GB1179057A - Stabilised gas pressure laser. - Google Patents

Stabilised gas pressure laser.

Info

Publication number
GB1179057A
GB1179057A GB1738268A GB1738268A GB1179057A GB 1179057 A GB1179057 A GB 1179057A GB 1738268 A GB1738268 A GB 1738268A GB 1738268 A GB1738268 A GB 1738268A GB 1179057 A GB1179057 A GB 1179057A
Authority
GB
United Kingdom
Prior art keywords
laser
laser tube
graphite
gas
gas pressure
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
GB1738268A
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.)
Alcatel Lucent SAS
Original Assignee
Compagnie Generale dElectricite SA
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 Compagnie Generale dElectricite SA filed Critical Compagnie Generale dElectricite SA
Publication of GB1179057A publication Critical patent/GB1179057A/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
    • H01S3/03—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
    • H01S3/10—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
    • H01S3/134—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 in gas lasers

Landscapes

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

Abstract

1,179,057. Lasers. COMPAGNIE GENERALE D'ELECTRICITE. 10 April, 1968 [19 April, 1967], No. 17382/68. Heading H1C. [Also in Division G3] A gaseous laser has its gas pressure stabilized by providing a controllable gas absorption medium 13 in a conduit 17, 18 which couples the ends of the laser tube 3. The gas absorption medium 13 consists of graphite granules contained between finely-perforated walls 14, 15 in a chamber 12, the graphite being gasabsorbent when cooled and desorbent when heated. The laser gas, e.g. argon, has its pressure measured by a Pirani gauge 19 which is coupled to a control member 22, this member selectively operating an electric resistance heater or a cooling circuit (both not shown) respectively associated with an adjustable voltage source 21 and a pumping arrangement 20. The laser tube has double walls 6 through which circulates a liquid refrigerant between end pipes 7, 8 and has inclined windows 3. The resonator comprises external plane mirrors 1, 2. The laser tube contains ring-shaped electrodes 9, 10 together with alternate graphite and ceramic rings 4, 5 providing thermal insulation. The conduit 17, 18 equalizes the gas pressure at the two ends of the laser tube. Reference has been directed by the Comptroller to Specification 1,044,999.
GB1738268A 1967-04-19 1968-04-10 Stabilised gas pressure laser. Expired GB1179057A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR103370A FR1527988A (en) 1967-04-19 1967-04-19 Pressure stabilized gas lasers

Publications (1)

Publication Number Publication Date
GB1179057A true GB1179057A (en) 1970-01-28

Family

ID=8629204

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1738268A Expired GB1179057A (en) 1967-04-19 1968-04-10 Stabilised gas pressure laser.

Country Status (7)

Country Link
BE (1) BE713226A (en)
CH (1) CH472791A (en)
DE (1) DE1764189A1 (en)
FR (1) FR1527988A (en)
GB (1) GB1179057A (en)
LU (1) LU55851A1 (en)
NL (1) NL6804974A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117558A (en) * 1982-03-31 1983-10-12 Coherent Inc High power fundamental mode laser
GB2171244A (en) * 1982-06-28 1986-08-20 Comp Generale Electricite Hydrochloric acid chemical laser
GB2181869A (en) * 1983-05-06 1987-04-29 Coherent Inc Pressure regulating system for lasers

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD124942A1 (en) * 1975-12-22 1977-03-23
DD134415A1 (en) * 1977-07-11 1979-02-21 Manfred Poehler GAS DISCHARGING TUBES FOR STIMULATING MEDIA, PREFERABLY FOR OPTICAL TRANSMITTERS OR AMPLIFIERS
EP0004190A1 (en) * 1978-03-13 1979-09-19 Xerox Corporation A gas laser
GB9011535D0 (en) * 1990-05-23 1990-07-11 Oxford Lasers Ltd Gas management system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117558A (en) * 1982-03-31 1983-10-12 Coherent Inc High power fundamental mode laser
GB2171244A (en) * 1982-06-28 1986-08-20 Comp Generale Electricite Hydrochloric acid chemical laser
GB2181869A (en) * 1983-05-06 1987-04-29 Coherent Inc Pressure regulating system for lasers

Also Published As

Publication number Publication date
CH472791A (en) 1969-05-15
BE713226A (en) 1968-10-04
NL6804974A (en) 1968-10-21
DE1764189A1 (en) 1971-06-03
FR1527988A (en) 1968-06-07
LU55851A1 (en) 1969-11-13

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