US4122412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magneto-optically tuned lasers
Assignee: United States Department of the Navy
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Filing: 1977-04-18
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Granted: 1978-10-24
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Expires: 1997-04-18
Abstract
Abstract Stripe-domain light deflectors are used within a lasing cavity. Magnetic trol of the deflectors permits tuning of the laser light to any wavelength in the range of light present.
Inventors
- 👤 Richard Swart Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:11
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/10; H01S3/105; H01S3/1055; H01S3/106; H01S3/1066
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
138 words
A rapidly tunable monochromatic laser comprising: a resonant cavity with a total reflection end and a partially reflective end so as to define an optical path between said ends; a lasing element with an axis which is placed in said resonant cavity such that said axis is along said optical path for emitting predetemined light waves along said axis; a pump source in proximity to said lasing element for driving said lasing element to emit light; a stripe-domain light deflector, SDLD, located in the optical path between said lasing element and said total reflection end for directing said emitting light by interaction with the magnetic field in said SDLD as it passes through said SDLD; and electrical means operatively attached to said SDLD for varying said magnetic field of said SDLD so as to tune said emitted light.
Claim 2
Dependent Claim
138 words
A rapidly tunable monochromatic laser comprising: a resonant cavity with a total reflection end and a partially reflective end so as to define an optical path between said ends; a lasing element with an axis which is placed in said resonant cavity such that said axis is along said optical path for emitting predetemined light waves along said axis; a pump source in proximity to said lasing element for driving said lasing element to emit light; a stripe-domain light deflector, SDLD, located in the optical path between said lasing element and said total reflection end for directing said emitting light by interaction with the magnetic field in said SDLD as it passes through said SDLD; and electrical means operatively attached to said SDLD for varying said magnetic field of said SDLD so as to tune said emitted light.
Claim 3
Dependent Claim
21 words
A rapidly tunable monochromatic laser as defined in claim 1 wherein the total reflection end is an adjustable diffraction reflection grating.
Claim 4
Dependent Claim
20 words
A rapidly tunable monochromatic laser as defined in claim 2 wherein said adjustable diffraction reflection grating is a blazed grating.
Claim 5
Dependent Claim
18 words
A rapidly tunable monochromatic laser as described in claim 1 where the lasing element is an organic dye.
Claim 6
Dependent Claim
162 words
A rapidly tunable monochromatic laser comprising: a resonant cavity with a partially reflective end and an adjustable total reflection end so as to define an optical path between said ends; a lasing element with an axis which is placed in said resonant cavity such that said axis is along said optical path for emitting predetermined light waves along said axis; a pump source in proximity to said lasing element for driving said lasing element to emit light; a strip-domain light deflector mounted on the resonant cavity side of said total reflection end for directing said emitted light by interaction with the magnetic field in said SDLD as said emitted light passes through said SDLD so that combined deflection of light by the magnetic field and the orientaton of said adjustable total reflection end cause a predetermined wavelength to resonate; and electrical means operatively attached to said SDLD for varying said magnetic field of said SDLD so as to tune said emitted light.
Claim 7
Dependent Claim
162 words
A rapidly tunable monochromatic laser comprising: a resonant cavity with a partially reflective end and an adjustable total reflection end so as to define an optical path between said ends; a lasing element with an axis which is placed in said resonant cavity such that said axis is along said optical path for emitting predetermined light waves along said axis; a pump source in proximity to said lasing element for driving said lasing element to emit light; a strip-domain light deflector mounted on the resonant cavity side of said total reflection end for directing said emitted light by interaction with the magnetic field in said SDLD as said emitted light passes through said SDLD so that combined deflection of light by the magnetic field and the orientaton of said adjustable total reflection end cause a predetermined wavelength to resonate; and electrical means operatively attached to said SDLD for varying said magnetic field of said SDLD so as to tune said emitted light.
Claim 8
Dependent Claim
18 words
A rapidly tunable monochromatic laser as defined in claim 5 wherein the lasing element is an organic dye.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-23 | 1982-04-24 | 1982-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-23 | 1986-04-24 | 1986-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-23 | 1990-04-24 | 1990-10-24 | $7700.00 | Window Closed / Lapsed |