US4028636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acousto-optical deflector tuned organic dye laser
Assignee: United States Department of the Navy
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Filing: 1976-03-08
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Granted: 1977-06-07
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Expires: 1996-03-08
Abstract
Abstract An acousto-optical deflector tuned organic dye laser wherein the tuning eent comprises a diffraction grating and a Bragg diffraction cell driven by an RF responsive, ultrasonic transducer. An optional angle multiplier may be used between the cell and the grating.
Inventors
- 👤 Richard Swart Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:50
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/08; H01S3/08004; H01S3/08009; H01S3/10; H01S3/106; H01S3/1068
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
98 words
A laser tuning system comprising: a laser cavity having two ends and including a laser cell emitting a band of laser light frequencies; a laser output mirror bounding one end of said cavity; an acousto-optic diffraction cell positioned in said laser cavity to diffract said laser light at an angle of diffraction; means connected to said acousto-optic diffraction cell for controlling the angle of diffraction of the laser light; and means at the other end of said laser cavity for retroreflecting, in response to said angle of diffraction, only one frequency of said band of laser light frequencies.
Claim 2
Dependent Claim
98 words
A laser tuning system comprising: a laser cavity having two ends and including a laser cell emitting a band of laser light frequencies; a laser output mirror bounding one end of said cavity; an acousto-optic diffraction cell positioned in said laser cavity to diffract said laser light at an angle of diffraction; means connected to said acousto-optic diffraction cell for controlling the angle of diffraction of the laser light; and means at the other end of said laser cavity for retroreflecting, in response to said angle of diffraction, only one frequency of said band of laser light frequencies.
Claim 3
Dependent Claim
20 words
The system of claim 1 wherein said acousto-optic diffraction cell is oriented at the Bragg angle to said laser light.
Claim 4
Dependent Claim
14 words
The system of claim 1 wherein said retroreflecting means is a reflective diffraction grating.
Claim 5
Dependent Claim
26 words
The system of claim 3 wherein said system further includes means positioned between said cell and said grating for increasing the angular diffraction of the beam.
Claim 6
Dependent Claim
16 words
The system of claim 4 wherein said angular increasing means is an angle multiplier lens system.
Claim 7
Dependent Claim
13 words
The system of claim 5 wherein said laser is an organic dye laser.
References Cited (Backward Citations)
US3613024A
Cited
US3684979A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-06 | 1980-12-06 | 1981-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-06 | 1984-12-06 | 1985-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-06 | 1988-12-06 | 1989-06-07 | $7700.00 | Window Closed / Lapsed |