Patent US3403353A successfully refreshed from Google Patents.
US3403353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas laser having a second cathode for space charge neutralization
Assignee: AT&T Inc
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Filing: 1965-04-08
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Granted: 1968-09-24
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Expires: 1985-04-08
Abstract
No abstract record available.
Inventors
- 👤 Jr Willis E Lamb
- 👤 Ping K Tien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:35
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/09; H01S3/097
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
APPARATUS ADAPTED FOR THE STIMULATED EMISSION OF RADIATION, COMPRISING A MEMBER CONTAINING AN ACTIVE MEDIUM, MEANS ASSOCIATED WITH SAID MEMBER FOR FORMING AN OPTICAL CAVITY RESONATOR, MEANS FOR PUMPING SAID ACTIVE MEDIUM WITH A SUBSTANTIALLY MONOENERGETIC ELECTRON BEAM TO ESTABLISH A POPULATION INVERSION BETWEEN A PAIR OF OPTICALLY CONNECTED ENERGY LEVELS OF SAID ACTIVE MEDIUM, AND MEANS FOR SUPPLING POSITIVE IONS TO NEUTRALIZE AT LEAST PARTIALLY THE SPACE CHARGE WITHIN THE PORTION OF SAID MEMBER TRAVERSABLE BY SAID RADIATION, SAID SUPPLYING MEANS INCLUDING A SOURCE OF ELECTRONS HAVING ENERGIES DIFFERENT FROM SAID MONOENERGIC BEAM AND SUFFICIENT TO IONIZE SAID ACTIVE MEDIUM.
Claim 2
Dependent Claim
101 words
APPARATUS ADAPTED FOR THE STIMULATED EMISSION OF RADIATION, COMPRISING A MEMBER CONTAINING AN ACTIVE MEDIUM, MEANS ASSOCIATED WITH SAID MEMBER FOR FORMING AN OPTICAL CAVITY RESONATOR, MEANS FOR PUMPING SAID ACTIVE MEDIUM WITH A SUBSTANTIALLY MONOENERGETIC ELECTRON BEAM TO ESTABLISH A POPULATION INVERSION BETWEEN A PAIR OF OPTICALLY CONNECTED ENERGY LEVELS OF SAID ACTIVE MEDIUM, AND MEANS FOR SUPPLING POSITIVE IONS TO NEUTRALIZE AT LEAST PARTIALLY THE SPACE CHARGE WITHIN THE PORTION OF SAID MEMBER TRAVERSABLE BY SAID RADIATION, SAID SUPPLYING MEANS INCLUDING A SOURCE OF ELECTRONS HAVING ENERGIES DIFFERENT FROM SAID MONOENERGIC BEAM AND SUFFICIENT TO IONIZE SAID ACTIVE MEDIUM.
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) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |