GB1423632A - Method for the precise machining of workpieces by means of laser beams and apparatus for performing the method - Google Patents

Method for the precise machining of workpieces by means of laser beams and apparatus for performing the method

Info

Publication number
GB1423632A
GB1423632A GB1885873A GB1885873A GB1423632A GB 1423632 A GB1423632 A GB 1423632A GB 1885873 A GB1885873 A GB 1885873A GB 1885873 A GB1885873 A GB 1885873A GB 1423632 A GB1423632 A GB 1423632A
Authority
GB
United Kingdom
Prior art keywords
polarisation
laser
analyer
workpiece
quarter wave
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1885873A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PIERRES HOLDING
Original Assignee
PIERRES HOLDING
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by PIERRES HOLDING filed Critical PIERRES HOLDING
Publication of GB1423632A publication Critical patent/GB1423632A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01S3/0064—Anti-reflection devices, e.g. optical isolaters
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Laser Beam Processing (AREA)
  • Lasers (AREA)

Abstract

1423632 Lasers PIERRES HOLDING SA 18 April 1973 [20 April 1972] 18858/73 Heading H1C To prevent radiation reflected from a workpiece from interfering with the operation of a pulsed laser in a machining system using a laser beam, the radiation incident on the workpiece is linearly polarised so that radiation reflected back towards the laser is suppressed by an analyser in the laser beam path. As shown a laser 1 comprises a ruby rod 4, resonator mirrors 2, 3 and a Brewster-angled glass plate 5 which imparts linear polarisation, the rod being pumped by pulsed energy, e.g. from a gas discharge lamp (not shown). The output radiation is passed through a polarisation analyer 7, a quarter wave plate 8 and a focusing lens 9 to a metal or jewel workpiece 10, the linear polarisation 18 being passed by the analyer and converted into circular polarisation 20 by the quarter wave plate. Upon reflection the direction of circular polarisation 22 is reversed, and the quarter wave plate converts the circular polarisation to linear polarisation 23 then suppressed by the analyer which may be a Glan-Thompson or a Wollaston prism. In a modification the Brewster-angled plate 5 is omitted and the ruby laser is internally arranged to generate a linearly polarised output.
GB1885873A 1972-04-20 1973-04-18 Method for the precise machining of workpieces by means of laser beams and apparatus for performing the method Expired GB1423632A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH583572A CH550646A (en) 1972-04-20 1972-04-20 METHOD FOR PRECISE MACHINING OF WORKPIECES USING LASER RADIOS AND DEVICE FOR PERFORMING THE METHOD.
CH582572 1972-04-20

Publications (1)

Publication Number Publication Date
GB1423632A true GB1423632A (en) 1976-02-04

Family

ID=25698440

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1885873A Expired GB1423632A (en) 1972-04-20 1973-04-18 Method for the precise machining of workpieces by means of laser beams and apparatus for performing the method

Country Status (6)

Country Link
CA (1) CA974600A (en)
CH (1) CH550646A (en)
DE (1) DE2319776A1 (en)
FR (1) FR2181000B1 (en)
GB (1) GB1423632A (en)
NL (1) NL7305500A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3114979A1 (en) * 1981-04-14 1982-10-28 Messer Griesheim Gmbh, 6000 Frankfurt Method and device for processing tools using a laser beam
WO2016026987A1 (en) * 2014-08-22 2016-02-25 Ceramtec-Etec Gmbh Method for manufacturing high-precision parts from transparent materials

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2647618C2 (en) * 1973-04-26 1986-03-27 Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen Equipment for material processing
DE2711889C3 (en) * 1977-03-18 1982-03-11 Kernforschungsanlage Juelich Gmbh, 5170 Juelich Process for excavating channels in workpieces with the aid of laser pulses and a device for carrying out this process
DE3126953C2 (en) * 1981-07-08 1983-07-21 Arnold, Peter, Dr., 8000 München Process for the thermal treatment of the surface of workpieces by means of a linearly polarized laser beam
DE3818504A1 (en) * 1988-05-31 1991-01-03 Fraunhofer Ges Forschung METHOD AND DEVICE FOR THE CRYSTALIZATION OF THIN SEMICONDUCTOR LAYERS ON A SUBSTRATE MATERIAL
JP3514129B2 (en) * 1998-07-22 2004-03-31 スズキ株式会社 Laser processing equipment

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1585293A (en) * 1968-09-30 1970-01-16

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3114979A1 (en) * 1981-04-14 1982-10-28 Messer Griesheim Gmbh, 6000 Frankfurt Method and device for processing tools using a laser beam
WO2016026987A1 (en) * 2014-08-22 2016-02-25 Ceramtec-Etec Gmbh Method for manufacturing high-precision parts from transparent materials

Also Published As

Publication number Publication date
CA974600A (en) 1975-09-16
FR2181000A1 (en) 1973-11-30
FR2181000B1 (en) 1977-04-29
NL7305500A (en) 1973-10-23
CH550646A (en) 1974-06-28
DE2319776A1 (en) 1973-10-25

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees