JPS5264887A - Distribution feedback type laser - Google Patents

Distribution feedback type laser

Info

Publication number
JPS5264887A
JPS5264887A JP50140220A JP14022075A JPS5264887A JP S5264887 A JPS5264887 A JP S5264887A JP 50140220 A JP50140220 A JP 50140220A JP 14022075 A JP14022075 A JP 14022075A JP S5264887 A JPS5264887 A JP S5264887A
Authority
JP
Japan
Prior art keywords
feedback type
type laser
distribution feedback
laser
region
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
JP50140220A
Other languages
Japanese (ja)
Inventor
Toshihisa Tsukada
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP50140220A priority Critical patent/JPS5264887A/en
Publication of JPS5264887A publication Critical patent/JPS5264887A/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
    • H01S5/12—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 the resonator having a periodic structure, e.g. in distributed feedback [DFB] 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 obtain a laser having monchromaticity inherent to distribution feedback type laser and highly resistant to temperature variation by causing the light emitting spectrum peak wavelength of an active medium in gain region or photoconductive region to have large periodic variation.
JP50140220A 1975-11-25 1975-11-25 Distribution feedback type laser Pending JPS5264887A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50140220A JPS5264887A (en) 1975-11-25 1975-11-25 Distribution feedback type laser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50140220A JPS5264887A (en) 1975-11-25 1975-11-25 Distribution feedback type laser

Publications (1)

Publication Number Publication Date
JPS5264887A true JPS5264887A (en) 1977-05-28

Family

ID=15263691

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50140220A Pending JPS5264887A (en) 1975-11-25 1975-11-25 Distribution feedback type laser

Country Status (1)

Country Link
JP (1) JPS5264887A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5077752A (en) * 1989-06-30 1991-12-31 Optical Measurement Technology Development Co., Ltd. Semiconductor laser

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5077752A (en) * 1989-06-30 1991-12-31 Optical Measurement Technology Development Co., Ltd. Semiconductor laser

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