JPS6457688A - Semiconductor laser device - Google Patents

Semiconductor laser device

Info

Publication number
JPS6457688A
JPS6457688A JP21406187A JP21406187A JPS6457688A JP S6457688 A JPS6457688 A JP S6457688A JP 21406187 A JP21406187 A JP 21406187A JP 21406187 A JP21406187 A JP 21406187A JP S6457688 A JPS6457688 A JP S6457688A
Authority
JP
Japan
Prior art keywords
semiconductor laser
instruction
limiting
laser
change
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
JP21406187A
Other languages
Japanese (ja)
Inventor
Yasuhiro Sakamoto
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP21406187A priority Critical patent/JPS6457688A/en
Publication of JPS6457688A publication Critical patent/JPS6457688A/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

Landscapes

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

Abstract

PURPOSE:To make it possible to use a semiconductor laser for a while until the laser is exchanged even after the deterioration and so on of the laser are detected by a method wherein a means for limiting variably a current to be supplied to the laser by an instruction and a decision means for sending out an instruction to the above means according to the semiconductor laser output are provided. CONSTITUTION:In a semiconductor laser having a means 3 for controlling a semiconductor laser output in a roughly constant state on the basis of the monitor output of the semiconductor laser output, a means 18 for limiting variably a current to be supplied to the semiconductor laser 1 by an instruction and a decision means 4 for sending out an instruction to the above limiting means 18 according to the laser output are provided. For example, a means that constantvoltage diodes 18a and 18b, whose anodes are connected to the ground, are connected to a base of a transistor 11 of the APC circuit 3 in a way capable of changing over by a change-over switch 18c is provided as the above driving current limiting means 18 and the changeover is performed by the change-over instruction of the decision circuit 4 to set as to change a driving current limiting value into two stages.
JP21406187A 1987-08-27 1987-08-27 Semiconductor laser device Pending JPS6457688A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21406187A JPS6457688A (en) 1987-08-27 1987-08-27 Semiconductor laser device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21406187A JPS6457688A (en) 1987-08-27 1987-08-27 Semiconductor laser device

Publications (1)

Publication Number Publication Date
JPS6457688A true JPS6457688A (en) 1989-03-03

Family

ID=16649611

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21406187A Pending JPS6457688A (en) 1987-08-27 1987-08-27 Semiconductor laser device

Country Status (1)

Country Link
JP (1) JPS6457688A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006066592A (en) * 2004-08-26 2006-03-09 Mitsubishi Electric Corp Optical transmitter
JP2011016016A (en) * 2010-10-26 2011-01-27 Sammy Corp Board case for game machine
JP2011016015A (en) * 2010-10-26 2011-01-27 Sammy Corp Board case for game machine
JP2011045764A (en) * 2010-12-06 2011-03-10 Sammy Corp Board case for game machine
JP2011045765A (en) * 2010-12-06 2011-03-10 Sammy Corp Board case for game machine
JP2011045766A (en) * 2010-12-06 2011-03-10 Sammy Corp Board case for game machine
JP2011072803A (en) * 2010-12-06 2011-04-14 Sammy Corp Board case for game machine
JP5567176B1 (en) * 2013-03-25 2014-08-06 ミハル通信株式会社 Semiconductor light emitting device controller

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006066592A (en) * 2004-08-26 2006-03-09 Mitsubishi Electric Corp Optical transmitter
JP2011016016A (en) * 2010-10-26 2011-01-27 Sammy Corp Board case for game machine
JP2011016015A (en) * 2010-10-26 2011-01-27 Sammy Corp Board case for game machine
JP2011045764A (en) * 2010-12-06 2011-03-10 Sammy Corp Board case for game machine
JP2011045765A (en) * 2010-12-06 2011-03-10 Sammy Corp Board case for game machine
JP2011045766A (en) * 2010-12-06 2011-03-10 Sammy Corp Board case for game machine
JP2011072803A (en) * 2010-12-06 2011-04-14 Sammy Corp Board case for game machine
JP5567176B1 (en) * 2013-03-25 2014-08-06 ミハル通信株式会社 Semiconductor light emitting device controller

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