JPS57105719A - Method and device for extracting single optical pulse - Google Patents

Method and device for extracting single optical pulse

Info

Publication number
JPS57105719A
JPS57105719A JP55184259A JP18425980A JPS57105719A JP S57105719 A JPS57105719 A JP S57105719A JP 55184259 A JP55184259 A JP 55184259A JP 18425980 A JP18425980 A JP 18425980A JP S57105719 A JPS57105719 A JP S57105719A
Authority
JP
Japan
Prior art keywords
optical pulse
pulse
single optical
pulse train
laser
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.)
Granted
Application number
JP55184259A
Other languages
Japanese (ja)
Other versions
JPS639204B2 (en
Inventor
Isao Matsushima
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and 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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP55184259A priority Critical patent/JPS57105719A/en
Publication of JPS57105719A publication Critical patent/JPS57105719A/en
Publication of JPS639204B2 publication Critical patent/JPS639204B2/ja
Granted 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
    • H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
    • H01S3/0057—Temporal shaping, e.g. pulse compression, frequency chirping

Abstract

PURPOSE:To easily extract a stable single optical pulse, by detecting it by use of a difference of magnitude of adjacent pulses of an optical pulse train from a laser. CONSTITUTION:An optical pulse train from a laser 1 is converted to a pulse train of an electric signal by detector 2, and it is made an input of the next comparator 5. The comparator 5 compares a threshold level set in advance with the pulse train of its electric signal. A result of comparison is sent to the next pulse generator 6, and the pulse generator 6 is constituted so as to generate a pulse when the optical pulse has exceeded a threshold level for the first time. Accordingly, by this pulse, an optical shutter 4 is operated, and a single optical pulse can be extracted. In this way, since it can be executed irrespective of stability of the optical pulse train from the laser, a stable single optical pulse is extracted easily.
JP55184259A 1980-12-24 1980-12-24 Method and device for extracting single optical pulse Granted JPS57105719A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55184259A JPS57105719A (en) 1980-12-24 1980-12-24 Method and device for extracting single optical pulse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55184259A JPS57105719A (en) 1980-12-24 1980-12-24 Method and device for extracting single optical pulse

Publications (2)

Publication Number Publication Date
JPS57105719A true JPS57105719A (en) 1982-07-01
JPS639204B2 JPS639204B2 (en) 1988-02-26

Family

ID=16150178

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55184259A Granted JPS57105719A (en) 1980-12-24 1980-12-24 Method and device for extracting single optical pulse

Country Status (1)

Country Link
JP (1) JPS57105719A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01203016A (en) * 1988-02-08 1989-08-15 Arai Tekkosho:Kk Small fluid treating element
JPH0281607U (en) * 1988-12-07 1990-06-25

Also Published As

Publication number Publication date
JPS639204B2 (en) 1988-02-26

Similar Documents

Publication Publication Date Title
JPS56160183A (en) Method and device for monitoring
JPS5555591A (en) Semiconductor light amplifier
JPS57105719A (en) Method and device for extracting single optical pulse
GB1170306A (en) Apparatus for Analysing Complex Waveforms
JPS56144184A (en) Ink detecting device
JPS5229796A (en) Smoke detector
JPS5434262A (en) Detector of moving objects
JPS55135456A (en) Short break detecting system
JPS5575342A (en) Signal detector circuit
JPS5441099A (en) Glass plate breakage detector
JPS53148951A (en) Detector for pulse input time duration
JPS54660A (en) Detector of coil diameter of take-op machine
JPS5329772A (en) Speed detecting method
JPS5393861A (en) Recorder
JPS54157433A (en) Channel selecting device containing automatic station searching function
JPS5443033A (en) Paper detecting method
JPS5463393A (en) In-tunnel cable laying apparatus
JPS5412436A (en) Output detection circuit for ac constant current power source
JPS53115110A (en) Light-combination type current switch scanning system
JPS5295448A (en) Derailment detection device
JPS5471935A (en) Signal sampling pulse generator
JPS5368932A (en) Bias magnetic field generator for bubble device
JPS5280184A (en) System for detecting noise pulses
JPS5419631A (en) Comparison detector
JPS5780842A (en) Pilot signal detecting device