公开(公告)号：US20190020178A1

公开(公告)日：2019-01-17

申请号：US16054462

申请日：2018-08-03

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Atsushi OGURI ,  Etsuji KATAYAMA ,  Yuta ISHIGE ,  Toshio KIMURA ,  Yutaka OHKI ,  Hajime MORI

IPC: H01S5/40 ,  H01S5/14 ,  H01S5/06 ,  H01S5/065 ,  H01S5/022

Abstract: A laser apparatus includes light source elements outputting laser beams; a wavelength-selecting element disposed in an optical path of each of the laser beams and configured to cause light in a predetermined wavelength band to selectively transmit therethrough; and a partially transmissive-reflector that receives the light transmitted through the wavelength-selecting element, reflects a part of the input light toward the wavelength-selecting element, and causes its remainder to transmit therethrough. The wavelength-selecting element causes a part of the respective laser beams output from the respective light source elements to selectively transmit therethrough, the partially transmissive-reflector reflects a part of the respective transmitted laser beams, and the wavelength-selecting element causes a part of the respective reflected laser beams to transmit to return to the light source elements, and each of the light source elements preferentially oscillates at a wavelength of the laser beam that transmits through the wavelength-selecting element.

公开(公告)号：US20230411922A1

公开(公告)日：2023-12-21

申请号：US18363030

申请日：2023-08-01

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Kohei KAWASAKI ,  Hajime MORI ,  Taisuke ATSUMI

IPC: H01S3/067 ,  G02B6/28 ,  G02B6/02

CPC classification number: H01S3/06783 ,  G02B6/02042 ,  G02B6/2856

Abstract: A laser processing apparatus includes: at least two first input optical fibers; an output optical fiber; a coupler configured to optically couple a first end of a bundle portion, in which the at least two first input optical fibers are bundled, to a second end of the output optical fiber; at least one first light source optically connected to one of the first input optical fibers to output laser light; and an optical head optically connected to the output optical fiber to output laser light and passing through the first input optical fiber and the output optical fiber. In a cross section intersecting an axial direction of the first end, a cladding of the first input optical fiber has an extending portion extending linearly in a direction intersecting the axial direction between cores of two first input optical fibers adjacent in a circumferential direction.

公开(公告)号：US20190280459A1

公开(公告)日：2019-09-12

申请号：US16422343

申请日：2019-05-24

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Yuta ISHIGE ,  Etsuji KATAYAMA ,  Atsushi OGURI ,  Hajime MORI

IPC: H01S5/022 ,  H01S5/00 ,  G02B6/42

Abstract: A laser device that is easily assembled and can be manufactured at low cost and a light-source device using the same are provided. The laser device includes a base plate portion, a semiconductor laser element placed on the base plate portion, a lid portion provided on the base plate portion, on which the semiconductor laser element is placed, and including a top plate, and a side wall portion covering a part or all of lateral sides of a space between the base plate portion and the top plate. The top plate is integrally formed with a part or all of the side wall portion.