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公开(公告)号：US12030134B2
公开(公告)日：2024-07-09
申请号：US16965375
申请日：2019-02-01
发明人： Andrew Malinowski , Christophe Andre Codemard , Mikhail Nickolaos Zervas , Iain Botheroyd , Stephen John Keen , Malcolm Paul Varnham
IPC分类号： B23K26/06 , B22F3/105 , B22F3/24 , B23K26/073 , B23K26/34 , B23K26/342 , B23K26/38 , G02B6/14 , G02B6/26 , B33Y10/00 , B33Y30/00 , B33Y40/20
CPC分类号： B23K26/342 , B22F3/105 , B22F3/24 , B23K26/0648 , B23K26/0734 , B23K26/34 , B23K26/38 , G02B6/14 , G02B6/268 , B22F2003/247 , B33Y10/00 , B33Y30/00 , B33Y40/20
摘要： Apparatus for laser processing a material (11), comprising a laser (1), an optical fibre (2), and a coupler (125), wherein: the laser (1) is connected to the optical fibre (2); the optical fibre (2) is a multimode optical fibre having a first optical mode (21) having a first mode order (24), a second optical mode (22) having a second mode order (25), and a third optical mode (23) having a third mode order (26); the third mode order (26) is higher than the second mode order (25) which is higher than the first mode order (24); the coupler (125) switches laser radiation propagating in the first optical mode (21) to laser radiation propagating in the second optical mode (22); and the coupler (125) switches the laser radiation propagating in the second optical mode (22) to laser radiation propagating in the third optical mode (23).
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公开(公告)号：US20240342833A1
公开(公告)日：2024-10-17
申请号：US18753349
申请日：2024-06-25
发明人： Andrew Malinowski , Christophe Andre Codemard , Mikhail Nickolaos Zervas , Paul Martin Harrison , Mark Greenwood
IPC分类号： B23K26/38 , B23K26/06 , B23K26/073 , B23K26/08 , B23K26/142 , B23K26/20 , B23K26/34 , G02B6/02 , G02B27/48
CPC分类号： B23K26/38 , B23K26/06 , B23K26/0648 , B23K26/0665 , B23K26/073 , B23K26/0876 , B23K26/142 , B23K26/20 , B23K26/34 , G02B6/02042 , G02B6/02071 , G02B27/48
摘要： Apparatus (10) for laser processing a material (11), which apparatus comprises a laser (1) and a beam delivery cable (2), wherein: the laser (1) is connected to the beam delivery cable (2); the beam delivery cable (2) is configured to transmit laser radiation (13) emitted from the laser (1), and the laser radiation (13) is defined by a beam parameter product (4); and the apparatus (10) is characterized in that: the apparatus (10) includes at least one squeezing mechanism (5) comprising a periodic surface (6) defined by a pitch (7); a length (8) of optical fibre (9) that forms part of the laser (1) and/or the beam delivery cable (2) is located adjacent to the periodic surface (6); and the squeezing mechanism (5) is configured to squeeze the periodic surface (6) and the length (8) of the optical fibre (9) together with a squeezing force (12); whereby the beam parameter product (4) is able to be varied by adjusting the squeezing force (12).
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公开(公告)号：US11331757B2
公开(公告)日：2022-05-17
申请号：US16965709
申请日：2019-02-01
发明人： Andrew Malinowski , Christophe Andre Codemard , Mikhail Nickolaos Zervas , Iain Botheroyd , Stephen John Keen , Malcolm Paul Varnham
IPC分类号： B22F3/105 , B23K26/06 , B23K26/073 , G02B6/14 , G02B6/26 , B23K26/342 , B22F3/24 , B23K26/38 , B23K26/34 , B33Y10/00 , B33Y30/00 , B33Y40/20
摘要： An apparatus for laser processing a material including an optical fibre, at least one squeezing mechanism, and a lens. The optical fibre is a multimode optical fibre in which laser radiation propagates in a first optical mode and in a second optical mode. The squeezing mechanism includes at least one periodic surface defined by a pitch. The periodic surface is located adjacent to the optical fibre. The pitch couples the first and second optical modes together. The first optical mode is defined by a first mode order. The second optical mode is defined by a second mode order which is higher than the first mode order. The squeezing mechanism squeezes the periodic surface and optical fibre together with a squeezing force thereby coupling the first optical mode to the second optical mode.
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