external resonator formed by the first wavelength selection element and a second resonator mirror, a second light source, and a second internal optical path adjusting element, a first external optical path adjusting element, and a second external optical path adjusting element.