JPS53115188A - Semiconductor laser - Google Patents

Semiconductor laser

Info

Publication number
JPS53115188A
JPS53115188A JP2920577A JP2920577A JPS53115188A JP S53115188 A JPS53115188 A JP S53115188A JP 2920577 A JP2920577 A JP 2920577A JP 2920577 A JP2920577 A JP 2920577A JP S53115188 A JPS53115188 A JP S53115188A
Authority
JP
Japan
Prior art keywords
semiconductor laser
refractive index
laser
semiconductor
active layer
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
JP2920577A
Other languages
Japanese (ja)
Inventor
Takashi Kajimura
Kazutoshi Saito
Noriyuki Shige
Michiharu Nakamura
Junichi Umeda
Masayoshi Kobayashi
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
Priority to GB226777A priority Critical patent/GB1537957A/en
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2920577A priority patent/JPS53115188A/en
Priority to US05/843,365 priority patent/US4176325A/en
Priority to GB43931/77A priority patent/GB1545194A/en
Priority to DE2747371A priority patent/DE2747371C3/en
Priority to NL7711664A priority patent/NL7711664A/en
Publication of JPS53115188A publication Critical patent/JPS53115188A/en
Pending legal-status Critical Current

Links

Landscapes

  • Semiconductor Lasers (AREA)

Abstract

PURPOSE: To realize a semiconductor laser of an extremely small beam divergent angle and good parallelism by so forming the laser that the effective refractive index of the active layer becomes smaller than the refractive index of third semiconductor layers.
COPYRIGHT: (C)1978,JPO&Japio
JP2920577A 1976-03-25 1977-03-18 Semiconductor laser Pending JPS53115188A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB226777A GB1537957A (en) 1976-03-25 1977-01-20 Welding of pipes
JP2920577A JPS53115188A (en) 1977-03-18 1977-03-18 Semiconductor laser
US05/843,365 US4176325A (en) 1976-10-22 1977-10-19 Semiconductor laser device
GB43931/77A GB1545194A (en) 1976-10-22 1977-10-21 Semiconductor laser device
DE2747371A DE2747371C3 (en) 1976-10-22 1977-10-21 Semiconductor laser
NL7711664A NL7711664A (en) 1976-10-22 1977-10-24 SEMICONDUCTOR LASER.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2920577A JPS53115188A (en) 1977-03-18 1977-03-18 Semiconductor laser

Publications (1)

Publication Number Publication Date
JPS53115188A true JPS53115188A (en) 1978-10-07

Family

ID=12269682

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2920577A Pending JPS53115188A (en) 1976-03-25 1977-03-18 Semiconductor laser

Country Status (1)

Country Link
JP (1) JPS53115188A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS48115U (en) * 1971-05-22 1973-01-05

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS48115U (en) * 1971-05-22 1973-01-05

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