GB2006515A - Laser apparatus - Google Patents

Laser apparatus

Info

Publication number
GB2006515A
GB2006515A GB7838072A GB7838072A GB2006515A GB 2006515 A GB2006515 A GB 2006515A GB 7838072 A GB7838072 A GB 7838072A GB 7838072 A GB7838072 A GB 7838072A GB 2006515 A GB2006515 A GB 2006515A
Authority
GB
United Kingdom
Prior art keywords
laser
cavity
laser apparatus
rotatable
reflectivity
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.)
Granted
Application number
GB7838072A
Other versions
GB2006515B (en
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB7838072A priority Critical patent/GB2006515B/en
Publication of GB2006515A publication Critical patent/GB2006515A/en
Application granted granted Critical
Publication of GB2006515B publication Critical patent/GB2006515B/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
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/105—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length
    • 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
    • B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
    • B23K26/066—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms by using masks

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Printer (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Laser Beam Processing (AREA)

Abstract

A laser apparatus in which the totally reflecting mirror of a laser cavity 1 is replaced by a surface 6, the reflectivity of which can be varied to alter the level of lasing activity in the cavity, and hence modulate the output 9 from the laser. In a form of the apparatus for producing printing rolls, the surface 6 is rotatable and carries a design to be reproduced on a rotatable workpiece 8. <IMAGE>
GB7838072A 1977-10-18 1978-09-25 Laser apparatus Expired GB2006515B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7838072A GB2006515B (en) 1977-10-18 1978-09-25 Laser apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4335777 1977-10-18
GB7838072A GB2006515B (en) 1977-10-18 1978-09-25 Laser apparatus

Publications (2)

Publication Number Publication Date
GB2006515A true GB2006515A (en) 1979-05-02
GB2006515B GB2006515B (en) 1982-03-03

Family

ID=26265119

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7838072A Expired GB2006515B (en) 1977-10-18 1978-09-25 Laser apparatus

Country Status (1)

Country Link
GB (1) GB2006515B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4519708A (en) * 1981-05-20 1985-05-28 Raytheon Company Mode discrimination apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4519708A (en) * 1981-05-20 1985-05-28 Raytheon Company Mode discrimination apparatus

Also Published As

Publication number Publication date
GB2006515B (en) 1982-03-03

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee