JPS54993A - Semiconductor laser unit - Google Patents

Semiconductor laser unit

Info

Publication number
JPS54993A
JPS54993A JP6577977A JP6577977A JPS54993A JP S54993 A JPS54993 A JP S54993A JP 6577977 A JP6577977 A JP 6577977A JP 6577977 A JP6577977 A JP 6577977A JP S54993 A JPS54993 A JP S54993A
Authority
JP
Japan
Prior art keywords
semiconductor laser
laser unit
refrection
simplify
formation
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.)
Granted
Application number
JP6577977A
Other languages
Japanese (ja)
Other versions
JPS5440908B2 (en
Inventor
Nobuo Matsumoto
Kenji Kumabe
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 JP6577977A priority Critical patent/JPS54993A/en
Publication of JPS54993A publication Critical patent/JPS54993A/en
Publication of JPS5440908B2 publication Critical patent/JPS5440908B2/ja
Granted 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
    • H01S5/028—Coatings ; Treatment of the laser facets, e.g. etching, passivation layers or reflecting layers

Abstract

PURPOSE:To simplify the oscillating longitudinal mode, by making the refrection rate dependent on the wave length, through the formation of dielectric film having a given thickness at least at one end surface of a semiconductor laser crystal.
JP6577977A 1977-06-06 1977-06-06 Semiconductor laser unit Granted JPS54993A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6577977A JPS54993A (en) 1977-06-06 1977-06-06 Semiconductor laser unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6577977A JPS54993A (en) 1977-06-06 1977-06-06 Semiconductor laser unit

Publications (2)

Publication Number Publication Date
JPS54993A true JPS54993A (en) 1979-01-06
JPS5440908B2 JPS5440908B2 (en) 1979-12-05

Family

ID=13296856

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6577977A Granted JPS54993A (en) 1977-06-06 1977-06-06 Semiconductor laser unit

Country Status (1)

Country Link
JP (1) JPS54993A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02241075A (en) * 1989-03-15 1990-09-25 Matsushita Electric Ind Co Ltd Semiconductor laser
JPH0685403A (en) * 1991-12-20 1994-03-25 American Teleph & Telegr Co <Att> Semiconductor laser

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5197390A (en) * 1975-02-21 1976-08-26 HANDOTAIREEZASOSHI
JPS51120690A (en) * 1975-04-16 1976-10-22 Hitachi Ltd Manufacturing method for semiconductor apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5197390A (en) * 1975-02-21 1976-08-26 HANDOTAIREEZASOSHI
JPS51120690A (en) * 1975-04-16 1976-10-22 Hitachi Ltd Manufacturing method for semiconductor apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02241075A (en) * 1989-03-15 1990-09-25 Matsushita Electric Ind Co Ltd Semiconductor laser
JPH0685403A (en) * 1991-12-20 1994-03-25 American Teleph & Telegr Co <Att> Semiconductor laser

Also Published As

Publication number Publication date
JPS5440908B2 (en) 1979-12-05

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