EP0206745A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A semiconductor laser apparatus
Assignee: Sharp Corp
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Filing: 1986-06-17
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Granted: —
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Expires: 2006-06-17
Abstract
Abstract @ A semiconductor laser apparatus has a semiconductor laser chip (10) with a first light-emitting facet (25) and a second light-emitting facet containing an interference effect-creating means therein for creating an interference effect within the resonator(s) thereof, a laser light-reflecting means (23) for returning a part of the laser light emitted from the first light-emitting facet (25) of said semiconductor laser chip (10) to the first light-emitting facet (25), and a mounting base (21) on which said semiconductor laser chip (10) and said laser light-reflecting means (23) are fixed in a parallel manner.
Inventors
- 👤 Osamu Yamamoto
- 👤 Hiroshi Hayashi
- 👤 Saburo Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 15:13
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/10; H01S5/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
97 words
A semiconductor laser apparatus comprising: a semiconductor laser chip (10) having at least one resonator, a first light-emitting facet (25) and a second light-emitting facet, containing an interference effect-creating means therein for creating an interference effect within the or each resonator thereof; a laser light-reflecting means (23) for returning a part of the laser light emitted from the first light-emitting facet (25) of said semiconductor laser chip to the first light-emitting facet (25), and a mounting base (21) on which said semiconductor laser chip (10) and said laser light-reflecting means (23) are fixed in a parallel manner.
Claim 2
Dependent Claim
97 words
A semiconductor laser apparatus comprising: a semiconductor laser chip (10) having at least one resonator, a first light-emitting facet (25) and a second light-emitting facet, containing an interference effect-creating means therein for creating an interference effect within the or each resonator thereof; a laser light-reflecting means (23) for returning a part of the laser light emitted from the first light-emitting facet (25) of said semiconductor laser chip to the first light-emitting facet (25), and a mounting base (21) on which said semiconductor laser chip (10) and said laser light-reflecting means (23) are fixed in a parallel manner.
Claim 3
Dependent Claim
34 words
A semiconductor laser apparatus according to claim 1, wherein said interference effect-creating means is composed of an area of the active layer (14) having a different thickness in the central area of the resonator.
Claim 4
Dependent Claim
70 words
A semiconductor laser apparatus according to claim 1 or 2, wherein said interference effect-creating means is composed of resonators (40,41) having different cavity lengths in which a part of the waveguide in one resonator is common to that of the waveguide in the other resonator from the second light-emitting facet to the branching portion and the other parts of the waveguides in the resonators are branched at said branch portion.
References Cited (Backward Citations)
No citation records indexed.
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