JPS5763879A - Output stabilizing method for semiconductor laser device - Google Patents

Output stabilizing method for semiconductor laser device

Info

Publication number
JPS5763879A
JPS5763879A JP13867880A JP13867880A JPS5763879A JP S5763879 A JPS5763879 A JP S5763879A JP 13867880 A JP13867880 A JP 13867880A JP 13867880 A JP13867880 A JP 13867880A JP S5763879 A JPS5763879 A JP S5763879A
Authority
JP
Japan
Prior art keywords
output
semiconductor laser
laser device
comparator
stabilizing method
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
JP13867880A
Other languages
Japanese (ja)
Inventor
Isamu 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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP13867880A priority Critical patent/JPS5763879A/en
Publication of JPS5763879A publication Critical patent/JPS5763879A/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
    • H01S5/06—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
    • H01S5/06837—Stabilising otherwise than by an applied electric field or current, e.g. by controlling the temperature

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 output of a semiconductor laser device, by controlling an electron refrigerating element and laser element driving curent device in accordance with output of a heat-sensitive element arranged in proximity of a semiconductor laser device. CONSTITUTION:A semiconductor laser element 12 is driven circuit 11, temperature in the neighborhood of this element is detected by a heat-sensitive element 13, an output on one side is put into a comparator 15 through an amplifier 14, an electron refrigerating element 18 of Beltier effect element, etc. is controlled and driven by this output through a drive control circuit 16, an output on the other side is put into a comparator 19 and the laser driving circuit 11 is controlled by this output. It is possible, by doing so, to reduce in number of elements constituting an output stabilizing device and improve safety of temperature control.
JP13867880A 1980-10-06 1980-10-06 Output stabilizing method for semiconductor laser device Pending JPS5763879A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13867880A JPS5763879A (en) 1980-10-06 1980-10-06 Output stabilizing method for semiconductor laser device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13867880A JPS5763879A (en) 1980-10-06 1980-10-06 Output stabilizing method for semiconductor laser device

Publications (1)

Publication Number Publication Date
JPS5763879A true JPS5763879A (en) 1982-04-17

Family

ID=15227542

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13867880A Pending JPS5763879A (en) 1980-10-06 1980-10-06 Output stabilizing method for semiconductor laser device

Country Status (1)

Country Link
JP (1) JPS5763879A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60130875A (en) * 1983-12-19 1985-07-12 Seiko Epson Corp Automatic output control device of laser diode
US4713672A (en) * 1985-07-24 1987-12-15 Mita Industrial Co., Ltd. Laser beam printer
US4734914A (en) * 1985-03-15 1988-03-29 Olympus Optical Co., Ltd. Stabilized laser apparatus
JPH0215762U (en) * 1988-07-18 1990-01-31
JPH02244685A (en) * 1989-03-15 1990-09-28 Nec Corp Ld module protecting method
WO2000013346A1 (en) * 1998-08-28 2000-03-09 Calibre, Inc. Method and system for preventing burn-out of infrared transmitter diodes

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60130875A (en) * 1983-12-19 1985-07-12 Seiko Epson Corp Automatic output control device of laser diode
US4734914A (en) * 1985-03-15 1988-03-29 Olympus Optical Co., Ltd. Stabilized laser apparatus
US4713672A (en) * 1985-07-24 1987-12-15 Mita Industrial Co., Ltd. Laser beam printer
JPH0215762U (en) * 1988-07-18 1990-01-31
JPH02244685A (en) * 1989-03-15 1990-09-28 Nec Corp Ld module protecting method
WO2000013346A1 (en) * 1998-08-28 2000-03-09 Calibre, Inc. Method and system for preventing burn-out of infrared transmitter diodes

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