JPS5713790A - Output light intensity controller for laser array - Google Patents

Output light intensity controller for laser array

Info

Publication number
JPS5713790A
JPS5713790A JP8870580A JP8870580A JPS5713790A JP S5713790 A JPS5713790 A JP S5713790A JP 8870580 A JP8870580 A JP 8870580A JP 8870580 A JP8870580 A JP 8870580A JP S5713790 A JPS5713790 A JP S5713790A
Authority
JP
Japan
Prior art keywords
laser
laser array
light intensity
output light
intensity controller
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.)
Pending
Application number
JP8870580A
Other languages
Japanese (ja)
Inventor
Takehiko Shibata
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP8870580A priority Critical patent/JPS5713790A/en
Publication of JPS5713790A publication Critical patent/JPS5713790A/en
Pending 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
    • H01S5/00—Semiconductor lasers
    • H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
    • H01S5/068—Stabilisation of laser output parameters
    • H01S5/0683—Stabilisation of laser output parameters by monitoring the optical output parameters
    • 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
    • H01S5/00—Semiconductor lasers
    • H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
    • H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Semiconductor Lasers (AREA)

Abstract

PURPOSE:To stabilize the power of a laser array by monitoring the laser power of any one of a plurality of laser light emission sources and controlling the other lasers with the output of the monitoring means. CONSTITUTION:A multiple laser diode chip 1 has laser diodes LD1, LD2,..., LDn. The laser power light of the diode LD1 is incident to an optical fiber 2, and is emitted to a photodiode 3. The output of the photodiode 3 is applied through an operational amplifier 4 and a differential amplifier 5 to laser driver stages 6, 7....
JP8870580A 1980-06-30 1980-06-30 Output light intensity controller for laser array Pending JPS5713790A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8870580A JPS5713790A (en) 1980-06-30 1980-06-30 Output light intensity controller for laser array

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8870580A JPS5713790A (en) 1980-06-30 1980-06-30 Output light intensity controller for laser array

Publications (1)

Publication Number Publication Date
JPS5713790A true JPS5713790A (en) 1982-01-23

Family

ID=13950292

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8870580A Pending JPS5713790A (en) 1980-06-30 1980-06-30 Output light intensity controller for laser array

Country Status (1)

Country Link
JP (1) JPS5713790A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4821065A (en) * 1986-01-10 1989-04-11 Canon Kabushiki Kaisha Recording apparatus having controllable recording beam states
US4868675A (en) * 1987-08-25 1989-09-19 Oce-Nederland B.V. Control circuit for a laser printer
JPH0336778A (en) * 1989-07-04 1991-02-18 Fujitsu Ltd Controller for light emitting element array driving circuit
EP0525684A2 (en) * 1991-07-24 1993-02-03 Fujitsu Limited Integrated semiconductor laser array apparatus
US5412675A (en) * 1991-12-26 1995-05-02 Fujitsu Limited Semiconductor optical source capable of compensating for temperature-induced variation of laser oscillation threshold
US5767704A (en) * 1996-08-30 1998-06-16 Larson; Francis Willard High frequency analog switch for use with a laser diode
US7529282B2 (en) 2001-03-05 2009-05-05 Fuji Xerox Co., Ltd. Apparatus for driving light emitting element and system for driving light emitting element
US8976827B2 (en) 2012-10-04 2015-03-10 Sony Corporation Driving device and light-emitting unit
JP2015201587A (en) * 2014-04-10 2015-11-12 株式会社島津製作所 semiconductor laser drive circuit
JP2017188702A (en) * 2017-07-18 2017-10-12 株式会社島津製作所 Semiconductor laser drive circuit

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4821065A (en) * 1986-01-10 1989-04-11 Canon Kabushiki Kaisha Recording apparatus having controllable recording beam states
US4868675A (en) * 1987-08-25 1989-09-19 Oce-Nederland B.V. Control circuit for a laser printer
EP0476719A2 (en) * 1987-08-25 1992-03-25 Océ-Nederland B.V. A control circuit for a laser printer
JPH0336778A (en) * 1989-07-04 1991-02-18 Fujitsu Ltd Controller for light emitting element array driving circuit
EP0525684A2 (en) * 1991-07-24 1993-02-03 Fujitsu Limited Integrated semiconductor laser array apparatus
US5337323A (en) * 1991-07-24 1994-08-09 Fujitsu Limited Integrated semiconductor laser array apparatus
US5412675A (en) * 1991-12-26 1995-05-02 Fujitsu Limited Semiconductor optical source capable of compensating for temperature-induced variation of laser oscillation threshold
US5767704A (en) * 1996-08-30 1998-06-16 Larson; Francis Willard High frequency analog switch for use with a laser diode
US7529282B2 (en) 2001-03-05 2009-05-05 Fuji Xerox Co., Ltd. Apparatus for driving light emitting element and system for driving light emitting element
US8976827B2 (en) 2012-10-04 2015-03-10 Sony Corporation Driving device and light-emitting unit
JP2015201587A (en) * 2014-04-10 2015-11-12 株式会社島津製作所 semiconductor laser drive circuit
JP2017188702A (en) * 2017-07-18 2017-10-12 株式会社島津製作所 Semiconductor laser drive circuit

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