Patent US3931591A successfully refreshed from Google Patents.
US3931591A
Expired / Lapsed
US
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Q-switching device for glass lasers
Assignee: PPG Industries Inc
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Filing: 1974-01-17
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Granted: 1976-01-06
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Expires: 1994-01-17
Abstract
Abstract An improved Q-switched neodymium laser in which uranium as UO 2 .sup. +2 and a uranium oxidizing agent such as cerium in a host body such as glass serve as either an external or an internal Q-switching device for the laser.
Inventors
- 👤 Charles B. Greenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:49
CPC Classifications
C; C03; C03C; C03C4/00; C03C4/0071; H; H01; H01S; H01S3/00; H01S3/10; H01S3/11; H01S3/1123; H01S3/113
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A self Q-switching laser device including means for pumping Nd.sup. +3 ions, comprising a glass article consisting essentially of: a. a conventional host glass selected from the group consisting of: soda-lime-alumina-silica glass, soda-lime-silica glass, high silica borosilicate glass, germanate glass, flint glass, and lead silicate glass; b. from 0.01 to 30 percent by weight Nd 2 O 3 lasing element; c. from 0.01 to 15 percent by weight uranium expressed as UO 2 .sup. +2 , at least 91 percent of the uranium content being in the UO 2 .sup. +2 valence form, and serving as the Q-switcher; d. from 0.01 to 20 percent by weight CeO 2 to maintain at least 91 percent of the uranium ions in the UO 2 .sup. +2 valence state.
Claim 2
Dependent Claim
126 words
A self Q-switching laser device including means for pumping Nd.sup. +3 ions, comprising a glass article consisting essentially of: a. a conventional host glass selected from the group consisting of: soda-lime-alumina-silica glass, soda-lime-silica glass, high silica borosilicate glass, germanate glass, flint glass, and lead silicate glass; b. from 0.01 to 30 percent by weight Nd 2 O 3 lasing element; c. from 0.01 to 15 percent by weight uranium expressed as UO 2 .sup. +2 , at least 91 percent of the uranium content being in the UO 2 .sup. +2 valence form, and serving as the Q-switcher; d. from 0.01 to 20 percent by weight CeO 2 to maintain at least 91 percent of the uranium ions in the UO 2 .sup. +2 valence state.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |