GB1172378A - Continuous Wave Lasers - Google Patents

Continuous Wave Lasers

Info

Publication number
GB1172378A
GB1172378A GB5783266A GB5783266A GB1172378A GB 1172378 A GB1172378 A GB 1172378A GB 5783266 A GB5783266 A GB 5783266A GB 5783266 A GB5783266 A GB 5783266A GB 1172378 A GB1172378 A GB 1172378A
Authority
GB
United Kingdom
Prior art keywords
arc
envelope
anode
quartz
circulated
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
GB5783266A
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.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
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 Union Carbide Corp filed Critical Union Carbide Corp
Publication of GB1172378A publication Critical patent/GB1172378A/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
    • 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)
  • Lasers (AREA)

Abstract

1,172,378. Lasers. UNION CARBIDE CORP. 23 Dec., 1966 [29 Dec., 1965], No. 57832/66. Heading H1C. In a laser in which a crystal active medium 18 and a pumping source 12 are located at respective foci of a reflecting enclosure 14 of elliptical cross-section, the pumping source comprises a high-pressure arc 16 produced within a trans. parent, e.g. quartz, envelope 24 between a tubular anode 22 and a cathode 20, the arc being stabilized and constricted into a lineal path by a swirling flow pattern of arc gas which is circulated under pressure between inlets 30 and an exit passage 28 in the anode. The arc may be started by a high-frequency discharge. The anode and cathode are water-cooled and are respectively formed of tungsten with or without thorium content, and copper preferably having a tungsten tip. An alternative anode material is a copper-silver alloy. Suitable arc gases are argon, xenon and krypton. The laser crystal may be either ruby or neodymium-doped yttrium aluminium garnet which is housed in a transparent, e.g. quartz, envelope through which water or other fluid coolant is circulated. The output of the laser is continuous and is concentrated on a workpiece X by a lens 44. To prevent deterioration of the quartz envelope 24, a gas such as argon or air is circulated under pressure through the enclosure 14 between inlet 32 and outlet 34. Additionally or alternatively the pumping source may be fluid-cooled by water or other radiation-transmitting liquid circulated between the envelope 24 and an outer transparent sleeve (not shown). Use of a tubular cathode with arc gas introduced at both ends of the arc cavity 26 is suggested.
GB5783266A 1965-12-29 1966-12-23 Continuous Wave Lasers Expired GB1172378A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US51727465A 1965-12-29 1965-12-29

Publications (1)

Publication Number Publication Date
GB1172378A true GB1172378A (en) 1969-11-26

Family

ID=24059126

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5783266A Expired GB1172378A (en) 1965-12-29 1966-12-23 Continuous Wave Lasers

Country Status (3)

Country Link
DE (1) DE1589011A1 (en)
FR (1) FR1506885A (en)
GB (1) GB1172378A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020060735A1 (en) * 2018-09-20 2020-03-26 Cymer, Llc Prolonged life laser chamber electrode and laser having same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020060735A1 (en) * 2018-09-20 2020-03-26 Cymer, Llc Prolonged life laser chamber electrode and laser having same
TWI725537B (en) * 2018-09-20 2021-04-21 美商希瑪有限責任公司 Prolonged life laser chamber electrode and laser having same
CN112739837A (en) * 2018-09-20 2021-04-30 西默有限公司 Long-life laser cavity electrode and laser with same

Also Published As

Publication number Publication date
DE1589011A1 (en) 1970-03-19
FR1506885A (en) 1967-12-22

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees