GB8306806D0 - Emitter-receiver laser device - Google Patents

Emitter-receiver laser device

Info

Publication number
GB8306806D0
GB8306806D0 GB838306806A GB8306806A GB8306806D0 GB 8306806 D0 GB8306806 D0 GB 8306806D0 GB 838306806 A GB838306806 A GB 838306806A GB 8306806 A GB8306806 A GB 8306806A GB 8306806 D0 GB8306806 D0 GB 8306806D0
Authority
GB
United Kingdom
Prior art keywords
detector
emitter
laser
impulses
amplifier
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.)
Withdrawn
Application number
GB838306806A
Other versions
GB2117994A (en
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.)
Compagnie Industriel des Lasers CILAS SA
Original Assignee
Compagnie Industriel des Lasers CILAS 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 Industriel des Lasers CILAS SA filed Critical Compagnie Industriel des Lasers CILAS SA
Publication of GB8306806D0 publication Critical patent/GB8306806D0/en
Publication of GB2117994A publication Critical patent/GB2117994A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2/00—Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light
    • G02F2/002—Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light using optical mixing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/491—Details of non-pulse systems
    • G01S7/4912—Receivers
    • G01S7/4917—Receivers superposing optical signals in a photodetector, e.g. optical heterodyne detection

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

An emitter-receiver laser device with heterodyne detection comprises a laser emitter (1), an optical separating lamina (6), a rotary shutter (11) and an optical system (10), aligned successively on the same axis (2), in order to form a beam of impulses (29) illuminating the target, and on the return axis (13) of the separating lamina (6) it has a crystal (14) which produces frequency shifting of the radiation (reference beam) and which is followed by a photoelectric detector (16) which also receives an echo (30) of the laser impulses returned by the target. The output of detector (16) is amplified by amplifier (22) and passed through an envelope detector (23) and amplifier (24) to undergo a syndronous detection at the modulation low frequency produced by the shutter (11). Parasitic retroreflections of the laser impulses from the optical system (10) do not confuse the detector (16) in this arrangement. <IMAGE>
GB08306806A 1982-03-11 1983-03-11 Emitter-receiver laser device and its application with a system of distant detection Withdrawn GB2117994A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8204109A FR2523378B1 (en) 1982-03-11 1982-03-11 LASER TRANSCEIVER DEVICE AND APPLICATION TO A REMOTE SENSING SYSTEM

Publications (2)

Publication Number Publication Date
GB8306806D0 true GB8306806D0 (en) 1983-04-20
GB2117994A GB2117994A (en) 1983-10-19

Family

ID=9271877

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08306806A Withdrawn GB2117994A (en) 1982-03-11 1983-03-11 Emitter-receiver laser device and its application with a system of distant detection

Country Status (4)

Country Link
DE (1) DE3308584A1 (en)
FR (1) FR2523378B1 (en)
GB (1) GB2117994A (en)
NL (1) NL8300905A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3324341C2 (en) * 1983-07-06 1986-02-13 Ralf 6750 Kaiserslautern Hinkel Device for the precise determination of short transit times of electronically generated pulses
JPH04134238A (en) * 1990-09-27 1992-05-08 Ando Electric Co Ltd Light pulse tester using heterodyne light reception

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3573463A (en) * 1967-11-01 1971-04-06 Hughes Aircraft Co Laser heterodyne transceiver communication system with afc
DE2908231A1 (en) * 1979-03-02 1980-09-04 Messerschmitt Boelkow Blohm CO TIEF 2 LASER TARGET DETERMINATION AND MISSILE CONTROL

Also Published As

Publication number Publication date
GB2117994A (en) 1983-10-19
FR2523378A1 (en) 1983-09-16
DE3308584A1 (en) 1983-11-24
NL8300905A (en) 1983-10-03
FR2523378B1 (en) 1986-01-24

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)