US3187270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical maser mode selector
Assignee: AT&T Inc
•
Filing: 1962-08-27
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Granted: 1965-06-01
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Expires: 1982-08-27
Abstract
No abstract record available.
Inventors
- 👤 Herwig W Kogelnik
- 👤 Chandra K N Patel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:39
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/08; H01S3/081; H01S3/082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
AN OPTICAL MASER COMPRISING A PAIR OF AXIALLY SPACED REFLECTORS DEFINING FIRST AND SECOND ENDS OF A STABLE NONCONFOACAL PRIMARY OPTICAL CAVITY RESONATOR, SAID FIRST END REFLECTOR HAVING A CONCAVE SPHERICAL SHAPE AND SAID SECOND END REFLECTOR BEING PATTIALLY TRANSMISSIVE OF LIGHT WAVE ENERGY AT THE OPERATING FREQUENCY, AN AUXILIARY REFLECTOR ADJACENT SAID PRIMARY CAVITY AND AXIALLY SPACED FROM SAID SECOND END REFLECTOR, SAID AUXILIARY REFLECTOR AND SAID FIRST END REFLECTOR FORMING AN EFFECTIVE CONFOCAL CAVITY RESONATOR WITH REFLECTORS OF EQUAL RADII OF CURVATURE, A NEGATIVE TEMPERATURE MEDIUM DISPOSED WITHIN SAID PRIMARY CAVITY, MEANS FOR PUMPING SAID NEGATIVE TEMPERATURE MEDIUM, AND MEANS FOR ABSTRACTING OUTPUT ENERGY FROM SAID PRIMARY CAVITY.
Claim 2
Dependent Claim
110 words
AN OPTICAL MASER COMPRISING A PAIR OF AXIALLY SPACED REFLECTORS DEFINING FIRST AND SECOND ENDS OF A STABLE NONCONFOACAL PRIMARY OPTICAL CAVITY RESONATOR, SAID FIRST END REFLECTOR HAVING A CONCAVE SPHERICAL SHAPE AND SAID SECOND END REFLECTOR BEING PATTIALLY TRANSMISSIVE OF LIGHT WAVE ENERGY AT THE OPERATING FREQUENCY, AN AUXILIARY REFLECTOR ADJACENT SAID PRIMARY CAVITY AND AXIALLY SPACED FROM SAID SECOND END REFLECTOR, SAID AUXILIARY REFLECTOR AND SAID FIRST END REFLECTOR FORMING AN EFFECTIVE CONFOCAL CAVITY RESONATOR WITH REFLECTORS OF EQUAL RADII OF CURVATURE, A NEGATIVE TEMPERATURE MEDIUM DISPOSED WITHIN SAID PRIMARY CAVITY, MEANS FOR PUMPING SAID NEGATIVE TEMPERATURE MEDIUM, AND MEANS FOR ABSTRACTING OUTPUT ENERGY FROM SAID PRIMARY CAVITY.
References Cited (Backward Citations)
US3055257A
Cited
US3134837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |