GB1097791A - Improvements in or relating to q-switched lasers - Google Patents

Improvements in or relating to q-switched lasers

Info

Publication number
GB1097791A
GB1097791A GB54165A GB54165A GB1097791A GB 1097791 A GB1097791 A GB 1097791A GB 54165 A GB54165 A GB 54165A GB 54165 A GB54165 A GB 54165A GB 1097791 A GB1097791 A GB 1097791A
Authority
GB
United Kingdom
Prior art keywords
active element
mirror
light path
jan
leaves
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
GB54165A
Inventor
Charles Hally Harro Carmichael
James Kenneth Wright
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.)
MINI OF TECHNOLOGY
Minister of Technology
Original Assignee
MINI OF TECHNOLOGY
Minister of Technology
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 MINI OF TECHNOLOGY, Minister of Technology filed Critical MINI OF TECHNOLOGY
Priority to GB54165A priority Critical patent/GB1097791A/en
Publication of GB1097791A publication Critical patent/GB1097791A/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
    • H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
    • H01S3/1123—Q-switching
    • H01S3/121—Q-switching using intracavity mechanical devices
    • H01S3/123—Q-switching using intracavity mechanical devices using rotating mirrors
    • 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
    • H01S3/06—Construction or shape of active medium
    • H01S3/0602—Crystal lasers or glass lasers
    • H01S3/0606—Crystal lasers or glass lasers with polygonal cross-section, e.g. slab, prism
    • 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
    • H01S3/08095—Zig-zag travelling beam through the active medium

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Lasers (AREA)

Abstract

1,097,791. Lasers. MINISTER OF AVIATION, LONDON. Jan. 4, 1966 [Jan. 6, 1965], No. 541/65. Heading H1C. The resonant light path through the active element 1 of a Q-switched laser enters and leaves the element at the Brewster angle, while within the element the path includes a plurality of total internal reflections C, D, E, F at two plane parallel optically flat sides OP, RS of the element. As shown in Fig. 1 the optical cavity is formed by an adjustable mirror 2 and a clockwise-rotating mirror 3. The active element is a neodymium glass rod having sloped and parallel plane end faces OS, PR, the end face PR being so arranged with respect to the rotating mirror 3 that reflected incident light in paths such as HJ pass through the active element and emerge at KL without total internal reflection. Thus Q-switching becomes more effective, since the resonant light path is established suddenly when the light normally emergent at points such as K becomes totally internally reflected at F as mirror 3 rotates. In a modification, Fig. 2 (not shown), the resonant light path enters and leaves the laser active element through angled extensions PQ, TS of the plane parallel and optically flat sides OP, RS.
GB54165A 1965-01-06 1965-01-06 Improvements in or relating to q-switched lasers Expired GB1097791A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB54165A GB1097791A (en) 1965-01-06 1965-01-06 Improvements in or relating to q-switched lasers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB54165A GB1097791A (en) 1965-01-06 1965-01-06 Improvements in or relating to q-switched lasers

Publications (1)

Publication Number Publication Date
GB1097791A true GB1097791A (en) 1968-01-03

Family

ID=9706173

Family Applications (1)

Application Number Title Priority Date Filing Date
GB54165A Expired GB1097791A (en) 1965-01-06 1965-01-06 Improvements in or relating to q-switched lasers

Country Status (1)

Country Link
GB (1) GB1097791A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2096648A1 (en) * 1970-04-17 1972-02-25 Gen Electric
FR2367364A1 (en) * 1976-10-06 1978-05-05 Owens Illinois Inc ROTARY REAR MIRROR LASER IN WHICH THE EMISSION OF PREMATURE PULSES IS REMOVED

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2096648A1 (en) * 1970-04-17 1972-02-25 Gen Electric
FR2367364A1 (en) * 1976-10-06 1978-05-05 Owens Illinois Inc ROTARY REAR MIRROR LASER IN WHICH THE EMISSION OF PREMATURE PULSES IS REMOVED

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