公开(公告)号：US20160116679A1

公开(公告)日：2016-04-28

申请号：US14984483

申请日：2015-12-30

Applicant: Lumentum Operations LLC ,  Amada Holdings Co., Ltd.

Inventor： Martin H. MUENDEL ,  Dahv KLINER

IPC: G02B6/32 ,  B23K26/06 ,  B23K26/073 ,  G02B6/42

CPC classification number: G02B6/32 ,  B23K26/0626 ,  B23K26/0648 ,  B23K26/073 ,  B23K26/0734 ,  G02B6/262 ,  G02B6/4206 ,  G02B6/4216 ,  G02B6/4226 ,  G02B6/4296

Abstract: An optical delivery waveguide for a material laser processing system includes a small lens at an output end of the delivery waveguide, transforming laser beam divergence inside the waveguide into a spot size after the lens. By varying the input convergence angle and/or launch angle of the laser beam launched into the waveguide, the output spot size can be continuously varied, thus enabling a continuous and real-time laser spot size adjustment on the workpiece, without having to replace the delivery waveguide or a process head. A divergence of the laser beam can also be adjusted dynamically and in concert with the spot size.

公开(公告)号：US20170110845A1

公开(公告)日：2017-04-20

申请号：US15393887

申请日：2016-12-29

Applicant: Lumentum Operations LLC

Inventor： Kai-Chung HOU ,  Dahv KLINER ,  Martin H. MUENDEL ,  Jeremy WESTON

IPC: H01S3/067 ,  H01S3/0941 ,  B23K26/0622 ,  B23K26/36 ,  B23K26/06 ,  H01S3/094 ,  B29D11/00

CPC classification number: H01S3/06729 ,  B23K26/0622 ,  B23K26/0626 ,  B23K26/36 ,  B29D11/00663 ,  G02B6/02066 ,  G02B6/14 ,  G02B6/264 ,  G02B6/2852 ,  H01S3/06733 ,  H01S3/094007 ,  H01S3/0941

Abstract: A cladding stripper includes a plurality of transversal notches or grooves in the outer surface of an exposed inner cladding of a double clad optical fiber. Position and orientation of the notches can be selected to even out cladding light release along the cladding light stripper, enabling more even temperature distributions due to released cladding light. The notches on the optical fiber can be made with a laser ablation system.