JPS56144590A - Driving device for semiconductor laser - Google Patents

Driving device for semiconductor laser

Info

Publication number
JPS56144590A
JPS56144590A JP4841680A JP4841680A JPS56144590A JP S56144590 A JPS56144590 A JP S56144590A JP 4841680 A JP4841680 A JP 4841680A JP 4841680 A JP4841680 A JP 4841680A JP S56144590 A JPS56144590 A JP S56144590A
Authority
JP
Japan
Prior art keywords
laser
power source
driving
constant current
delayed
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
JP4841680A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6243351B2 (enrdf_load_stackoverflow
Inventor
Keiichiro Horai
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP4841680A priority Critical patent/JPS56144590A/ja
Publication of JPS56144590A publication Critical patent/JPS56144590A/ja
Publication of JPS6243351B2 publication Critical patent/JPS6243351B2/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
    • 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
    • H01S5/06825—Protecting the laser, e.g. during switch-on/off, detection of malfunctioning or degradation

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Semiconductor Lasers (AREA)
  • Optical Head (AREA)
JP4841680A 1980-04-13 1980-04-13 Driving device for semiconductor laser Granted JPS56144590A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4841680A JPS56144590A (en) 1980-04-13 1980-04-13 Driving device for semiconductor laser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4841680A JPS56144590A (en) 1980-04-13 1980-04-13 Driving device for semiconductor laser

Publications (2)

Publication Number Publication Date
JPS56144590A true JPS56144590A (en) 1981-11-10
JPS6243351B2 JPS6243351B2 (enrdf_load_stackoverflow) 1987-09-12

Family

ID=12802697

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4841680A Granted JPS56144590A (en) 1980-04-13 1980-04-13 Driving device for semiconductor laser

Country Status (1)

Country Link
JP (1) JPS56144590A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6242585A (ja) * 1985-08-20 1987-02-24 Matsushita Electric Ind Co Ltd 半導体レ−ザ保護回路
US4745610A (en) * 1985-05-20 1988-05-17 Olympus Optical Co., Ltd. Semiconductor laser drive device with an abnormal voltage protection circuit
JPH0330130A (ja) * 1989-06-28 1991-02-08 Sharp Corp 半導体レーザ駆動回路

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4745610A (en) * 1985-05-20 1988-05-17 Olympus Optical Co., Ltd. Semiconductor laser drive device with an abnormal voltage protection circuit
JPS6242585A (ja) * 1985-08-20 1987-02-24 Matsushita Electric Ind Co Ltd 半導体レ−ザ保護回路
JPH0330130A (ja) * 1989-06-28 1991-02-08 Sharp Corp 半導体レーザ駆動回路

Also Published As

Publication number Publication date
JPS6243351B2 (enrdf_load_stackoverflow) 1987-09-12

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