US3903483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dye laser for holographic applications
Assignee: United States Department of the Navy
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Filing: 1974-01-07
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Granted: 1975-09-02
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Expires: 1994-01-07
Abstract
Abstract A dye laser for holographic applications is described wherein a Q-switched ruby laser is used to pump the dye laser using Rhodamine-6G as the dye. The dye laser is pumped with a Qswitched ruby laser having its 6,943 A output beam frequencydoubled with a KDP crystal. The light beam of 3,472 A so obtained is applied to pump the dye laser in a longitudinal arrangement using a dispersing prism. The resultant tunable dye laser output is then applied for recording holograms. Multi-stage systems and cascade spectrum narrowing of the dye laser output are used to increase the overall efficiency for holographic applications.
Inventors
- 👤 Peter Shajenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:44
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/09; H01S3/091; H01S3/094; H01S3/094034
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
119 words
A dye laser system comprising: a laser means for providing a relatively narrow beam of radiant energy; means for frequency doubling said beam of radiant energy and thus obtaining a component of said beam of radiant energy having the wavelength half the wavelength of said beam of radiant energy; dispersion means for separating said component of said beam of radiant energy from the remaining portion of said beam of radiant energy; a dye cell adapted to be excited by said component of said beam of radiant energy; means for tuning said dye cell; and means for successively frequency doubling and using the frequency-doubled components of the remaining portion of said beam of radiant energy for exciting said dye cell.
Claim 2
Dependent Claim
119 words
A dye laser system comprising: a laser means for providing a relatively narrow beam of radiant energy; means for frequency doubling said beam of radiant energy and thus obtaining a component of said beam of radiant energy having the wavelength half the wavelength of said beam of radiant energy; dispersion means for separating said component of said beam of radiant energy from the remaining portion of said beam of radiant energy; a dye cell adapted to be excited by said component of said beam of radiant energy; means for tuning said dye cell; and means for successively frequency doubling and using the frequency-doubled components of the remaining portion of said beam of radiant energy for exciting said dye cell.
Claim 3
Dependent Claim
25 words
The dye laser system of claim 1 wherein said laser means for providing a relatively narrow beam of radiant energy is a Q-switched ruby laser.
Claim 4
Dependent Claim
17 words
The dye laser system of claim 2 wherein said means for frequency doubling includes a KDP crystal.
Claim 5
Dependent Claim
15 words
The dye laser system of claim 3 wherein said dispersion means comprises a dispersing prism.
Claim 6
Dependent Claim
35 words
The dye laser system of claim 4 wherein said dye cell further includes a generally cylindrical cell adapted to contain an organic dye to be excited by said component of said beam of radiant energy.
Claim 7
Dependent Claim
22 words
The dye laser system of claim 5 wherein said organic dye adapted to be enclosed in said generally cylindrical cell is Rhodamine-6G.
Claim 8
Dependent Claim
29 words
The dye laser system of claim 6 wherein said generally cylindrical cell is adapted to be fitted with Brewster windows at ends thereof to reduce lasing due to reflection.
Claim 9
Dependent Claim
22 words
The dye laser system of claim 7 wherein means for tuning said dye cell comprises an echelle grating and a Fabry-Perot etalon.
Claim 10
Dependent Claim
39 words
The dye laser system of claim 8 wherein said means for successively doubling and using the frequency-doubled components of the remaining portion of said beam of radiant energy includes plurality of KDP crystals and a plurality of reflecting mirrors.
Claim 11
Dependent Claim
154 words
A dye laser system for holographic applications comprising: a laser means for obtaining a relatively narrow beam of radiant energy; means for frequency doubling said beam of radiant energy; means for separating the frequency-doubled component from the remaining portion of said beam of radiant energy; a first dye cell adapted to be excited by said frequency doubled component of said beam of radiant energy; means for tuning said first dye cell; means for frequency doubling the remaining portion of said beam of radiant energy; means for separating the frequency-doubled component of the remaining portion of said beam of radiant energy from the remaining portion thereof; a second dye cell adapted to be excited by the frequency-doubled component of the remaining portion of said beam of radiant energy; means for tuning said second dye cell; and means for coupling said first dye cell and said second dye cell to form a coupled dye laser oscillator.
Claim 12
Dependent Claim
154 words
A dye laser system for holographic applications comprising: a laser means for obtaining a relatively narrow beam of radiant energy; means for frequency doubling said beam of radiant energy; means for separating the frequency-doubled component from the remaining portion of said beam of radiant energy; a first dye cell adapted to be excited by said frequency doubled component of said beam of radiant energy; means for tuning said first dye cell; means for frequency doubling the remaining portion of said beam of radiant energy; means for separating the frequency-doubled component of the remaining portion of said beam of radiant energy from the remaining portion thereof; a second dye cell adapted to be excited by the frequency-doubled component of the remaining portion of said beam of radiant energy; means for tuning said second dye cell; and means for coupling said first dye cell and said second dye cell to form a coupled dye laser oscillator.
Claim 13
Dependent Claim
32 words
The dye laser system of claim 10 which further includes means for successive frequency doubling, separating, exciting a plurality of dye cells in succession and obtaining a multiple wavelength dye laser oscillators.
References Cited (Backward Citations)
US3753146A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |