Patent US4517675A successfully refreshed from Google Patents.
US4517675A
Expired / Lapsed
US
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Dye laser medium for subpicosecond laser pulse generation
Assignee: University of Rochester
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Filing: 1981-12-21
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Granted: 1985-05-14
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Expires: 2001-12-21
Abstract
Abstract Subpicosecond pulses less than 70 femtoseconds in duration are obtained with a synchronously pumped dye laser using a mixture of laser dye and a fast recovery saturable absorber which passes in a jet between folding mirrors in a laser cavity. The ratio of absorber to dye in the mixture is selected to compensate for dispersion effects in the laser medium which tend to limit the spectrum of the laser pulses and increase their duration.
Inventors
- 👤 Gerard Mourou
- 👤 II Theodore Sizer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:15
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/20; H01S3/213
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
88 words
For use in a synchronously pumped CW dye laser to generate pulses of subpicosecond duration, a laser medium consisting essentially of a mixture of laser dye and saturable absorber where the molecular ratio of absorber to dye is 3 to 50 to compensate for dispersion in said laser medium, and said laser dye being Rhodamine 6G and said absorber is 1,3 prime-diethyl-4,2 prime-quinolyoxacarbocyanide iodide, which is known as DQOCI, or wherein said mixture consists essentially of 5×10 4 M of Rhodamaine 6G and 3×10 -5 of said DQOCI.
Claim 2
Dependent Claim
88 words
For use in a synchronously pumped CW dye laser to generate pulses of subpicosecond duration, a laser medium consisting essentially of a mixture of laser dye and saturable absorber where the molecular ratio of absorber to dye is 3 to 50 to compensate for dispersion in said laser medium, and said laser dye being Rhodamine 6G and said absorber is 1,3 prime-diethyl-4,2 prime-quinolyoxacarbocyanide iodide, which is known as DQOCI, or wherein said mixture consists essentially of 5×10 4 M of Rhodamaine 6G and 3×10 -5 of said DQOCI.
Claim 3
Dependent Claim
24 words
The invention as set forth in claim 1 wherein said mixture is a solution of Rhodamine 6G and said DQOCI in ethylene glycol solvent.
Claim 4
Dependent Claim
75 words
A dye laser medium consisting essentially of a mixture of laser dye and saturable absorber where the molecular ratio of absorber to dye is 3 to 50 molar to compensate for dispersion in said medium, and said laser dye being Rhodamine 6G and said absorber being 1,3 prime-diethyl-4,2 prime-quinolyoxacarbocyanide iodide which is known as DQOCI, or wherein said mixture consists essentially of 5×10 -4 M of Rhodamaine 6G and 3×10 -5 M of said DQOCI.
Claim 5
Dependent Claim
75 words
A dye laser medium consisting essentially of a mixture of laser dye and saturable absorber where the molecular ratio of absorber to dye is 3 to 50 molar to compensate for dispersion in said medium, and said laser dye being Rhodamine 6G and said absorber being 1,3 prime-diethyl-4,2 prime-quinolyoxacarbocyanide iodide which is known as DQOCI, or wherein said mixture consists essentially of 5×10 -4 M of Rhodamaine 6G and 3×10 -5 M of said DQOCI.
Claim 6
Dependent Claim
24 words
The invention as set forth in claim 3 wherein said mixture is a solution of Rhodamine 6G and said DQOCI in ethylene glycol solvent.
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) | 1988-05-13 | 1988-11-12 | 1989-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-13 | 1992-11-12 | 1993-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-13 | 1996-11-12 | 1997-05-14 | $7700.00 | Window Closed / Lapsed |