US3902137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-optic diffraction grating tuned laser
Assignee: United States Department of the Navy
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Filing: 1974-10-29
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Granted: 1975-08-26
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Expires: 1994-10-29
Abstract
Abstract An electro-optic diffraction grating tuned laser comprising a laser medium, output mirror, retro-reflective grating and an electro-optic diffraction grating beam deflector positioned between the laser medium and the reflective diffraction grating. An optional angle multiplier may be used between the electrooptic diffraction grating and the reflective grating.
Inventors
- 👤 Richard Swart Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:58
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/10; H01S3/106; H01S3/107; H01S3/1075; H01S3/05; H01S3/08; H01S3/08004; H01S3/08009; H01S3/105; H01S3/1055
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
100 words
A wavelength tuned laser comprising; an active laser medium, means for pumping said medium for producing a population inversion therein; resonator means positioned about said medium for stimulating a beam of radiation from said medium, said resonator means comprising a partially reflective output coupling reflector located adjacent one end of said medium and a diffractive retroreflector adjacent the opposite end of said medium, an electro-optic diffraction means positioned between said diffractive retroreflector and said medium, modulating means coupled to said electro-optic means for setting up a diffraction pattern therein for deflecting said beam across the face of said diffractive retroreflector.
Claim 2
Dependent Claim
100 words
A wavelength tuned laser comprising; an active laser medium, means for pumping said medium for producing a population inversion therein; resonator means positioned about said medium for stimulating a beam of radiation from said medium, said resonator means comprising a partially reflective output coupling reflector located adjacent one end of said medium and a diffractive retroreflector adjacent the opposite end of said medium, an electro-optic diffraction means positioned between said diffractive retroreflector and said medium, modulating means coupled to said electro-optic means for setting up a diffraction pattern therein for deflecting said beam across the face of said diffractive retroreflector.
Claim 3
Dependent Claim
20 words
A wavelength tuned laser as set forth in claim 1 wherein: said reflecting means is a reflecting reflective diffraction grating.
Claim 4
Dependent Claim
23 words
A wave length tuned laser as set forth in claim 1 wherein; said electro-optical diffraction means comprises an electro-optical diffraction grating beam deflector.
Claim 5
Dependent Claim
32 words
A wavelength tuned laser as set forth in claim 1 and further including: means positioned between said electro-optic diffraction means and said reflecting means for increasing the angular diffraction of the beam.
Claim 6
Dependent Claim
19 words
A wavelength tuned laser as set forth in claim 4 wherein said means comprises: an angle multiplier lens system.
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |