JPS5754383A - Power source device for laser diode - Google Patents

Power source device for laser diode

Info

Publication number
JPS5754383A
JPS5754383A JP13092080A JP13092080A JPS5754383A JP S5754383 A JPS5754383 A JP S5754383A JP 13092080 A JP13092080 A JP 13092080A JP 13092080 A JP13092080 A JP 13092080A JP S5754383 A JPS5754383 A JP S5754383A
Authority
JP
Japan
Prior art keywords
laser diode
temperature
power source
controlling
output
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
JP13092080A
Other languages
Japanese (ja)
Inventor
Tsuneo Hirose
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 JP13092080A priority Critical patent/JPS5754383A/en
Publication of JPS5754383A publication Critical patent/JPS5754383A/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
    • H01S5/02—Structural details or components not essential to laser action
    • H01S5/024—Arrangements for thermal management
    • H01S5/02407—Active cooling, e.g. the laser temperature is controlled by a thermo-electric cooler or water cooling
    • H01S5/02415—Active cooling, e.g. the laser temperature is controlled by a thermo-electric cooler or water cooling by using a thermo-electric cooler [TEC], e.g. Peltier element
    • 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
    • H01S5/06804—Stabilisation of laser output parameters by monitoring an external parameter, e.g. temperature
    • 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)
  • Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)

Abstract

PURPOSE:To prevent the damage of the laser diode even when a feedback system loop gets trouble, and to emit stable light output by controlling the temperature of the laser diode at a predetermined value. CONSTITUTION:The power source device is composed of a power source section 1', output thereof can be controlled, a protective resistor 2, the laser diode 3, a photosensor 4 detecting the output light of the laser diode 3, a feedback controlling section 5 controlling the output of the power source section 1' so as to make the light output of the laser diode 3 constant by means of the photosensor 4, a temperature sensor 6 detecting the ambient temperature of the laser diode 3 and the temperature of laser diode 3 itself, a thermoelectric element 7 heating and cooling the laser diode 3, and a temperature controlling section 8 controlling the magnitude of currents conducted through the thermoelectric element 7 so that the temperature of the laser diode 3 reaches within a prescribed temperature range on the basis of the temperature sensor 6.
JP13092080A 1980-09-19 1980-09-19 Power source device for laser diode Pending JPS5754383A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13092080A JPS5754383A (en) 1980-09-19 1980-09-19 Power source device for laser diode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13092080A JPS5754383A (en) 1980-09-19 1980-09-19 Power source device for laser diode

Publications (1)

Publication Number Publication Date
JPS5754383A true JPS5754383A (en) 1982-03-31

Family

ID=15045820

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13092080A Pending JPS5754383A (en) 1980-09-19 1980-09-19 Power source device for laser diode

Country Status (1)

Country Link
JP (1) JPS5754383A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS616618A (en) * 1984-06-21 1986-01-13 Matsushita Electric Ind Co Ltd Optical microphone
JPH01300579A (en) * 1988-05-30 1989-12-05 Mitsubishi Electric Corp Semiconductor laser device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS616618A (en) * 1984-06-21 1986-01-13 Matsushita Electric Ind Co Ltd Optical microphone
JPH01300579A (en) * 1988-05-30 1989-12-05 Mitsubishi Electric Corp Semiconductor laser device

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