JPWO2019150070A5 - - Google Patents
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- JPWO2019150070A5 JPWO2019150070A5 JP2020541943A JP2020541943A JPWO2019150070A5 JP WO2019150070 A5 JPWO2019150070 A5 JP WO2019150070A5 JP 2020541943 A JP2020541943 A JP 2020541943A JP 2020541943 A JP2020541943 A JP 2020541943A JP WO2019150070 A5 JPWO2019150070 A5 JP WO2019150070A5
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Claims (37)
前記レーザ(1)は、前記光ファイバ(2)に接続され、
前記光ファイバ(2)は、レーザ放射(13)が、第1モード次数(24)を有する第1光モード(21)、第2モード次数(25)を有する第2光モード(22)、および、第3モード次数(26)を有する第3光モード(23)における前記光ファイバ(2)に沿って伝播することができるようなものであり、
前記第3モード次数(26)は前記第2モード次数(25)よりも高く、
前記第2モード次数(25)は前記第1モード次数(24)よりも高い、装置であり、
前記装置は、
前記カプラ(125)が、前記第1光モード(21)において伝搬するレーザ放射を、前記第2光モード(22)において伝搬するレーザ放射に切り替えるように構成され、
前記カプラ(125)は、前記第2光モード(22)において伝搬する前記レーザ放射を、前記第3光モード(23)において伝搬するレーザ放射に切り替えるように構成されることを特徴とする、装置。 A device for laser processing a material, comprising a laser (1), an optical fiber (2), and a coupler (125).
The laser (1) is connected to the optical fiber (2) and is connected to the optical fiber (2).
In the optical fiber (2), the laser emission (13) has a first optical mode (21) having a first mode order (24), a second optical mode (22) having a second mode order (25), and an optical fiber (2). , Such that it can propagate along the optical fiber (2) in the third optical mode (23) having a third mode order (26).
The third mode order (26) is higher than the second mode order (25).
The second mode order (25) is a device higher than the first mode order (24).
The device is
The coupler (125) is configured to switch the laser radiation propagating in the first light mode (21) to the laser radiation propagating in the second light mode (22).
The coupler (125) is configured to switch the laser radiation propagating in the second light mode (22) to the laser radiation propagating in the third light mode (23). ..
それによって、前記レーザ放射のトップハット光パワー分布を形成することを可能にする、請求項1または2に記載の装置。 The coupler (125) is configured to switch the laser emission propagating in the first light mode (21) to a plurality of light modes.
The device of claim 1 or 2, thereby making it possible to form a top hat light power distribution of said laser radiation.
前記レンズ(4)は前側焦点面(14)および後側焦点面(15)によって画定され、
前記第1光モード(21)はレイリー長によって画定され、
前記レンズ(4)は、前記レーザ(1)からの前記光ファイバ(2)の遠位端(16)からのレイリー長のうちの2つの範囲内に位置し、
前記レイリー長は、前記光ファイバ(2)の遠位端(16)から、前記第1光モード(21)の半径が、2つの平方根のファクタだけ増加した平面までの距離として画定される、
請求項1ないし4のいずれか1項に記載の装置。 The device includes a lens (4).
The lens (4) is defined by an anterior focal plane (14) and a posterior focal plane (15).
The first light mode (21) is defined by the Rayleigh length.
The lens (4) is located within two ranges of Rayleigh length from the distal end (16) of the optical fiber (2) from the laser (1).
The Rayleigh length is defined as the distance from the distal end (16) of the optical fiber (2) to a plane in which the radius of the first optical mode (21) is increased by two square root factors.
The apparatus according to any one of claims 1 to 4.
前記第3光モード(23)および前記第1光モード(21)は、前記コア(31)のうちの異なるコア内を伝播する、
請求項1ないし7のいずれか1項に記載の装置。 The optical fiber (2) has a plurality of cores (31) and has a plurality of cores (31).
The third light mode (23) and the first light mode (21) propagate within different cores of the core (31).
The apparatus according to any one of claims 1 to 7.
前記周期表面(6)は、前記光ファイバ(2)に隣接して位置しており、
前記圧搾機構(3)は、圧搾力(12)とともに周期表面(6)および光ファイバ(2)を圧搾し、
これにより第1光モード(21)を第2光モード(22)に結合し、
第2光モード(22)を第3光モード(23)に結合する
ように構成されている、請求項1ないし9のいずれか1項に記載の装置。 The coupler (125) comprises at least one squeezing mechanism (3) with a periodic surface (6) defined by a pitch (7).
The periodic surface (6) is located adjacent to the optical fiber (2).
The squeezing mechanism (3) squeezes the periodic surface (6) and the optical fiber (2) together with the squeezing force (12).
As a result, the first light mode (21) is combined with the second light mode (22).
The apparatus according to any one of claims 1 to 9, wherein the second optical mode (22) is configured to be coupled to the third optical mode (23).
前記可変ピッチは、第1ピッチおよび第2ピッチを有し、
前記第1ピッチは、前記第1光モード(21)および前記第2光モード(22)を互いに結合し、
前記第2ピッチは、前記第2光モード(22)および前記第3光モード(23)を互いに結合する、
請求項10または請求項11に記載の装置。 The pitch (7) is a variable pitch chirped along the length of the periodic surface (6).
The variable pitch has a first pitch and a second pitch.
The first pitch couples the first light mode (21) and the second light mode (22) to each other.
The second pitch couples the second light mode (22) and the third light mode (23) to each other.
The device according to claim 10 or 11.
前記圧搾機構(3)は、前記圧搾力(12)を増大させることによって、前記ビームパラメータ積(33)が増大されることができるようになっている、
請求項10ないし13のいずれか1項に記載の装置。 The laser emission is defined by the beam parameter product (33).
The squeezing mechanism (3) is capable of increasing the beam parameter product (33) by increasing the squeezing force (12).
The apparatus according to any one of claims 10 to 13.
それによって、前記レーザ放射がトップハットまたは環状リングプロファイルを有することを可能にする、請求項10ないし14のいずれか1項に記載の装置。 A long-period grating (127) configured to couple the third light mode (23) to a plurality of light modes is included.
The device of any one of claims 10-14, thereby allowing the laser emission to have a top hat or annular ring profile.
前記周期表面(6)は前記光ファイバ(2)に隣接して配置され、
前記圧搾機構(129)は、前記周期表面(6)および前記光ファイバ(2)をともに、圧搾力(12)で圧搾する
ように構成される、請求項15に記載の装置。 The long-period grating (127) comprises a second squeezing mechanism (129) with a periodic surface (6) defined by a pitch (7).
The periodic surface (6) is arranged adjacent to the optical fiber (2), and the periodic surface (6) is arranged adjacent to the optical fiber (2).
The device according to claim 15, wherein the squeezing mechanism (129) is configured to squeeze both the periodic surface (6) and the optical fiber (2) with a squeezing force (12).
それによって、前記第1、第2、第3光モードの間の意図しないモード結合を回避する、請求項1ないし17のいずれか1項に記載の装置。 The optical fiber (2) comprises a substantially homogeneous core (31).
The device according to any one of claims 1 to 17, thereby avoiding an unintended mode coupling between the first, second, and third optical modes.
前記レーザ放射(13)が、第1モード次数(24)を有する第1光モード(21)、
第2モード次数(25)を有する第2光モード(22)、および、第3モード次数(26)を有する第3光モード(23)において伝播することができる光ファイバ(2)を提供するステップと、
前記レーザ放射(13)を前記光ファイバ(2)の前記第1光モード(21)に結合するステップと、
を含み、
ここで、
前記第3モード次数(26)は前記第2モード次数(25)より高く、
前記第2モード次数(25)は前記第1モード次数(24)より高いものであり、
前記方法は、
前記第1光モード(21)において伝播する前記レーザ放射を、前記第2光モード(22)において伝播するレーザ放射に切り替え、前記第2光モード(22)において伝播するレーザ放射を、前記第3光モード(23)において伝播するレーザ放射に切り替えるように構成されたカプラ(125)を提供するステップと、
前記レーザ放射(13)で前記材料をレーザ加工するステップと、
によって特徴付けられる、方法。 A method of laser machining a material, wherein the method comprises the steps provided by the laser (1) that emits the laser radiation (13).
The first light mode (21), wherein the laser emission (13) has a first mode order (24).
A step of providing an optical fiber (2) capable of propagating in a second optical mode (22) having a second mode order (25) and a third optical mode (23) having a third mode order (26). When,
A step of coupling the laser emission (13) to the first optical mode (21) of the optical fiber (2).
Including
here,
The third mode order (26) is higher than the second mode order (25).
The second mode order (25) is higher than the first mode order (24).
The method is
The laser radiation propagating in the first light mode (21) is switched to the laser radiation propagating in the second light mode (22), and the laser radiation propagating in the second light mode (22) is transferred to the third light mode (22). A step of providing a coupler (125) configured to switch to propagating laser radiation in optical mode (23), and
The step of laser processing the material with the laser radiation (13),
The method characterized by.
前記第3光モード(23)に切り替えられる、請求項19に記載の方法。 At least 75% of the laser radiation propagating in the first light mode (21)
19. The method of claim 19, wherein the third optical mode (23) can be switched.
前記レイリー長は、前記光ファイバ(2)の遠位端(16)から、前記第1光モード(21)の半径が2の平方根の因子だけ増加した平面までの距離として定義され、
前記方法は、
前側焦点面(14)および後側焦点面(15)によって画定されるレンズ(4)を提供するステップと、
前記レーザ(1)からの前記光ファイバ(2)の遠位端(16)から前記レイリー長の2つの内に、前記レンズ(4)を位置決めするステップと、
を含む、請求項19ないし21のいずれか1項に記載の方法。 The first light mode (21) is defined by the Rayleigh length.
The Rayleigh length is defined as the distance from the distal end (16) of the optical fiber (2) to a plane in which the radius of the first optical mode (21) is increased by a square root factor of 2.
The method is
A step of providing a lens (4) defined by an anterior focal plane (14) and a posterior focal plane (15).
A step of positioning the lens (4) within two Rayleigh lengths from the distal end (16) of the optical fiber (2) from the laser (1).
The method according to any one of claims 19 to 21, comprising the method according to claim 19.
前記周期表面(6)は、前記光ファイバ(2)に隣接して配置され、
前記圧搾機構(3)は、前記周期表面(6)および前記光ファイバ(2)を、共に、圧搾力(12)で圧搾する
ように構成される、請求項19ないし26のいずれか1項に記載の方法。 The coupler (125) comprises at least one squeezing mechanism (3) with a periodic surface (6) defined by a pitch (7).
The periodic surface (6) is arranged adjacent to the optical fiber (2), and the periodic surface (6) is arranged adjacent to the optical fiber (2).
The squeezing mechanism (3) is configured to squeeze both the periodic surface (6) and the optical fiber (2) with a squeezing force (12), according to any one of claims 19 to 26 . The method described.
所望の第3光モード(23)を選択するために、規定された制御信号を圧搾機構(3)に印加するためのコントローラ(75)を提供するステップを含み、
それによって、前記第3光モード(23)を選択するステップは、
圧搾力(12)を調整することによって達成される、
請求項27に記載の方法。 The method is
Including a step of providing a controller (75) for applying a defined control signal to the squeezing mechanism (3) to select the desired third light mode (23).
Thereby, the step of selecting the third optical mode (23) is
Achieved by adjusting the squeezing force (12),
27. The method of claim 27.
前記材料を前記レーザ放射(13)で切断するステップと、
を含む、請求項30に記載の方法。 The step of laser machining the material includes a step of selecting the third light mode (23) and a step of selecting the third light mode (23).
The step of cutting the material with the laser radiation (13) and
30. The method of claim 30.
前記材料をピアシングするためにガウスプロファイルを選択するステップと、
前記材料を切断するためにトップハット光パワー分布を選択するステップと、
を含む、請求項4に記載の装置を使用して材料を切断する方法。 A step of focusing the laser (1) onto the material using the optical lens arrangement (50).
With the step of selecting a Gauss profile to pierce the material,
With the step of selecting the top hat light power distribution to cut the material,
4. A method of cutting a material using the apparatus according to claim 4 .
請求項4に記載の装置を使用して、前記光レンズ配置(50)を使用して焦点から離れるようにレーザを照射するステップと、
前記装置を使用して、スポットサイズおよびプロファイルを変化させることによって、溶接プロセスを最適化する作業スポットサイズを変化させるステップと、
を含む方法。 A method of welding materials
The step of irradiating the laser away from the focal point using the optical lens arrangement (50) using the apparatus according to claim 4 .
Using the device, the steps of varying the working spot size to optimize the welding process by varying the spot size and profile.
How to include.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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GBGB1801796.2A GB201801796D0 (en) | 2018-02-02 | 2018-02-02 | Apparatus and method for laser processing a material |
GB1801796.2 | 2018-02-02 | ||
PCT/GB2019/000018 WO2019150070A1 (en) | 2018-02-02 | 2019-02-01 | Apparatus and method for laser processing a material |
Publications (3)
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JP2021511967A JP2021511967A (en) | 2021-05-13 |
JPWO2019150070A5 true JPWO2019150070A5 (en) | 2022-01-18 |
JP7334170B2 JP7334170B2 (en) | 2023-08-28 |
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JP2020541943A Active JP7334170B2 (en) | 2018-02-02 | 2019-02-01 | Apparatus and method for laser processing materials |
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US (2) | US11331757B2 (en) |
EP (1) | EP3746256A1 (en) |
JP (1) | JP7334170B2 (en) |
KR (2) | KR102641783B1 (en) |
CN (2) | CN111683784B (en) |
GB (1) | GB201801796D0 (en) |
WO (2) | WO2019150071A1 (en) |
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WO2024003551A1 (en) | 2022-06-29 | 2024-01-04 | Trumpf Laser Uk Limited | Apparatus for laser processing a material |
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2018
- 2018-02-02 GB GBGB1801796.2A patent/GB201801796D0/en not_active Ceased
-
2019
- 2019-02-01 EP EP19704375.5A patent/EP3746256A1/en active Pending
- 2019-02-01 WO PCT/GB2019/000019 patent/WO2019150071A1/en active Application Filing
- 2019-02-01 US US16/965,709 patent/US11331757B2/en active Active
- 2019-02-01 KR KR1020207025277A patent/KR102641783B1/en active IP Right Grant
- 2019-02-01 JP JP2020541943A patent/JP7334170B2/en active Active
- 2019-02-01 WO PCT/GB2019/000018 patent/WO2019150070A1/en unknown
- 2019-02-01 CN CN201980011498.2A patent/CN111683784B/en active Active
- 2019-02-01 CN CN201980011482.1A patent/CN111683783A/en active Pending
- 2019-02-01 KR KR1020247006104A patent/KR20240028566A/en active Application Filing
- 2019-02-02 US US16/965,375 patent/US20210362269A1/en active Pending
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