Patent US3270291A successfully refreshed from Google Patents.
US3270291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser control device using a saturable absorber
Assignee: RCA Corp
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Filing: 1962-10-22
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Granted: 1966-08-30
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Expires: 1982-10-22
Abstract
No abstract record available.
Inventors
- 👤 Walter F Kosonocky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:27
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/16; G; G02; G02F; G02F1/00; G02F1/35; G02F1/3523; H01S3/10; H01S3/11; H01S3/1123; H01S3/113
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
IN COMBINATION (A) A CAVITY RESONANT AT A GIVEN FREQUENCY, (B) A MATERIAL POSITIONED WITHIN SAID CAVITY FOR ABSORBING ENERGY AT SAID FREQUENCY, (C) A MATERIAL POSITIONED WITHIN SAID CAVITY FOR EMITTING ENERGY AT SAID FREQUENCY; MEANS FOR ESTABLISHING A POPULATION INVERSION, CORRESPONDING TO SAID FREQUENCY, IN SAID SECOND MENTIONED MATERIAL FOR PRODUCING SAID EMITTED ENERGY, THE QUANTITY OF SAID SECOND MEMTIONED MATERIAL IN ITS EXCITED STATE BEING SUCH THAT THE MAXIMUM POPULATION INVERSION, CORRESPONDING TO SAID FREQUENCY, OF SAID SECOND MENTIONED MATERIAL IS GREATER THAN THE POPULATION OF THE LOWER OF THE TWO STATES INVOLVED IN ABSORPTION BY SAID FIRST MEMTIONED MATERIAL, (D) SAID MATERIALS BEING POSITIONED SUCH THAT ENERGY SUSTAINED BY SAID CAVITY PASSES THROUGH BOTH MATERIALS AND SUCH THAT SAID FIRST MENTIONED MATERIAL CAN ABSORB ENERGY EMITTED BY SAID SECOND MENTIONED MATERIAL, AND (E) THE CHARACTERISTIC OF SAID FIRST AND SECOND MEMTIONED MATERIALS BEING SUCH THAT THE STRENGTH OF INTERACTION BETWEEN PARTICLES OF SAID FIRST MENTIONED MATERIAL AND AN ELECTROMAGNETIC WAVE AT SAID FREQUENCY IS GREATER THAN THE STRENGTH OF INTERACTION BETWEEN PARTICLES OF SAID SECOND MENTIONED MATERIAL AND THE SAME WAVE.
Claim 2
Dependent Claim
185 words
IN COMBINATION (A) A CAVITY RESONANT AT A GIVEN FREQUENCY, (B) A MATERIAL POSITIONED WITHIN SAID CAVITY FOR ABSORBING ENERGY AT SAID FREQUENCY, (C) A MATERIAL POSITIONED WITHIN SAID CAVITY FOR EMITTING ENERGY AT SAID FREQUENCY; MEANS FOR ESTABLISHING A POPULATION INVERSION, CORRESPONDING TO SAID FREQUENCY, IN SAID SECOND MENTIONED MATERIAL FOR PRODUCING SAID EMITTED ENERGY, THE QUANTITY OF SAID SECOND MEMTIONED MATERIAL IN ITS EXCITED STATE BEING SUCH THAT THE MAXIMUM POPULATION INVERSION, CORRESPONDING TO SAID FREQUENCY, OF SAID SECOND MENTIONED MATERIAL IS GREATER THAN THE POPULATION OF THE LOWER OF THE TWO STATES INVOLVED IN ABSORPTION BY SAID FIRST MEMTIONED MATERIAL, (D) SAID MATERIALS BEING POSITIONED SUCH THAT ENERGY SUSTAINED BY SAID CAVITY PASSES THROUGH BOTH MATERIALS AND SUCH THAT SAID FIRST MENTIONED MATERIAL CAN ABSORB ENERGY EMITTED BY SAID SECOND MENTIONED MATERIAL, AND (E) THE CHARACTERISTIC OF SAID FIRST AND SECOND MEMTIONED MATERIALS BEING SUCH THAT THE STRENGTH OF INTERACTION BETWEEN PARTICLES OF SAID FIRST MENTIONED MATERIAL AND AN ELECTROMAGNETIC WAVE AT SAID FREQUENCY IS GREATER THAN THE STRENGTH OF INTERACTION BETWEEN PARTICLES OF SAID SECOND MENTIONED MATERIAL AND THE SAME WAVE.
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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |