JPS57126188A - Laser device - Google Patents

Laser device

Info

Publication number
JPS57126188A
JPS57126188A JP1058381A JP1058381A JPS57126188A JP S57126188 A JPS57126188 A JP S57126188A JP 1058381 A JP1058381 A JP 1058381A JP 1058381 A JP1058381 A JP 1058381A JP S57126188 A JPS57126188 A JP S57126188A
Authority
JP
Japan
Prior art keywords
cores
lines
betam
betan
length
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
JP1058381A
Other languages
Japanese (ja)
Inventor
Kenjiyu Otsuka
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 JP1058381A priority Critical patent/JPS57126188A/en
Publication of JPS57126188A publication Critical patent/JPS57126188A/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
    • H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
    • H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar
    • H01S5/4031—Edge-emitting structures
    • H01S5/4043—Edge-emitting structures with vertically stacked active layers

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Lasers (AREA)
  • Semiconductor Lasers (AREA)

Abstract

PURPOSE:To obtain a light beam with high power and sharp directivity by a method wherein a plurality of light activated lines are arranged near to each other so as to have mutual coupling in electromagnetic wave in a solid medium consisting of compound semiconductor, and in addition length of these lines are prefered in accordance with a number of lines. CONSTITUTION:In a clad region 1 consisting of solid medium of InGaAsP system, for example five cores 21-25 of active laser medium consisting of InGaAsP system is buried. In this arrangement shapes and measures of cross section of cores 21-25 are selected so as to propagate a fundamental mode of light beam, and taking them in equal lengths in addition, they are placed near to each other with a spacing (d) so as to have a coupling in electromagnetic wave, and cut surfaces are used as end surfaces 3 and 4. In this constitution a length (l) expressed in equations is selected in accordance with the number of cores N, where the length of core (l), the coupling coefficient between adjacent lines is C, the difference between propagation constants is DELTAbeta when the number of cores is two, and when it is 2-5, DELTAbeta=beta1-betam=betan-betam, betan=betam (2<=m<=N-1, propagation constant betan).
JP1058381A 1981-01-27 1981-01-27 Laser device Pending JPS57126188A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1058381A JPS57126188A (en) 1981-01-27 1981-01-27 Laser device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1058381A JPS57126188A (en) 1981-01-27 1981-01-27 Laser device

Publications (1)

Publication Number Publication Date
JPS57126188A true JPS57126188A (en) 1982-08-05

Family

ID=11754263

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1058381A Pending JPS57126188A (en) 1981-01-27 1981-01-27 Laser device

Country Status (1)

Country Link
JP (1) JPS57126188A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59208889A (en) * 1983-05-12 1984-11-27 アメリカン・テレフォン・アンド・テレグラフ・カムパニー Semiconductor laser
JPS621289A (en) * 1985-06-11 1987-01-07 Res Dev Corp Of Japan Solid-state laser oscillator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59208889A (en) * 1983-05-12 1984-11-27 アメリカン・テレフォン・アンド・テレグラフ・カムパニー Semiconductor laser
JPS621289A (en) * 1985-06-11 1987-01-07 Res Dev Corp Of Japan Solid-state laser oscillator

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