WO2009019006A3 - Device and method for reducing speckle in the field of laser applications - Google Patents
Device and method for reducing speckle in the field of laser applications Download PDFInfo
- Publication number
- WO2009019006A3 WO2009019006A3 PCT/EP2008/006472 EP2008006472W WO2009019006A3 WO 2009019006 A3 WO2009019006 A3 WO 2009019006A3 EP 2008006472 W EP2008006472 W EP 2008006472W WO 2009019006 A3 WO2009019006 A3 WO 2009019006A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- laser
- field
- laser applications
- reducing speckle
- beam axis
- Prior art date
Links
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/008—Methods or devices for eye surgery using laser
- A61F9/00802—Methods or devices for eye surgery using laser for photoablation
- A61F9/00804—Refractive treatments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/008—Methods or devices for eye surgery using laser
- A61F9/00802—Methods or devices for eye surgery using laser for photoablation
- A61F9/00814—Laser features or special beam parameters therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/008—Methods or devices for eye surgery using laser
- A61F9/00802—Methods or devices for eye surgery using laser for photoablation
- A61F9/00817—Beam shaping with masks
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/008—Methods or devices for eye surgery using laser
- A61F2009/00861—Methods or devices for eye surgery using laser adapted for treatment at a particular location
- A61F2009/00872—Cornea
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/008—Methods or devices for eye surgery using laser
- A61F9/00802—Methods or devices for eye surgery using laser for photoablation
- A61F9/00804—Refractive treatments
- A61F9/00806—Correction of higher orders
-
- 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
-
- 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
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/08018—Mode suppression
- H01S3/0804—Transverse or lateral modes
-
- 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
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/08059—Constructional details of the reflector, e.g. shape
-
- 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
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/22—Gases
- H01S3/223—Gases the active gas being polyatomic, i.e. containing two or more atoms
- H01S3/225—Gases the active gas being polyatomic, i.e. containing two or more atoms comprising an excimer or exciplex
Landscapes
- Health & Medical Sciences (AREA)
- Optics & Photonics (AREA)
- Physics & Mathematics (AREA)
- Ophthalmology & Optometry (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Lasers (AREA)
Abstract
The present invention relates to a device for improving the laser beam quality for machining applications, comprising a laser (1) having an asymmetrical beam profile, comprising a first, short beam axis (20), a second, long beam axis (30), wherein the laser (1) comprises at least one optical element (10) and/or one resonator mirror (11) having a cylindrical mirror surface (13) for reducing spatial coherence and/or increasing the divergence in the short beam axis.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007036988 | 2007-08-06 | ||
DE102007036988.5 | 2007-08-06 | ||
DE102008035898A DE102008035898A1 (en) | 2007-08-06 | 2008-07-31 | Apparatus and method for reducing speckling in the field of laser applications |
DE102008035898.3 | 2008-07-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2009019006A2 WO2009019006A2 (en) | 2009-02-12 |
WO2009019006A3 true WO2009019006A3 (en) | 2009-04-16 |
Family
ID=40227130
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/006472 WO2009019006A2 (en) | 2007-08-06 | 2008-08-06 | Device and method for reducing speckle in the field of laser applications |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102008035898A1 (en) |
WO (1) | WO2009019006A2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011102166A1 (en) * | 2011-05-20 | 2012-11-22 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for homogenizing the laser beam profile in processes using a liquid jet laser and corresponding device |
CN107851955A (en) * | 2015-08-19 | 2018-03-27 | 极光先进雷射株式会社 | Laser aid |
EP3364924B1 (en) | 2015-10-21 | 2021-06-16 | AMO Development, LLC | Laser beam calibration and beam quality measurement in laser surgery systems |
DE102022103899A1 (en) | 2022-02-18 | 2023-08-24 | Schwind Eye-Tech-Solutions Gmbh | Treatment device for eye treatment, method, computer program and computer-readable medium |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0472727A1 (en) * | 1989-05-18 | 1992-03-04 | Kabushiki Kaisha Komatsu Seisakusho | Narrow-band oscillation excimer laser |
DE4225781A1 (en) * | 1992-08-04 | 1994-02-10 | Lambda Physik Gmbh | Excimer laser with unstable optical resonator - has concave rear mirror and cylindrical output mirror contg. internal face of concave shape to produce divergence of laser beams in perpendicular directions which approach one another |
JPH10106927A (en) * | 1996-10-01 | 1998-04-24 | Canon Inc | Aligner and device manufacturing method |
WO1999001915A1 (en) * | 1997-07-01 | 1999-01-14 | Cymer, Inc. | Very narrow band laser with unstable resonance cavity |
EP1722450A1 (en) * | 2005-05-12 | 2006-11-15 | Innovavent GmbH | Anamorphic solid state disk laser |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5684822A (en) | 1994-11-17 | 1997-11-04 | Cymer, Inc. | Laser system with anamorphic confocal unstable resonator |
US5946337A (en) | 1998-04-29 | 1999-08-31 | Lambda Physik Gmbh | Hybrid laser resonator with special line narrowing |
SE0202584D0 (en) | 2002-09-02 | 2002-09-02 | Micronic Laser Systems Ab | A method and device for coherence reduction |
-
2008
- 2008-07-31 DE DE102008035898A patent/DE102008035898A1/en not_active Withdrawn
- 2008-08-06 WO PCT/EP2008/006472 patent/WO2009019006A2/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0472727A1 (en) * | 1989-05-18 | 1992-03-04 | Kabushiki Kaisha Komatsu Seisakusho | Narrow-band oscillation excimer laser |
DE4225781A1 (en) * | 1992-08-04 | 1994-02-10 | Lambda Physik Gmbh | Excimer laser with unstable optical resonator - has concave rear mirror and cylindrical output mirror contg. internal face of concave shape to produce divergence of laser beams in perpendicular directions which approach one another |
JPH10106927A (en) * | 1996-10-01 | 1998-04-24 | Canon Inc | Aligner and device manufacturing method |
WO1999001915A1 (en) * | 1997-07-01 | 1999-01-14 | Cymer, Inc. | Very narrow band laser with unstable resonance cavity |
EP1722450A1 (en) * | 2005-05-12 | 2006-11-15 | Innovavent GmbH | Anamorphic solid state disk laser |
Also Published As
Publication number | Publication date |
---|---|
DE102008035898A1 (en) | 2009-02-12 |
WO2009019006A2 (en) | 2009-02-12 |
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