US3753146A
Expired / Lapsed
US
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Novel visible spectrum dye lasers
Assignee: Eastman Kodak Co
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Filing: 1971-10-18
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Granted: 1973-08-14
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Expires: 1991-10-18
Abstract
Abstract A lasing medium is disclosed containing certain pyrylium and benzopyrylium organic dyes which are capable of laser emission in the 500-600 nanometer region.
Inventors
- 👤 G Reynolds
- 👤 S Tuccio
- 👤 O Peterson
- 👤 D Specht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:14
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/20; H01S3/213
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
56 words
A dye laser comprising a laser dye solution and a pumping energy source operably coupled therewith and capable of producing stimulated emission of the dye solution, said dye solution comprising a lasing concentration, in a non-interfering solvent, of a dye selected from the group consisting of pyrylium and benzopyrylium dyes having respectively the following general formulas:
Claim 2
Dependent Claim
14 words
A dye laser of claim 2 wherein the laser dye solution comprises 4-(4-amyloxyphenyl)-2,6-bis(4-ethoxyphenyl)-pyrylium perchlorate.
Claim 3
Dependent Claim
14 words
A dye laser of claim 2 wherein the laser dye solution comprises 12,13-dihydro-10-methoxy-dibenzo(a,h)xanthylium perchlorate.
Claim 4
Dependent Claim
14 words
A dye laser of claim 2 wherein the laser dye solution comprises 10-methoxy-12H-indeno(3,2-b)naphtho(1,2-e)-pyrylium perchlorate.
Claim 5
Dependent Claim
14 words
A dye laser of claim 2 wherein the laser dye solution comprises 1,2-dihydro-4-methoxybenzo(C)xanthylium perchlorate.
Claim 6
Dependent Claim
14 words
A dye laser of claim 2 wherein the laser dye solution comprises 2-(4-methoxyphenyl)naphtho(2,1-b)pyrylium perchlorate.
Claim 7
Dependent Claim
14 words
A dye laser of claim 2 wherein the laser dye solution comprises benzocyclohept(2,1-e)naphtho(2,1-b)pyrylium perchlorate.
Claim 8
Dependent Claim
14 words
A dye laser of claim 2 wherein the laser dye solution comprises 12H-indeno(3,2-b)naphtho(1,2-e)pyrylium perchlorate.
Claim 9
Dependent Claim
14 words
A dye laser of claim 2 wherein the laser dye solution comprises 12,13-dihydrodibenzo(a,h)xanthylium perchlorate.
Claim 10
Dependent Claim
14 words
A dye laser of claim 2 wherein the laser dye solution comprises 8-methoxy-10H-indeno(2,3-e)benzo(b)pyrylium perchlorate.
Claim 11
Independent Claim
62 words
A method of producing coherent laser emission in the operation of a dye laser in the wavelengths of from about 500 nm to about 600 nm comprising the step of pumping a dye solution containing between 10 2 to 10 4 molar concentration of a dye in a noninterferring solvent, said dye selected from pyrylium and benzopyrylium dyes having the general formula
Claim 12
Independent Claim
60 words
A method of producing coherent laser emission in the operation of a dye laser in the wavelengths of from about 500 nm. to about 600 nm. comprising the step of pumping a dye solution containing between 10 2 to 10 4 molar concentration of a dye in a non-interfering solvent, said dye selected from benzopyrylium dyes having the general formula:
References Cited (Backward Citations)
GB1082359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |