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JPS551119A - Semiconductor laser apparatus - Google Patents

Semiconductor laser apparatus

Info

Publication number
JPS551119A
JPS551119A JP7350078A JP7350078A JPS551119A JP S551119 A JPS551119 A JP S551119A JP 7350078 A JP7350078 A JP 7350078A JP 7350078 A JP7350078 A JP 7350078A JP S551119 A JPS551119 A JP S551119A
Authority
JP
Japan
Prior art keywords
window
laser
dewing
external air
electrode
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
JP7350078A
Other languages
Japanese (ja)
Inventor
Isao Hakamata
Naoto Kawamura
Koichi Sakugi
Masaaki Ishii
Takashi Kitamura
Haruo Uchiyama
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 JP7350078A priority Critical patent/JPS551119A/en
Publication of JPS551119A publication Critical patent/JPS551119A/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
    • H01S5/022—Mountings; Housings
    • H01S5/02218—Material of the housings; Filling of the housings
    • H01S5/0222—Gas-filled housings
    • 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
    • H01S5/005—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping
    • 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
    • H01S5/0607—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying physical parameters other than the potential of the electrodes, e.g. by an electric or magnetic field, mechanical deformation, pressure, light, temperature
    • H01S5/0612—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying physical parameters other than the potential of the electrodes, e.g. by an electric or magnetic field, mechanical deformation, pressure, light, temperature controlled by 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 prevent the scattering of laser light due to water drops and obtain a prescribed quantity of light, by preventing the dewing on an optical window of a laser apparatus.
CONSTITUTION: A heat-insulating polyurethane sheet 2 is bonded to a metal cover 3. The laser light is emitted out a window 1. A laser element 4 is held on a mount 5. An endothermic electrode 6a and exothermic electrode 6b are attached to both the ends of a Peltier element 6. The heat of the electrode 6b is radiated through a base 7. The cover 3 is tightly fitted on the base 7 to shut off a space 9 from the external air. Dry nitrogen is filled in the space 9 to prevent the dewing on the inside of the window 1. A thermister 8 is attached to the mount 5 to control a voltage applied to the Peltier element 6. Because the temperature of the laser element is kept low and the temperature difference between the external air and the window is reduced or the temperature of the window is made higher than that of the external air, the dewing is prevented and a stable laser output is obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP7350078A 1978-06-16 1978-06-16 Semiconductor laser apparatus Pending JPS551119A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7350078A JPS551119A (en) 1978-06-16 1978-06-16 Semiconductor laser apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7350078A JPS551119A (en) 1978-06-16 1978-06-16 Semiconductor laser apparatus

Publications (1)

Publication Number Publication Date
JPS551119A true JPS551119A (en) 1980-01-07

Family

ID=13520029

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7350078A Pending JPS551119A (en) 1978-06-16 1978-06-16 Semiconductor laser apparatus

Country Status (1)

Country Link
JP (1) JPS551119A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6179285A (en) * 1984-09-26 1986-04-22 Mita Ind Co Ltd Control method of temperature of semiconductor laser
JPH0162529U (en) * 1987-10-15 1989-04-21
JPH01145623A (en) * 1987-12-02 1989-06-07 Canon Inc Laser unit
WO1996034434A1 (en) * 1995-04-28 1996-10-31 Accu-Sort Systems, Inc. Temperature regulating laser diode assembly
US7200294B2 (en) 2003-03-27 2007-04-03 Sumitomo Electric Industries, Ltd. Light-transmitting module capable of heating the light-emitting module and the substrate included therein
US11133643B2 (en) 2017-10-06 2021-09-28 Fanuc Corporation Laser apparatus including dew condensation prevention function

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6179285A (en) * 1984-09-26 1986-04-22 Mita Ind Co Ltd Control method of temperature of semiconductor laser
JPH0162529U (en) * 1987-10-15 1989-04-21
JPH01145623A (en) * 1987-12-02 1989-06-07 Canon Inc Laser unit
WO1996034434A1 (en) * 1995-04-28 1996-10-31 Accu-Sort Systems, Inc. Temperature regulating laser diode assembly
US5640407A (en) * 1995-04-28 1997-06-17 Accu-Sort Systems, Inc. Temperature regulating laser diode assembly
US7200294B2 (en) 2003-03-27 2007-04-03 Sumitomo Electric Industries, Ltd. Light-transmitting module capable of heating the light-emitting module and the substrate included therein
US11133643B2 (en) 2017-10-06 2021-09-28 Fanuc Corporation Laser apparatus including dew condensation prevention function

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