Invention Grant
- Patent Title: Fiber laser apparatus
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Application No.: US16194071Application Date: 2018-11-16
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Publication No.: US11171462B2Publication Date: 2021-11-09
- Inventor: Kosuke Kashiwagi , Akira Fujisaki , Yoshihiro Emori
- Applicant: Furukawa Electric Co., Ltd.
- Applicant Address: JP Tokyo
- Assignee: Furukawa Electric Co., Ltd.
- Current Assignee: Furukawa Electric Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Thompson Coburn LLP
- Priority: JP2011-007682 20110118,JP2011-188671 20110831
- Main IPC: H01S3/067
- IPC: H01S3/067 ; B23K26/042 ; H01S3/23 ; H01S3/094 ; H01S3/0941 ; H01S3/10

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.
Public/Granted literature
- US20190089113A1 Fiber Laser Apparatus Public/Granted day:2019-03-21
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