GB1197123A - Gas Coherent Radiation Generator and Discharge Tube Therefor - Google Patents

Gas Coherent Radiation Generator and Discharge Tube Therefor

Info

Publication number
GB1197123A
GB1197123A GB2290768A GB2290768A GB1197123A GB 1197123 A GB1197123 A GB 1197123A GB 2290768 A GB2290768 A GB 2290768A GB 2290768 A GB2290768 A GB 2290768A GB 1197123 A GB1197123 A GB 1197123A
Authority
GB
United Kingdom
Prior art keywords
gas
bores
tube
discharge tube
discharge
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
GB2290768A
Inventor
Albert Mason Rockwell Jr
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.)
Laser Science Inc
Original Assignee
Laser Science Inc
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 Laser Science Inc filed Critical Laser Science Inc
Publication of GB1197123A publication Critical patent/GB1197123A/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
    • H01S3/02—Constructional details
    • H01S3/04—Arrangements for thermal management
    • H01S3/041—Arrangements for thermal management for gas 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
    • H01S3/02—Constructional details
    • H01S3/03—Constructional details of gas laser discharge tubes
    • H01S3/032—Constructional details of gas laser discharge tubes for confinement of the discharge, e.g. by special features of the discharge constricting tube

Landscapes

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

Abstract

1,197,123. Lasers. LASER SCIENCES Inc. 14 May, 1968 [29 May, 1967], No. 22907/68. Heading H1C. A gaseous active medium, e.g. Krypton, is contained in a discharge tube formed by a stack of ceramic segments 23, Fig. 5, each having at least two bores 24, 26, the segments being joined together with one bore 24 in each segment aligned so as to form a gas discharge path, the other bores, which need not be aligned, providing a return path for equalizing the gas pressure. The ceramic segments have their plane facing surfaces formed with a copper layer and are secured together to provide a sealed gas enclosure by welding a copper annulus 27 in position between each pair of segments. The annulus 27 has an aperture sufficiently large as to not obstruct the gas return path and also to avoid sputtering, and may be formed with cooling fins, Fig. 7, which are canted so as to create turbulence in a fluid coolant passed over the surface of the tube. In the arrangement described a total of four bores 26 in each segment provide gas return paths, these bores being joined by slots to an axial discharge bore 24 as shown in Fig. 4. A complete laser assembly is shown in Fig. 1 in which the discharge tube is secured to copper supports 36, 37 by welding, the tube and supports being mounted between a cathode 21 and an anode 22, both with apertures. The generated radiation passes to external reflectors 16, 17 through Brewster-angle optical windows 52, 56 which are mounted on tubular members 53, 57. A viewing port 62 for the gas discharge is provided. Assistance in confining the gas discharge to an axial passage 13 through the aligned bores 24 is provided by an axial magnetic field produced by an energized coil 82. Cooling of the electrodes and gas discharge tube is effected by a fluid coolant such as air or water passed between inlet and outlet ports 80, 81, these ports being coupled to a coolant space between the discharge tube and a coaxial glass jacket 64 by passageways 77, 79. Constrictions 75 are formed in the glass tube for promoting fluid turbulence.
GB2290768A 1967-05-29 1968-05-14 Gas Coherent Radiation Generator and Discharge Tube Therefor Expired GB1197123A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US64196567A 1967-05-29 1967-05-29

Publications (1)

Publication Number Publication Date
GB1197123A true GB1197123A (en) 1970-07-01

Family

ID=24574592

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2290768A Expired GB1197123A (en) 1967-05-29 1968-05-14 Gas Coherent Radiation Generator and Discharge Tube Therefor

Country Status (3)

Country Link
DE (1) DE1764359C3 (en)
FR (1) FR1570768A (en)
GB (1) GB1197123A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4752936A (en) * 1984-11-15 1988-06-21 Carl-Zeiss-Stiftung Gas laser, particularly ion laser
EP1323216A1 (en) * 2000-10-06 2003-07-02 Cymer, Inc. Very narrow band, two chamber, high rep rate gas discharge laser system
EP1438774A2 (en) * 2001-08-29 2004-07-21 Cymer, Inc. Very narrow band, two chamber, high rep rate gas discharge laser system
EP1458066A2 (en) * 2001-08-29 2004-09-15 Cymer, Inc. Line selected F2 two chamber laser system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626325A (en) * 1969-11-10 1971-12-07 Britt Electronic Poducts Corp Pulsed gas laser with radiation cooling
EP0163169A3 (en) * 1984-06-01 1986-12-30 Siemens Aktiengesellschaft Air-cooled discharge tube for a gas laser, and its application
US4698818A (en) * 1985-09-30 1987-10-06 Siemens Aktiengesellschaft Air-cooled discharge tube for an ion laser

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4752936A (en) * 1984-11-15 1988-06-21 Carl-Zeiss-Stiftung Gas laser, particularly ion laser
US7567607B2 (en) 1999-12-10 2009-07-28 Cymer, Inc. Very narrow band, two chamber, high rep-rate gas discharge laser system
EP1323216A1 (en) * 2000-10-06 2003-07-02 Cymer, Inc. Very narrow band, two chamber, high rep rate gas discharge laser system
EP1323216A4 (en) * 2000-10-06 2006-03-22 Cymer Inc Very narrow band, two chamber, high rep rate gas discharge laser system
EP1438774A2 (en) * 2001-08-29 2004-07-21 Cymer, Inc. Very narrow band, two chamber, high rep rate gas discharge laser system
EP1458066A2 (en) * 2001-08-29 2004-09-15 Cymer, Inc. Line selected F2 two chamber laser system
EP1438774A4 (en) * 2001-08-29 2006-03-08 Cymer Inc Very narrow band, two chamber, high rep rate gas discharge laser system
EP1458066A3 (en) * 2001-08-29 2006-04-19 Cymer, Inc. Line selected F2 two chamber laser system

Also Published As

Publication number Publication date
DE1764359B2 (en) 1977-08-11
FR1570768A (en) 1969-06-13
DE1764359C3 (en) 1978-04-20
DE1764359A1 (en) 1971-07-15

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PLNP Patent lapsed through nonpayment of renewal fees