公开(公告)号：US20130299474A1

公开(公告)日：2013-11-14

申请号：US13944415

申请日：2013-07-17

Applicant: Furukawa Electric Co. Ltd.

Inventor： Kosuke KASHIWAGI ,  Akira FUJISAKI ,  Yoshihiro EMORI

IPC: B23K26/02 ,  H01S3/067

CPC classification number: H01S3/0675 ,  B23K26/042 ,  H01S3/067 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/09415 ,  H01S3/10038 ,  H01S3/2375 ,  H01S3/2391

Abstract: A fiber laser apparatus that generates invisible laser light using an amplification optical fiber having a single-mode core and outputs the invisible laser light via an output optical fiber is provided. The fiber laser apparatus includes a visible laser light source that generates visible laser light, an introducing section that introduces the visible laser light generated by the visible laser light source into a core of one of the amplification optical fiber and the output optical fiber, and a drive unit that drives, in a case of performing alignment of an irradiation position of the invisible laser light with respect to a workpiece, the visible laser light source and emits the visible laser light via the core of the output optical fiber.

Abstract translation: 提供一种使用具有单模核心的放大光纤产生不可见激光并通过输出光纤输出不可见激光的光纤激光装置。 光纤激光装置包括产生可见激光的可见激光光源，将由可见激光光源产生的可见激光引入放大光纤和输出光纤之一的核心的导入部，以及 驱动单元，在对不可见激光的照射位置相对于工件进行对准的情况下，驱动所述可见激光光源，并通过所述输出光纤的纤芯发射所述可见激光。

公开(公告)号：US20240253153A1

公开(公告)日：2024-08-01

申请号：US18290497

申请日：2022-05-11

Applicant: KOMATSU INDUSTRIES CORPORATION ,  FURUKAWA ELECTRIC CO., LTD.

Inventor： Seiichi HAYASHI ,  Kosuke KASHIWAGI

IPC: B23K26/06 ,  B23K26/38 ,  B23K103/04 ,  G02B6/42

CPC classification number: B23K26/0608 ,  B23K26/38 ,  B23K2103/04 ,  G02B6/4207

Abstract: A feeding fiber cable collectively extracts laser light generated by each of a plurality of fiber laser engines. A processing head converges and emits laser light to a workpiece. A process fiber cable transmits the laser light extracted by the feeding fiber cable to the processing head. The core diameter of the feeding fiber cable and that of the process fiber cable are equal and 50 μm. The plurality of fiber laser engines each have a filter that reduces a value of Raman scattered light in the laser light.

公开(公告)号：US20190089113A1

公开(公告)日：2019-03-21

申请号：US16194071

申请日：2018-11-16

Applicant: Furukawa Electric Co., Ltd.

Inventor： Kosuke KASHIWAGI ,  Akira FUJISAKI ,  Yoshihiro EMORI

IPC: H01S3/067 ,  B23K26/042

Abstract: A fiber laser apparatus that generates invisible laser light using an amplification optical fiber having a core and that propagates a fundamental mode and a low-order mode is provided. The fiber laser apparatus includes a visible laser light source that generates visible laser light, an introducing section that introduces the visible laser light generated by the visible laser light source into a core of the amplification optical fiber, a cladding light attenuating section that attenuates light which has propagated through a cladding of the amplification optical fiber, at a subsequent stage of the amplification optical fiber, and a drive unit that drives the visible laser light source to emit the visible laser light through a core of the output optical fiber in a case of performing alignment of an irradiation position of the invisible laser light with respect to a workpiece.