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US4803695A
Expired / Lapsed
US
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Semiconductor laser apparatus having an external reflecting means
Assignee: Sharp Corp
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Filing: 1986-06-13
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Granted: 1989-02-07
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Expires: 2006-06-13
Abstract
Abstract A semiconductor laser apparatus comprising a semiconductor laser device and a semiconductor device, both of which are fixed on a single mounting base with a spacing of several mm or less therebetween in such a manner that one of the side faces of said semiconductor device faces a laser-emitting facet of said semiconductor laser device in a parallel manner, the side face of said semiconductor device being a facet, at least a part of which is coated with a reflecting dielectric film functioning so as to have laser light from said semiconductor laser device return to said semiconductor laser device therefrom.
Inventors
- 👤 Osamu Yamamoto
- 👤 Hiroshi Hayashi
- 👤 Saburo Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:00
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/10; H01S5/14
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
101 words
A semiconductor laser apparatus comprising a semiconductor laser device and a semiconductor device, both of which are fixed on a single mounting base with a spacing of several mm or less therebetween in such a manner that one of the side faces of said semiconductor device faces a laser-emitting facet of said semiconductor laser device in a parallel manner, the side face of said semiconductor device being a facet, at least a part of which is coated with a reflecting dielectric film functioning so as to have laser light from said semiconductor laser device return to said semiconductor laser device therefrom.
Claim 2
Dependent Claim
101 words
A semiconductor laser apparatus comprising a semiconductor laser device and a semiconductor device, both of which are fixed on a single mounting base with a spacing of several mm or less therebetween in such a manner that one of the side faces of said semiconductor device faces a laser-emitting facet of said semiconductor laser device in a parallel manner, the side face of said semiconductor device being a facet, at least a part of which is coated with a reflecting dielectric film functioning so as to have laser light from said semiconductor laser device return to said semiconductor laser device therefrom.
Claim 3
Dependent Claim
28 words
A semiconductor laser apparatus according to claim 1, wherein said semiconductor device functions as a light detector detecting the intensity of laser light from said semiconductor laser device.
References Cited (Backward Citations)
DE1301750B
Cited
US4338577A
Cited
JPS5414180A
Cited
JPS58111391A
Cited
EP0090485A1
Cited
US4675873A
Cited
JPH111391A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-07 | 1992-08-08 | 1993-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-07 | 1996-08-08 | 1997-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-07 | 2000-08-08 | 2001-02-07 | $7700.00 | Window Closed / Lapsed |