GB1035426A - Pulsed gas laser with separate focussing beam - Google Patents

Pulsed gas laser with separate focussing beam

Info

Publication number
GB1035426A
GB1035426A GB14341/65A GB1434165A GB1035426A GB 1035426 A GB1035426 A GB 1035426A GB 14341/65 A GB14341/65 A GB 14341/65A GB 1434165 A GB1434165 A GB 1434165A GB 1035426 A GB1035426 A GB 1035426A
Authority
GB
United Kingdom
Prior art keywords
laser
power source
visible
workpiece
source
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
GB14341/65A
Inventor
Robert Joseph Strain
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB14341/65A priority Critical patent/GB1035426A/en
Publication of GB1035426A publication Critical patent/GB1035426A/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
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/097—Processes or apparatus for excitation, e.g. pumping by gas discharge of a gas laser
    • 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
    • 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
    • B23K26/035—Aligning the laser beam

Landscapes

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

Abstract

1,035,426. Lasers. STANDARD TELEPHONES & CABLES Ltd. April 5, 1965, No. 14341/65. Heading H3B. To enable the output of a heliumneon laser 1 to be critically focused on a workpiece 14, the laser is first pumped by a continuous power source 11 so as to produce a visible output beam of insufficient power to affect the workpiece, and after focusing is carried out by relative adjustments of the laser, a focusing lens 13 and the workpiece, the laser is pumped by a pulse power source 12 of sufficient intensity to produce a high power infra-red output. The laser comprises a glass tube having windows 3, 4 at the Brewster angle, and is provided with electrodes 5, 6 and 7, 8 connected recpectively to a continuous R.F. power source 11 and a 25 kv. pulsed power source 12. Alternatively the R.F. source may be replaced by a D.C. source. The optical cavity is formed by a pair of confocal mirrors 9, 10 of which mirror 10 is partially transmitting, this mirror reflecting 98-99% of the incident light at the visible wavelength of 0À6328 Á and 90% at the infra-red wavelength of 1À153 Á. Focusing of the visible beam during the adjustment phase is observed through a protective filter 15. The visible light wavelength may be changed to 0À488 Á by including a trace of argon gas.
GB14341/65A 1965-04-05 1965-04-05 Pulsed gas laser with separate focussing beam Expired GB1035426A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB14341/65A GB1035426A (en) 1965-04-05 1965-04-05 Pulsed gas laser with separate focussing beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14341/65A GB1035426A (en) 1965-04-05 1965-04-05 Pulsed gas laser with separate focussing beam

Publications (1)

Publication Number Publication Date
GB1035426A true GB1035426A (en) 1966-07-06

Family

ID=10039445

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14341/65A Expired GB1035426A (en) 1965-04-05 1965-04-05 Pulsed gas laser with separate focussing beam

Country Status (1)

Country Link
GB (1) GB1035426A (en)

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