JP2019020731A - レーザビームの線形強度分布を生成するための装置 - Google Patents
レーザビームの線形強度分布を生成するための装置 Download PDFInfo
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- 238000006243 chemical reaction Methods 0.000 claims description 17
- 239000007787 solid Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 230000009466 transformation Effects 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 3
- 238000003491 array Methods 0.000 description 9
- 230000003287 optical effect Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
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- 230000004907 flux Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
- H01S3/0071—Beam steering, e.g. whereby a mirror outside the cavity is present to change the beam direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/0604—Shaping the laser beam, e.g. by masks or multi-focusing by a combination of beams
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/12—Optical coatings produced by application to, or surface treatment of, optical elements by surface treatment, e.g. by irradiation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
- G02B27/0955—Lenses
- G02B27/0966—Cylindrical lenses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/073—Shaping the laser spot
- B23K26/0738—Shaping the laser spot into a linear shape
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0009—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only
- G02B19/0014—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only at least one surface having optical power
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0028—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed refractive and reflective surfaces, e.g. non-imaging catadioptric systems
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
- G02B19/0052—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a laser diode
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
- G02B19/0052—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a laser diode
- G02B19/0057—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a laser diode in the form of a laser diode array, e.g. laser diode bar
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0095—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with ultraviolet radiation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0927—Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/0944—Diffractive optical elements, e.g. gratings, holograms
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
- G02B27/0955—Lenses
- G02B27/0961—Lens arrays
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
- G02B27/0972—Prisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/0941—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
- H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0911—Anamorphotic systems
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/10—Mirrors with curved faces
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Astronomy & Astrophysics (AREA)
- Lenses (AREA)
- Laser Beam Processing (AREA)
- Semiconductor Lasers (AREA)
Abstract
Description
互いに離間した2つのビーム変換装置と、
2つのビーム変換装置を通過したレーザビームを線形強度分布に集束させることができる集光手段とを含み、
該装置は、2つのビーム変換装置間の距離を変化させることによって線形強度分布の短手方向の線幅を変更できるように構成されてなることを特徴とする装置である。
があり、
式中、Pは、シリンダ軸に垂直な、ビーム変換装置2,3のシリンダレンズ間のピッチ、または中心間距離であり、fTは、ビーム変換装置2,3のシリンダレンズの焦点距離である。
は、距離が減少すると上昇する。距離が増加すると、またはΔが正であると、まず発散は低下する。値δθ=−θ’yになった後、発散は再び上昇し始める。(正式には「−」で表示)。
Claims (10)
- レーザビームの線形強度分布を生成するための装置であって、
互いに離間した2つのビーム変換装置(2,3)と、
2つのビーム変換装置(2,3)を通過したレーザビームを線形強度分布に集束させることができる集光手段(6a,6b)とを含み、
該装置は、2つのビーム変換装置(2,3)間の距離を変化させることによって線形強度分布の短手方向の線幅を変更できるように構成されてなることを特徴とする装置。 - ビーム変換装置(2,3)の一方または両方は、伝播方向のまわりに、特に、90°の角度でレーザビームを回転させることができる、および/またはビーム変換装置(2,3)の一方または両方は、レーザビームの2つの互いに直交する幅方向の発散または回折指数が逆転するように、レーザビームを変換することができることを特徴とする、請求項1に記載の装置。
- ビーム変換装置(2,3)の一方または両方は、レンズアレイまたはミラーアレイとして形成されていることを特徴とする、請求項1または2に記載の装置。
- レンズアレイの場合、各レンズは、シリンダレンズとして形成され、各レンズのシリンダ軸は、特に、レンズが並んで配設される方向に対して45°の角度になるように方向付けられていることを特徴とする、請求項3に記載の装置。
- ミラーアレイの場合、各ミラーは凹状の曲面を有することを特徴とする、請求項3に記載の装置。
- たとえばレーザダイオードによってポンピングされた固体レーザとして形成される、レーザ光源(10)を含むことを特徴とする、請求項1〜5のいずれか1項に記載の装置。
- 特に、両方のビーム変換装置(2,3)と集光手段との間に配設される、均質化手段(4)を含むことを特徴とする、請求項1〜6のいずれか1項に記載の装置。
- 好ましくはレーザ光源(10)と両方のビーム変換装置(2,3)との間に配設される、テレスコープ、特にアナモルフィックテレスコープ(1)を含むことを特徴とする、請求項1〜7のいずれか1項に記載の装置。
- 特に、2つのビーム変換装置(2,3)の一方を他方に対して移動させることによって、2つのビーム変換装置(2,3)の距離を変化させることができる位置決め手段を含むことを特徴とする、請求項1〜8のいずれか1項に記載の装置。
- 位置決め手段は、精密機械として、または電気機械的アクチュエータとして、たとえば圧電アクチュエータとして形成されることを特徴とする、請求項9に記載の装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102017115964.9 | 2017-07-14 | ||
DE102017115964.9A DE102017115964B4 (de) | 2017-07-14 | 2017-07-14 | Vorrichtung zur Erzeugung einer linienförmigen Intensitätsverteilung einer Laserstrahlung |
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JP2019020731A true JP2019020731A (ja) | 2019-02-07 |
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JP2018133707A Pending JP2019020731A (ja) | 2017-07-14 | 2018-07-13 | レーザビームの線形強度分布を生成するための装置 |
Country Status (7)
Country | Link |
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US (1) | US11105961B2 (ja) |
EP (1) | EP3428713A1 (ja) |
JP (1) | JP2019020731A (ja) |
KR (1) | KR102524153B1 (ja) |
CN (1) | CN109254408B (ja) |
DE (1) | DE102017115964B4 (ja) |
TW (1) | TWI697162B (ja) |
Families Citing this family (1)
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DE102018216940A1 (de) | 2018-10-02 | 2020-04-02 | 3D-Micromac Ag | Laserbearbeitungssystem |
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DE102008033358A1 (de) * | 2007-07-19 | 2009-02-26 | Coherent Gmbh | Vorrichtung und Verfahren zur Umverteilung des Strahlparameter-Produktes eines Laserstrahls |
JP2011216863A (ja) * | 2010-03-17 | 2011-10-27 | Hitachi Via Mechanics Ltd | ビームサイズ可変照明光学装置及びビームサイズ変更方法 |
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-
2017
- 2017-07-14 DE DE102017115964.9A patent/DE102017115964B4/de active Active
-
2018
- 2018-06-22 EP EP18179273.0A patent/EP3428713A1/de not_active Withdrawn
- 2018-06-29 TW TW107122629A patent/TWI697162B/zh active
- 2018-07-13 KR KR1020180081370A patent/KR102524153B1/ko active IP Right Grant
- 2018-07-13 JP JP2018133707A patent/JP2019020731A/ja active Pending
- 2018-07-13 CN CN201810766519.9A patent/CN109254408B/zh active Active
- 2018-07-13 US US16/035,034 patent/US11105961B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US5331466A (en) * | 1991-04-23 | 1994-07-19 | Lions Eye Institute Of Western Australia Inc. | Method and apparatus for homogenizing a collimated light beam |
JP2002025933A (ja) * | 2001-04-04 | 2002-01-25 | Sumitomo Heavy Ind Ltd | ビームホモジナイザ及び半導体薄膜作製方法 |
DE102008033358A1 (de) * | 2007-07-19 | 2009-02-26 | Coherent Gmbh | Vorrichtung und Verfahren zur Umverteilung des Strahlparameter-Produktes eines Laserstrahls |
JP2011216863A (ja) * | 2010-03-17 | 2011-10-27 | Hitachi Via Mechanics Ltd | ビームサイズ可変照明光学装置及びビームサイズ変更方法 |
Also Published As
Publication number | Publication date |
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DE102017115964B4 (de) | 2020-04-02 |
CN109254408B (zh) | 2022-04-19 |
TWI697162B (zh) | 2020-06-21 |
CN109254408A (zh) | 2019-01-22 |
KR102524153B1 (ko) | 2023-04-24 |
US20190018168A1 (en) | 2019-01-17 |
US11105961B2 (en) | 2021-08-31 |
TW201909502A (zh) | 2019-03-01 |
EP3428713A1 (de) | 2019-01-16 |
DE102017115964A1 (de) | 2019-01-17 |
KR20190008136A (ko) | 2019-01-23 |
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