GB1262293A - Improvements in or relating to laser systems - Google Patents

Improvements in or relating to laser systems

Info

Publication number
GB1262293A
GB1262293A GB1876268A GB1876268A GB1262293A GB 1262293 A GB1262293 A GB 1262293A GB 1876268 A GB1876268 A GB 1876268A GB 1876268 A GB1876268 A GB 1876268A GB 1262293 A GB1262293 A GB 1262293A
Authority
GB
United Kingdom
Prior art keywords
laser
april
light
internal reflection
total internal
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
GB1876268A
Inventor
William Robert Bradford
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.)
EMI Ltd
Original Assignee
EMI Ltd
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 EMI Ltd filed Critical EMI Ltd
Priority to GB1876268A priority Critical patent/GB1262293A/en
Publication of GB1262293A publication Critical patent/GB1262293A/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
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/08—Construction or shape of optical resonators or components thereof
    • H01S3/081—Construction or shape of optical resonators or components thereof comprising three or more reflectors
    • H01S3/083—Ring lasers

Abstract

1,262,293. Lasers. EMI Ltd. 21 April, 1969 [20 April, 1968], No. 18762/68. Heading H1C. In a ring laser, back scatter of the circulated light is reduced by prismatic corner reflectors 4, 5, 6 formed with their incident faces 12, 14 at the Brewster angle. Each side of the ring laser consists of a laser discharge tube 1, 2, 3 which is sealed to the incident faces of the adjacent corner prisms. Circulated light is extracted by a frustrated total internal reflection arrangement using a further optical surface positioned in near contact with the total internal reflection base 7 of one of the prisms. In operation the laser action is preferably maintained at a level just sufficient to generate and maintain the circulation of light plane polarized by the Brewster angle incident surfaces.
GB1876268A 1968-04-20 1968-04-20 Improvements in or relating to laser systems Expired GB1262293A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1876268A GB1262293A (en) 1968-04-20 1968-04-20 Improvements in or relating to laser systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1876268A GB1262293A (en) 1968-04-20 1968-04-20 Improvements in or relating to laser systems

Publications (1)

Publication Number Publication Date
GB1262293A true GB1262293A (en) 1972-02-02

Family

ID=10117968

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1876268A Expired GB1262293A (en) 1968-04-20 1968-04-20 Improvements in or relating to laser systems

Country Status (1)

Country Link
GB (1) GB1262293A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2190237A (en) * 1986-05-02 1987-11-11 Ferranti Plc Folding prism for use between two sections of a folded laser

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2190237A (en) * 1986-05-02 1987-11-11 Ferranti Plc Folding prism for use between two sections of a folded laser

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