JPS5621391A - External resonator-equipped semiconductor laser element - Google Patents

External resonator-equipped semiconductor laser element

Info

Publication number
JPS5621391A
JPS5621391A JP9662079A JP9662079A JPS5621391A JP S5621391 A JPS5621391 A JP S5621391A JP 9662079 A JP9662079 A JP 9662079A JP 9662079 A JP9662079 A JP 9662079A JP S5621391 A JPS5621391 A JP S5621391A
Authority
JP
Japan
Prior art keywords
etalons
lights
laser element
reflection
semiconductor laser
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
JP9662079A
Other languages
Japanese (ja)
Inventor
Ritsuo Hasumi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP9662079A priority Critical patent/JPS5621391A/en
Publication of JPS5621391A publication Critical patent/JPS5621391A/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
    • H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
    • H01S5/14—External cavity lasers

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 fluctuation of oscilation wavelength due to variation of temperature, by forming a reflection preventing film on one side of output face of a laser element, and by causing light put out from said face to reflect and return through etalon at least once. CONSTITUTION:By providing a semiconductor laser element 3 with two parallel output faces 4 and 5, a resonator is provided and, at the same time, the element 3 is prevented from resonance. In this mechanism, one output face 5 is provided with a reflection-preventing film, such as SiO2 film etc., to eliminate reflection, and all the lights 7 put out therefrom are converted into parallel rays using a lens 8. And then, these lights are vertically radiated into two etalons 1 and 2 having different lengths, and the lights are caused to reflect and return from the reflecting faces 9 of the etalon 2 which are set to 100% reflecting positions. While resonance wavelength existing in gain distribution of the element 3 is thus oscillated in the etalons 1 and 2, as it is possible to provide the etalons 1 and 2 by keeping away from the element 3, the etalons 1 and 2 can be prevented from being influenced by the heat generating in the element 3.
JP9662079A 1979-07-28 1979-07-28 External resonator-equipped semiconductor laser element Pending JPS5621391A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9662079A JPS5621391A (en) 1979-07-28 1979-07-28 External resonator-equipped semiconductor laser element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9662079A JPS5621391A (en) 1979-07-28 1979-07-28 External resonator-equipped semiconductor laser element

Publications (1)

Publication Number Publication Date
JPS5621391A true JPS5621391A (en) 1981-02-27

Family

ID=14169881

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9662079A Pending JPS5621391A (en) 1979-07-28 1979-07-28 External resonator-equipped semiconductor laser element

Country Status (1)

Country Link
JP (1) JPS5621391A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59500248A (en) * 1982-02-09 1984-02-16 アイ、テイ−、テイ−，インダストリ−ズ　インコ−ポレ−テッド semiconductor laser
JPS6014258A (en) * 1983-07-06 1985-01-24 Canon Inc Information recorder
JPH03500353A (en) * 1988-03-29 1991-01-24 ブリテツシユ・テレコミユニケイシヨンズ・パブリツク・リミテツド・カンパニー semiconductor device structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59500248A (en) * 1982-02-09 1984-02-16 アイ、テイ−、テイ−，インダストリ−ズ　インコ−ポレ−テッド semiconductor laser
US4583227A (en) * 1982-02-09 1986-04-15 Itt Industries, Inc. Temperature compensating semiconductor lasers
JPS6014258A (en) * 1983-07-06 1985-01-24 Canon Inc Information recorder
JPH03500353A (en) * 1988-03-29 1991-01-24 ブリテツシユ・テレコミユニケイシヨンズ・パブリツク・リミテツド・カンパニー semiconductor device structure

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