JPS5646589A - Semiconductor laser device - Google Patents

Semiconductor laser device

Info

Publication number
JPS5646589A
JPS5646589A JP12269979A JP12269979A JPS5646589A JP S5646589 A JPS5646589 A JP S5646589A JP 12269979 A JP12269979 A JP 12269979A JP 12269979 A JP12269979 A JP 12269979A JP S5646589 A JPS5646589 A JP S5646589A
Authority
JP
Japan
Prior art keywords
laser
semiconductor laser
cut surface
optical fiber
light emitted
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
JP12269979A
Other languages
Japanese (ja)
Inventor
Kenichi Sato
Koichi Asatani
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP12269979A priority Critical patent/JPS5646589A/en
Publication of JPS5646589A publication Critical patent/JPS5646589A/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
    • 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/105—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length

Abstract

PURPOSE:To form a semiconductor laser device adapted for an optical fiber analog transmission system by feeding back a part of light emitted from a semiconductor laser to the active layer of the laser through a reflector vibrating as externally provided, thereby reducing waveform distortion based on the variation of the spectrum pattern. CONSTITUTION:A semiconductor laser 1 is enclosed at both sides with a heat sink 2, the cut surfaces 10, 11 of both end faces of the laser 1 are exposed, and a semiconductor laser modulator circuit 8 is connected to the laser 1. Subsequently, a supersonic transducer 4 is secured through an adhesive layer 5 on a copper block 6, a reflector adhered with a gold electrode 3 operating as a reflecting mirror is prepared thereon, the electrode 3 is confronted with the cut surface 10, and is vibrated by a high frequency power supply 7. Further, an optical fiber 9 is confronted at the side of the cut surface 11. Thus, the light emitted from the cut surface 10 is reflected on the electrode 3, is partly fed back to the active layer of the laser 1, and the light emitted from the cut surface 11 is coupled to the optical fiber 9.
JP12269979A 1979-09-26 1979-09-26 Semiconductor laser device Pending JPS5646589A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12269979A JPS5646589A (en) 1979-09-26 1979-09-26 Semiconductor laser device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12269979A JPS5646589A (en) 1979-09-26 1979-09-26 Semiconductor laser device

Publications (1)

Publication Number Publication Date
JPS5646589A true JPS5646589A (en) 1981-04-27

Family

ID=14842415

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12269979A Pending JPS5646589A (en) 1979-09-26 1979-09-26 Semiconductor laser device

Country Status (1)

Country Link
JP (1) JPS5646589A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60205457A (en) * 1984-03-29 1985-10-17 Matsushita Electric Ind Co Ltd Electrophotographic sensitive body
JPS63246883A (en) * 1987-04-02 1988-10-13 Agency Of Ind Science & Technol Semiconductor laser device
JP2008129315A (en) * 2006-11-21 2008-06-05 Seiko Epson Corp Light source apparatus and image display
JP2008187175A (en) * 2007-01-26 2008-08-14 Samsung Electronics Co Ltd Speckle reduction laser and laser display apparatus having the same
JP2011128639A (en) * 2011-01-26 2011-06-30 Mitsubishi Electric Corp Speckle removing light source and lighting device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60205457A (en) * 1984-03-29 1985-10-17 Matsushita Electric Ind Co Ltd Electrophotographic sensitive body
JPS63246883A (en) * 1987-04-02 1988-10-13 Agency Of Ind Science & Technol Semiconductor laser device
JP2008129315A (en) * 2006-11-21 2008-06-05 Seiko Epson Corp Light source apparatus and image display
JP2008187175A (en) * 2007-01-26 2008-08-14 Samsung Electronics Co Ltd Speckle reduction laser and laser display apparatus having the same
JP2011128639A (en) * 2011-01-26 2011-06-30 Mitsubishi Electric Corp Speckle removing light source and lighting device

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