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GB1448676A - Stabilised laser - Google Patents

Stabilised laser

Info

Publication number
GB1448676A
GB1448676A GB167573A GB167573A GB1448676A GB 1448676 A GB1448676 A GB 1448676A GB 167573 A GB167573 A GB 167573A GB 167573 A GB167573 A GB 167573A GB 1448676 A GB1448676 A GB 1448676A
Authority
GB
United Kingdom
Prior art keywords
laser
output
intensity
parameter
control signal
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
GB167573A
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 Secretary of State for Industry
Original Assignee
UK Secretary of State for Industry
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 Secretary of State for Industry filed Critical UK Secretary of State for Industry
Priority to GB167573A priority Critical patent/GB1448676A/en
Publication of GB1448676A publication Critical patent/GB1448676A/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
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/131—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
    • H01S3/1317—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the temperature

Landscapes

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

Abstract

1448676 Lasers INDUSTRY SECRETARY OF STATE FOR 18 Feb 1974 [12 Jan 1973] 1675/73 Heading H1C In an apparatus for maintaining constant a parameter, e.g. wavelength or intensity, of the optical output of a laser a heating or cooling arrangement independent of any means for optically exciting the laser is controlled in dependence upon intensity changes in the laser output to maintain constant the parameter. As shown, a portion of the laser output generates a control signal from an amplifier and power transistor, and this signal is fed back to a heater or Peltier heater/cooler. The control signal may be derived from the difference between signals representative of the intensity corresponding to respective polarization planes in the output, the separation of the planes being effected by a polarizing beam-splitter Fig. 2 (not shown).
GB167573A 1973-01-12 1973-01-12 Stabilised laser Expired GB1448676A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB167573A GB1448676A (en) 1973-01-12 1973-01-12 Stabilised laser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB167573A GB1448676A (en) 1973-01-12 1973-01-12 Stabilised laser

Publications (1)

Publication Number Publication Date
GB1448676A true GB1448676A (en) 1976-09-08

Family

ID=9726081

Family Applications (1)

Application Number Title Priority Date Filing Date
GB167573A Expired GB1448676A (en) 1973-01-12 1973-01-12 Stabilised laser

Country Status (1)

Country Link
GB (1) GB1448676A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2326793A1 (en) * 1975-10-03 1977-04-29 Zeiss Jena Veb Carl Laser frequency and mode stabilization network - uses heating element which slightly alters laser geometry with temperature change
DE3221185A1 (en) * 1981-05-29 1983-03-31 Norman Theodore Oakland Calif. Seaton CONTROL UNIT FOR A LASER
EP0091068A1 (en) * 1982-04-06 1983-10-12 Firma Carl Zeiss Beam divider
FR2563952A1 (en) * 1984-05-02 1985-11-08 Zeiss Jena Veb Carl Gas laser with interior mirror having high stability of yield
US4671624A (en) * 1985-03-25 1987-06-09 Hughes Aircraft Company Variable lens and birefringence compensator for continuous operation
WO1988001799A1 (en) * 1986-08-30 1988-03-10 Renishaw Plc Frequency stabilised laser and control system therefor
WO1988001798A1 (en) * 1986-08-30 1988-03-10 Renishaw Plc Pre-heat control system for a laser

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2326793A1 (en) * 1975-10-03 1977-04-29 Zeiss Jena Veb Carl Laser frequency and mode stabilization network - uses heating element which slightly alters laser geometry with temperature change
DE3221185A1 (en) * 1981-05-29 1983-03-31 Norman Theodore Oakland Calif. Seaton CONTROL UNIT FOR A LASER
US4468773A (en) * 1981-05-29 1984-08-28 Seaton Norman T Laser control apparatus and method
EP0091068A1 (en) * 1982-04-06 1983-10-12 Firma Carl Zeiss Beam divider
FR2563952A1 (en) * 1984-05-02 1985-11-08 Zeiss Jena Veb Carl Gas laser with interior mirror having high stability of yield
US4671624A (en) * 1985-03-25 1987-06-09 Hughes Aircraft Company Variable lens and birefringence compensator for continuous operation
WO1988001799A1 (en) * 1986-08-30 1988-03-10 Renishaw Plc Frequency stabilised laser and control system therefor
WO1988001798A1 (en) * 1986-08-30 1988-03-10 Renishaw Plc Pre-heat control system for a laser

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee