US4380075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mode stable injection laser diode
Assignee: McDonnell Douglas Corp
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Filing: 1981-03-23
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Granted: 1983-04-12
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Expires: 2001-03-23
Abstract
Abstract High power operation in conjunction with excellent mode stability is rendered possible by a unique configuration comprising the use of two injection laser diode sections in a crossed-junction configuration.
Inventors
- 👤 Louis B. Allen, Jr.
- 👤 Herbert G. Koenig, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:13
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/40; H01S5/4025; H01S5/50; H01S5/5009; H01S5/5018; H01S5/5027
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
72 words
A semiconductor injection laser system comprising an input injection laser diode optically connected to an output injection laser diode wherein the central axes of the input diode and the output diode are substantially parallel and the plane of the junction of the input diode is rotated relative to the plane of the junction of the output diode at an angle sufficient to achieve mode stability in the laser output of the system.
Claim 2
Dependent Claim
72 words
A semiconductor injection laser system comprising an input injection laser diode optically connected to an output injection laser diode wherein the central axes of the input diode and the output diode are substantially parallel and the plane of the junction of the input diode is rotated relative to the plane of the junction of the output diode at an angle sufficient to achieve mode stability in the laser output of the system.
Claim 3
Dependent Claim
18 words
The system of claim 1 wherein the input diode and the output diode comprise stripe-geometry injection laser diodes.
Claim 4
Dependent Claim
35 words
The system of claim 2 wherein the laser diodes comprise P-N junction diodes fabricated from a material selected from the group consisting of gallium arsenide, gallium aluminum arsenide, other Group III-V compounds, and combinations thereof.
Claim 5
Dependent Claim
26 words
The system of claim 3 wherein the longitudinal axes of the stripes of the input and output diodes are centered on the centerline of the system.
Claim 6
Dependent Claim
17 words
The system of claim 1 wherein the angle of rotation is from about 45° to about 90°.
Claim 7
Dependent Claim
13 words
The system of claim 1 wherein the angle of rotation is approximately 90°.
Claim 8
Independent Claim
89 words
A method of operation of a semiconductor injection laser system wherein the system comprises an input injection laser diode optically connected to an output injection laser diode wherein the central axes of the input diode and the output diode are substantially parallel, and the plane of the junction of the input diode is rotated relative to the plane of the junction of the output diode at an angle sufficient to achieve mode stability in the laser output of the system comprising operating the system as a continuous wave system.
Claim 9
Independent Claim
89 words
A method of operation of a semiconductor injection laser system wherein the system comprises an input injection laser diode optically connected to an output injection laser diode wherein the central axes of the input diode and the output diode are substantially parallel, and the plane of the junction of the input diode is rotated relative to the plane of the junction of the output diode at an angle sufficient to achieve mode stability in the laser output of the system comprising operating the system as a continuous wave system.
Claim 10
Independent Claim
88 words
A method of operation of a semiconductor injection laser system wherein the system comprises an input injection laser diode optically connected to an output injection laser diode wherein the central axes of the input diode and the output diode are substantially parallel, and the plane of the junction of the input diode is rotated relative to the plane of the junction of the output diode at an angle sufficient to achieve mode stability in the laser output of the system comprising operating the system as a pulsed system.
Claim 11
Independent Claim
88 words
A method of operation of a semiconductor injection laser system wherein the system comprises an input injection laser diode optically connected to an output injection laser diode wherein the central axes of the input diode and the output diode are substantially parallel, and the plane of the junction of the input diode is rotated relative to the plane of the junction of the output diode at an angle sufficient to achieve mode stability in the laser output of the system comprising operating the system as a pulsed system.
Claim 12
Dependent Claim
19 words
The method of claim 7 or 8 wherein the angle of rotation is from about 45° to about 90°.
Claim 13
Dependent Claim
15 words
The method of claim 7 or 8 wherein the angle of rotation is approximately 90°.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-04-11 | 1986-10-11 | 1987-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-11 | 1990-10-11 | 1991-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-11 | 1994-10-11 | 1995-04-12 | $7700.00 | Window Closed / Lapsed |