US5163058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor laser pump source
Assignee: BAE Systems Electronics Ltd
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Filing: 1991-05-29
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Granted: 1992-11-10
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Expires: 2011-05-29
Abstract
Abstract A laser source for pumping an optical device which requires for its operation a significant amount of light power, the source comprising a semiconductor array (11) for providing a plurality of spaced apart light beams at different wavelengths, an optical assembly (14, 15, 16) for focussing the light beams into an optical waveguide (19), the optical waveguide (19) being coupled to the optical device.
Inventors
- 👤 Mark C. Farries
- 👤 Andrew C. Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:23
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4249; G02B6/425; G02B6/4246; H; H01; H01S; H01S3/00; H01S3/09; H01S3/091; H01S3/094; H01S3/094003; H01S3/0941; G02F; G02F1/00; G02F1/01; G02F1/21; G02F1/211; H01S5/00; H01S5/40; H01S5/4025
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
73 words
A laser pump source for pumping an optical device which requires for its operation a significant amount of light power, the source comprising a semiconductor laser array for emitting a plurality of spaced apart light beams at different wavelengths, and an optical assembly for forming a laser cavity external of said laser array and for focussing the emitted light beams into an optical waveguide, the optical waveguide being coupled to said optical device.
Claim 2
Dependent Claim
73 words
A laser pump source for pumping an optical device which requires for its operation a significant amount of light power, the source comprising a semiconductor laser array for emitting a plurality of spaced apart light beams at different wavelengths, and an optical assembly for forming a laser cavity external of said laser array and for focussing the emitted light beams into an optical waveguide, the optical waveguide being coupled to said optical device.
Claim 3
Dependent Claim
29 words
A laser source as claimed in claim 1, wherein the optical device is selected from the group consisting of a fibre laser, a fibre switch and an optical amplifier.
Claim 4
Dependent Claim
25 words
A laser source as claimed in claim 2, wherein the optical device comprises an amplifier which is constituted by an Erbium doped monomode optical fibre.
Claim 5
Dependent Claim
21 words
A laser source as claimed in claim 1, wherein the semiconductor array comprises a single integrated device having a layered structure.
Claim 6
Dependent Claim
41 words
A laser source as claimed in claim 1, wherein said optical assembly includes reflection means for forming the laser cavity external of said semiconductor means so that the light beams emitted by said semiconductor array is reflected to control resonant emission.
Claim 7
Dependent Claim
21 words
A laser source as claimed in claim 5, wherein the reflection means comprises reflection enhancement means associated with the optical waveguide.
Claim 8
Dependent Claim
32 words
A laser source as claimed in claim 5, wherein the reflection means comprises a reflective mirror coupled to the optical waveguide by means of a coupling device comprising spaced apart waveguide arms.
Claim 9
Dependent Claim
22 words
A laser source as claimed in claim 5, wherein the reflection means comprises a fibre loop mirror coupled to the optical waveguide.
Claim 10
Dependent Claim
16 words
A laser source as claimed in claim 1, wherein the optical waveguide comprises monomode optical fibre.
Claim 11
Dependent Claim
30 words
A laser source as claimed in claim 1, wherein the optical assembly includes a diffraction means coupled to said semiconductor array and said optical waveguide by collimating and focussing means.
Claim 12
Dependent Claim
94 words
A laser pump source comprising a semiconductor laser array for emitting a plurality of spaced apart light beams at different wavelengths, an optical assembly for focussing the light beams into an end of an optical waveguide, said optical assembly including reflection means for forming a laser cavity external of said semiconductor array so that the light beams emitted by said semiconductor array is reflected to control resonant emission, the reflection means comprising a mirror means coupled to the optical waveguide by coupling means at a point remote from said end of the optical waveguide.
Claim 13
Dependent Claim
94 words
A laser pump source comprising a semiconductor laser array for emitting a plurality of spaced apart light beams at different wavelengths, an optical assembly for focussing the light beams into an end of an optical waveguide, said optical assembly including reflection means for forming a laser cavity external of said semiconductor array so that the light beams emitted by said semiconductor array is reflected to control resonant emission, the reflection means comprising a mirror means coupled to the optical waveguide by coupling means at a point remote from said end of the optical waveguide.
Claim 14
Dependent Claim
32 words
A laser source as claimed in claim 11, wherein the reflection means comprises a reflective mirror coupled to the optical waveguide by means of the coupling means comprising spaced apart waveguide arms.
Claim 15
Dependent Claim
21 words
A laser source as claimed in claim 11, wherein the reflection means comprises a loop mirror coupled to the optical waveguide.
Claim 16
Dependent Claim
29 words
A laser source as claimed in claim 11, wherein the optical assembly includes diffraction means coupled to said semiconductor array and said optical waveguide by collimating and focussing means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-11-10 | 1996-05-11 | 1996-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-10 | 2000-05-11 | 2000-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-10 | 2004-05-11 | 2004-11-10 | $7700.00 | Window Closed / Lapsed |