Patent US4712220A successfully refreshed from Google Patents.
US4712220A
Expired / Lapsed
US
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Multiple laser arrangement
Assignee: Siemens AG
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Filing: 1986-06-27
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Granted: 1987-12-08
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Expires: 2006-06-27
Abstract
Abstract In a multiple laser arrangement (1) with a plurality of phase-coupled laser diodes with lateral extremities (2, 3) of the multiple laser arrangement (1) including decoupling means for improving the output radiation of the laser arrangement. An absorbent material (4) or a synthetic material is provided at the lateral extremities (2, 3) for the purpose of reducing undesired transverse modes or ring modes.
Inventors
- 👤 Johann Luft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:16
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/40; H01S5/4025; H01S5/4031
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
42 words
A multiple laser arrangement including a plurality of phase-coupled laser diodes with lateral extremities of the multiple laser arrangement characterized by a material for absorbing undesired transverse modes or ring modes is located at the lateral extremities of the multiple laser arrangement.
Claim 2
Dependent Claim
42 words
A multiple laser arrangement including a plurality of phase-coupled laser diodes with lateral extremities of the multiple laser arrangement characterized by a material for absorbing undesired transverse modes or ring modes is located at the lateral extremities of the multiple laser arrangement.
Claim 3
Dependent Claim
47 words
A multiple laser arrangement according to claim 1, characterized by the index of refraction of the absorbent material is matched with the index of refraction that is provided at the lateral extremities with the multiple laser arrangement for improving decoupling of undesired transverse modes and ring modes.
Claim 4
Dependent Claim
14 words
A multiple laser arrangement according to claim 2, wherein the absorbent material includes germamium.
Claim 5
Dependent Claim
14 words
A multiple laser arrangement according to claim 2, wherein the absorbent material contains silicon.
Claim 6
Dependent Claim
16 words
A multiple laser arrangement according to claim 2, wherein the absorbent material contains indium arsenide (InAs).
Claim 7
Dependent Claim
35 words
A multiple laser arrangement according to claim 2, wherein the absorbent material contains a material whose energy band gap is smaller than that of the material of the lateral extremity of the multiple laser arrangement.
Claim 8
Dependent Claim
16 words
A multiple laser arrangement according to claim 1, wherein the absorbent material includes a semiconductor material.
Claim 9
Dependent Claim
14 words
A multiple laser arrangement according to claim 7, wherein the absorbent material includes germamium.
Claim 10
Dependent Claim
14 words
A multiple laser arrangement according to claim 7, wherein the absorbent material contains silicon.
Claim 11
Dependent Claim
16 words
A multiple laser arrangement according to claim 7, wherein the absorbent material contains indium arsenide (InAs).
Claim 12
Dependent Claim
14 words
A multiple laser arrangement according to claim 7, wherein the absorbent material is evaporated.
Claim 13
Dependent Claim
14 words
A multiple laser arrangement according to claim 7, wherein the absorbent material is sputtered.
Claim 14
Dependent Claim
14 words
A multiple laser arrangement according to claim 1, wherein the absorbent material includes germamium.
Claim 15
Dependent Claim
14 words
A multiple laser arrangement according to claim 1, wherein the absorbent material contains silicon.
Claim 16
Dependent Claim
16 words
A multiple laser arrangement according to claim 1, wherein the absorbent material contains indium arsenide (InAs).
Claim 17
Dependent Claim
35 words
A multiple laser arrangement according to claim 1, wherein the absorbent material contains a material whose energy band gap is smaller than that of the material of the lateral extremity of the multiple laser arrangement.
Claim 18
Dependent Claim
14 words
A multiple laser arrangement according to claim 16, wherein the absorbent material is evaporated.
Claim 19
Dependent Claim
14 words
A multiple laser arrangement according to claim 16, wherein the absorbent material is sputtered.
Claim 20
Dependent Claim
14 words
A multiple laser arrangement according to claim 1, wherein the absorbent material is evaporated.
Claim 21
Dependent Claim
14 words
A multiple laser arrangement according to claim 1, wherein the absorbent material is sputtered.
Claim 22
Dependent Claim
43 words
A multiple laser arrangement including a plurality of phase-coupled laser diodes with lateral extremities of the multiple laser arrangement characterized by a synthetic material is applied to the lateral extremities of the multiple laser arrangement for absorbing undesired transverse modes or ring modes.
Claim 23
Dependent Claim
43 words
A multiple laser arrangement including a plurality of phase-coupled laser diodes with lateral extremities of the multiple laser arrangement characterized by a synthetic material is applied to the lateral extremities of the multiple laser arrangement for absorbing undesired transverse modes or ring modes.
Claim 24
Dependent Claim
16 words
A multiple laser arrangement according to claim 21, wherein the absorbent material includes a semiconductor material.
Claim 25
Dependent Claim
16 words
A multiple laser arrangement according to claim 22, wherein the absorbent material contains indium arsenide (InAs).
Claim 26
Dependent Claim
14 words
A multiple laser arrangement according to claim 21, wherein the absorbent material includes germamium.
Claim 27
Dependent Claim
14 words
A multiple laser arrangement according to claim 21, wherein the absorbent material contains silicon.
Claim 28
Dependent Claim
16 words
A multiple laser arrangement according to claim 21, wherein the absorbent material contains indium arsenide (InAs).
Claim 29
Dependent Claim
35 words
A multiple laser arrangement according to claim 21, wherein the absorbent material contains a material whose energy band gap is smaller than that of the material of the lateral extremity of the multiple laser arrangement.
Claim 30
Dependent Claim
41 words
A multiple laser arrangement according to claim 21, wherein the synthetic material has an index of refraction matched to that of the material of the lateral extremities of the multiple laser arrangement for the purpose of decoupling the undesired radiation modes.
References Cited (Backward Citations)
US3531735A
Cited
US3701044A
Cited
EP0010949A2
Cited
EP0064339A1
Cited
US4503541A
Cited
US4594719A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-07 | 1991-06-08 | 1991-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-07 | 1995-06-08 | 1995-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-07 | 1999-06-08 | 1999-12-08 | $7700.00 | Window Closed / Lapsed |