GB966455A - Devices for producing coherent electromagnetic radiation - Google Patents

Devices for producing coherent electromagnetic radiation

Info

Publication number
GB966455A
GB966455A GB999963A GB999963A GB966455A GB 966455 A GB966455 A GB 966455A GB 999963 A GB999963 A GB 999963A GB 999963 A GB999963 A GB 999963A GB 966455 A GB966455 A GB 966455A
Authority
GB
United Kingdom
Prior art keywords
pict
neodymium
quantities
coated
nitrogen
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
GB999963A
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.)
Raytheon Co
Original Assignee
Raytheon Co
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 Raytheon Co filed Critical Raytheon Co
Publication of GB966455A publication Critical patent/GB966455A/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
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/0915—Processes or apparatus for excitation, e.g. pumping using optical pumping by incoherent light
    • H01S3/092—Processes or apparatus for excitation, e.g. pumping using optical pumping by incoherent light of flash lamp
    • H01S3/093—Processes or apparatus for excitation, e.g. pumping using optical pumping by incoherent light of flash lamp focusing or directing the excitation energy into the active medium
    • H01S3/0931—Imaging pump cavity, e.g. elliptical
    • 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
    • H01S3/025—Constructional details of solid state lasers, e.g. housings or mountings
    • 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
    • H01S3/0407—Liquid cooling, e.g. by water

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Lasers (AREA)

Abstract

<PICT:0966455/C4-C5/1> <PICT:0966455/C4-C5/2> <PICT:0966455/C4-C5/3> <PICT:0966455/C4-C5/4> The active element 16 of a laser is excited by two light sources 14, 15 such as Xenon flash tubes associated with elliptical specular reflectors as shown in Figs. 1 and 2. Three, four or more sources may be used as shown in Figs. 3, 4. The active material of element 16 may be a solid such as a ruby, calcium fluoride with 0.05% uranium or 0.05% samarium, calcium tungstate with 0.10% neodymium or quantities of praseodymium, thulium or holmium, strontium molybdate with quantities of neodymium, luminescent glasses, or it may be a fluid such as tetrachlorosemiquinone, caesium vapour or a mixture of helium and neon contained in transparent tubes. The element 16 can be coated with material acting as a filter so that substantially monochromatic light is admitted into the interior of the element. The ends of the element 16 can have a convex shape and can be coated with mirror-like material. A coating of sapphire can be used for heat dissipation. A conical port 22 for the emitted radiation can be provided. For cooling purposes dry nitrogen is pumped through the cavity formed by the reflectors, the nitrogen being supplied to inlets 28 and exhausted through outlets 29. Liquid nitrogen flowing in chamber 23 provides a sink for heat flowing from the end of element 16. A similar heat sink may be provided at the other end of the element.
GB999963A 1962-05-11 1963-03-13 Devices for producing coherent electromagnetic radiation Expired GB966455A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19407262A 1962-05-11 1962-05-11

Publications (1)

Publication Number Publication Date
GB966455A true GB966455A (en) 1964-08-12

Family

ID=22716194

Family Applications (1)

Application Number Title Priority Date Filing Date
GB999963A Expired GB966455A (en) 1962-05-11 1963-03-13 Devices for producing coherent electromagnetic radiation

Country Status (5)

Country Link
BE (1) BE631627A (en)
DE (1) DE1170071B (en)
GB (1) GB966455A (en)
NL (1) NL290614A (en)
SE (1) SE316850B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3404253A (en) * 1964-11-24 1968-10-01 Union Carbide Corp Laser welding
US3477037A (en) * 1965-09-24 1969-11-04 Elton Ind Inc Laser device employing fluid material for producing high efficiency laser beam
US3481340A (en) * 1965-06-17 1969-12-02 William B Mcknight Rapid firing laser surgical device
US3521178A (en) * 1968-05-10 1970-07-21 Horst Herbrich Continuously emitting solid-state laser device
DE2017341A1 (en) * 1969-04-21 1970-10-22 American Optical Corp., Southbridge, Mass. (V.St.A.) Laser device
CN103944050A (en) * 2013-01-22 2014-07-23 惠州市通发激光设备有限公司 High-power solid-state laser

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1437508A (en) * 1965-03-12 1966-05-06 Comp Generale Electricite Coherent light laser pump control
DE1514349B1 (en) * 1965-05-07 1970-04-23 Ringsdorff Werke Gmbh Optical transmitter or amplifier
US4506369A (en) * 1982-08-06 1985-03-19 General Electric Company High power cesium lamp system for laser pumping

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2929922A (en) * 1958-07-30 1960-03-22 Bell Telephone Labor Inc Masers and maser communications system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3404253A (en) * 1964-11-24 1968-10-01 Union Carbide Corp Laser welding
US3481340A (en) * 1965-06-17 1969-12-02 William B Mcknight Rapid firing laser surgical device
US3477037A (en) * 1965-09-24 1969-11-04 Elton Ind Inc Laser device employing fluid material for producing high efficiency laser beam
US3521178A (en) * 1968-05-10 1970-07-21 Horst Herbrich Continuously emitting solid-state laser device
DE2017341A1 (en) * 1969-04-21 1970-10-22 American Optical Corp., Southbridge, Mass. (V.St.A.) Laser device
CN103944050A (en) * 2013-01-22 2014-07-23 惠州市通发激光设备有限公司 High-power solid-state laser

Also Published As

Publication number Publication date
NL290614A (en)
SE316850B (en) 1969-11-03
DE1170071B (en) 1964-05-14
BE631627A (en)

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