GB1256398A - Improvements in or relating to gas lasers - Google Patents

Improvements in or relating to gas lasers

Info

Publication number
GB1256398A
GB1256398A GB4744269A GB4744269A GB1256398A GB 1256398 A GB1256398 A GB 1256398A GB 4744269 A GB4744269 A GB 4744269A GB 4744269 A GB4744269 A GB 4744269A GB 1256398 A GB1256398 A GB 1256398A
Authority
GB
United Kingdom
Prior art keywords
gas
laser
tube
pump
catalyst
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
GB4744269A
Inventor
John Walton Jones
Brian Patrick Hale
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.)
Allard Way Holdings Ltd
Original Assignee
Elliott Brothers London Ltd
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 Elliott Brothers London Ltd filed Critical Elliott Brothers London Ltd
Priority to GB4744269A priority Critical patent/GB1256398A/en
Publication of GB1256398A publication Critical patent/GB1256398A/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
    • H01S3/05—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
    • H01S3/086—One or more reflectors having variable properties or positions for initial adjustment of the resonator
    • 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
    • H01S3/02—Constructional details
    • H01S3/03—Constructional details of gas laser discharge tubes
    • H01S3/034—Optical devices within, or forming part of, the tube, e.g. windows, mirrors
    • 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
    • H01S3/02—Constructional details
    • H01S3/03—Constructional details of gas laser discharge tubes
    • H01S3/036—Means for obtaining or maintaining the desired gas pressure within the tube, e.g. by gettering, replenishing; Means for circulating the gas, e.g. for equalising the pressure within the tube
    • 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
    • H01S3/06—Construction or shape of active medium
    • H01S3/07—Construction or shape of active medium consisting of a plurality of parts, e.g. segments
    • H01S3/073—Gas lasers comprising separate discharge sections in one cavity, e.g. hybrid lasers
    • H01S3/076—Folded-path lasers
    • 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
    • H01S3/081—Construction or shape of optical resonators or components thereof comprising three or more reflectors

Landscapes

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

Abstract

1,256,398. Lasers. ELLIOTT BROS (LONDON) Ltd. 24 Sept., 1970 [26 Sept., 1969], No. 47442/69. Heading H1C. In a gas, e.g. CO 2 , laser, dissociation of the gas during operation is overcome by circulating the gas over a reassociating catalyst. A circulating system for a gas laser 10 is shown in Fig. 2, and comprises laser inlet and outlet gas ports 52, 54 respectively connected to flow control valves 70, 56, a heating device 58 for raising the gas temperature to enhance reassociation in a catalyst chamber 60, and a cooling device 62 for reducing the gas temperature to that required for laser operation. The gas is circulated by a pump 64 which is followed by a further cooling device 66 to remove gas temperature rise occurring within the pump. Gas control taps 68, 84, 88 are provided in the system to enable the laser tube 18, Fig. 1, to be initially evacuated by a pump 86, and the required proportions of CO 2 , He and N 2 to be introduced in the system from pressurized gas storage devices 72, 74, 76, through flow control valves 78, 80, 82. Option - ally the system may use either the same gas mixture continuously or the gases may be replaced from the storage devices during operation. The catalyst chamber 60, Fig. 3 (not shown), comprises a honeycomb matrix of alumina coated with finely divided platinum as the catalyst over which the gas flows. The laser tube 18, Fig. 1, extends between electrodes 20, 22, 24 energized either from a D.C. source 42 or by A.C. Alternatively the laser gas may be optically pumped by a flash tube. Adjustable mirrors 14, 16 are coupled to the ends of the tube by bellows 30, 32, semitransparent mirror 16 being formed of germanium. A folded laser construction is also described, Fig. 4 (not shown).
GB4744269A 1969-09-26 1969-09-26 Improvements in or relating to gas lasers Expired GB1256398A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4744269A GB1256398A (en) 1969-09-26 1969-09-26 Improvements in or relating to gas lasers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4744269A GB1256398A (en) 1969-09-26 1969-09-26 Improvements in or relating to gas lasers

Publications (1)

Publication Number Publication Date
GB1256398A true GB1256398A (en) 1971-12-08

Family

ID=10444979

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4744269A Expired GB1256398A (en) 1969-09-26 1969-09-26 Improvements in or relating to gas lasers

Country Status (1)

Country Link
GB (1) GB1256398A (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3970957A (en) * 1973-10-23 1976-07-20 Boc Limited Flowing gas laser gas regeneration system
US3992685A (en) 1972-09-05 1976-11-16 Trw Systems & Energy Chemical laser pump
FR2337538A1 (en) * 1976-01-07 1977-08-05 Mochida Pharm Co Ltd LASER FOR SURGICAL OPERATIONS
DE3148570A1 (en) * 1981-12-08 1983-06-23 Eltro GmbH, Gesellschaft für Strahlungstechnik, 6900 Heidelberg METHOD AND DEVICE FOR OPERATING A CO (ARROW DOWN) 2 (ARROW DOWN) GAS LASER
US4509176A (en) * 1981-06-17 1985-04-02 Selenia Industrie Elettroniche Associate S.P.A. Longitudinal-discharge-pulse laser with preionization obtained by corona effect
FR2557742A1 (en) * 1983-12-29 1985-07-05 Amada Eng & Service GAS LASER OSCILLATOR OF THE FAST AXIAL CIRCULATION TYPE
US4660209A (en) * 1983-12-29 1987-04-21 Amada Engineering & Service Co., Inc. High speed axial flow type gas laser oscillator
GB2195202A (en) * 1983-12-29 1988-03-30 Amada Eng & Service High-speed axial flow type gas laser oscillator
US4756000A (en) * 1987-02-18 1988-07-05 Macken John A Discharge driven gold catalyst with application to a CO2 laser
US4757512A (en) * 1987-02-18 1988-07-12 Macken John A Discharge driven silver oxide catalyst with application to a CO2 laser
US4794613A (en) * 1987-07-27 1988-12-27 Prc Corporation Laser fluid flow control apparatus and method
US4868841A (en) * 1988-06-13 1989-09-19 Hughes Aircraft Company Directly heated ceramic catalyst support
US4897848A (en) * 1988-01-29 1990-01-30 John Macken Discharge driven precious metal catalyst with application to carbon monoxide lasers
US5020069A (en) * 1989-12-18 1991-05-28 Hughes Aircraft Company Platinum catalyst for forming carbon dioxide
US5043997A (en) * 1985-05-03 1991-08-27 Raytheon Company Hybrid cathode
US5771259A (en) * 1996-11-08 1998-06-23 Dvorkin; Lev P. Laser electrode coating
EP1386377A1 (en) * 2001-05-11 2004-02-04 Cymer, Inc. Gas discharge laser with improved beam path
US7469000B2 (en) 2006-11-22 2008-12-23 Universal Laser Systems, Inc. Gas lasers including nanoscale catalysts and methods for producing such lasers
US7488229B2 (en) 1999-06-08 2009-02-10 Oridion Medical (1987) Ltd. Spectrally stable infra red discharge lamps
WO2015113843A1 (en) * 2014-01-31 2015-08-06 Asml Netherlands B.V. Catalytic conversion of an optical amplifier gas medium
CN105098572A (en) * 2015-09-23 2015-11-25 江苏卓远激光科技有限公司 Lens fine-tuning base for laser device

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3992685A (en) 1972-09-05 1976-11-16 Trw Systems & Energy Chemical laser pump
US3970957A (en) * 1973-10-23 1976-07-20 Boc Limited Flowing gas laser gas regeneration system
FR2337538A1 (en) * 1976-01-07 1977-08-05 Mochida Pharm Co Ltd LASER FOR SURGICAL OPERATIONS
US4509176A (en) * 1981-06-17 1985-04-02 Selenia Industrie Elettroniche Associate S.P.A. Longitudinal-discharge-pulse laser with preionization obtained by corona effect
DE3148570A1 (en) * 1981-12-08 1983-06-23 Eltro GmbH, Gesellschaft für Strahlungstechnik, 6900 Heidelberg METHOD AND DEVICE FOR OPERATING A CO (ARROW DOWN) 2 (ARROW DOWN) GAS LASER
FR2557742A1 (en) * 1983-12-29 1985-07-05 Amada Eng & Service GAS LASER OSCILLATOR OF THE FAST AXIAL CIRCULATION TYPE
US4660209A (en) * 1983-12-29 1987-04-21 Amada Engineering & Service Co., Inc. High speed axial flow type gas laser oscillator
GB2195202A (en) * 1983-12-29 1988-03-30 Amada Eng & Service High-speed axial flow type gas laser oscillator
US5043997A (en) * 1985-05-03 1991-08-27 Raytheon Company Hybrid cathode
US4756000A (en) * 1987-02-18 1988-07-05 Macken John A Discharge driven gold catalyst with application to a CO2 laser
US4757512A (en) * 1987-02-18 1988-07-12 Macken John A Discharge driven silver oxide catalyst with application to a CO2 laser
US4794613A (en) * 1987-07-27 1988-12-27 Prc Corporation Laser fluid flow control apparatus and method
US4897848A (en) * 1988-01-29 1990-01-30 John Macken Discharge driven precious metal catalyst with application to carbon monoxide lasers
US4868841A (en) * 1988-06-13 1989-09-19 Hughes Aircraft Company Directly heated ceramic catalyst support
US5020069A (en) * 1989-12-18 1991-05-28 Hughes Aircraft Company Platinum catalyst for forming carbon dioxide
US5771259A (en) * 1996-11-08 1998-06-23 Dvorkin; Lev P. Laser electrode coating
US7488229B2 (en) 1999-06-08 2009-02-10 Oridion Medical (1987) Ltd. Spectrally stable infra red discharge lamps
EP1386377A1 (en) * 2001-05-11 2004-02-04 Cymer, Inc. Gas discharge laser with improved beam path
EP1386377A4 (en) * 2001-05-11 2006-03-29 Cymer Inc Gas discharge laser with improved beam path
US7469000B2 (en) 2006-11-22 2008-12-23 Universal Laser Systems, Inc. Gas lasers including nanoscale catalysts and methods for producing such lasers
WO2015113843A1 (en) * 2014-01-31 2015-08-06 Asml Netherlands B.V. Catalytic conversion of an optical amplifier gas medium
US9209595B2 (en) 2014-01-31 2015-12-08 Asml Netherlands B.V. Catalytic conversion of an optical amplifier gas medium
CN105940576A (en) * 2014-01-31 2016-09-14 Asml荷兰有限公司 Catalytic conversion of an optical amplifier gas medium
JP2017506816A (en) * 2014-01-31 2017-03-09 エーエスエムエル ネザーランズ ビー．ブイ． Catalytic conversion of optically amplified gas media
CN105098572A (en) * 2015-09-23 2015-11-25 江苏卓远激光科技有限公司 Lens fine-tuning base for laser device

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