US3316501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical maser apparatus
Assignee: AT&T Inc
•
Filing: 1963-02-01
•
Granted: 1967-04-25
•
Expires: 1983-02-01
Abstract
No abstract record available.
Inventors
- 👤 Robert J Collins
- 👤 Joseph A Giordmaine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:35
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/10; H01S3/101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
AN OPTICAL MASER DEVICE COMPRISING MEANS FORMING AN OPTICAL CAVITY RESONATOR HAVING A PLURALITY OF NONPARALLEL INTERIOR REFLECTING SURFACES, SAID RESONATOR BEING RESONANT FOR A PLURALITY OF OPTICAL MODES, LIGHT RAYS IN EACH OF SAID MODES BEING INCIDENT AT A DISCRETE ANGLE AND POSITION ON SAID REFLECTIVE SURFACES FOR FORMING DISCRETE FAR FIELD PATTERNS CHARACTERISTIC OF THE PARTICULAR OPTICAL MODES EXCITED AND SUPPORTED IN SAID CAVITY RESONATOR, MEANS FOR ABSTRACTING LIGHT WAVE ENERGY FROM SAID RESONATOR, AN ACTIVE MEDIUM WITHIN SAID RESONATOR, MEANS FOR PUMPING SAID MEDIUM TO PRODUCE A POPULATION INVERSION AMONG THE ENERGY LEVELS THEREOF WHEREBY OSCILLATION OCCURS IN SAID OPTICAL MODES, SAID MODES BEING FURTHER CHARACTERIZED BY HAVING DIFFERENT THRESHOLDS OF OSCILLATION, AND MEANS FOR SELECTIVELY PRODUCING DIFFERENT DISCRETE FAR FIELD PATTERNS IN ACCORDANCE WITH APPLIED SIGNALS COMPRISING MEANS RESPONSIVE TO THE APPLIED SIGNALS FOR EXCEEDING THE OSCILLATION THRESHOLD OF SELECTED ONES OF SAID MODES TO PRODUCE THE DISCRETE FAR FIELD PATTERNS.
Claim 2
Dependent Claim
155 words
AN OPTICAL MASER DEVICE COMPRISING MEANS FORMING AN OPTICAL CAVITY RESONATOR HAVING A PLURALITY OF NONPARALLEL INTERIOR REFLECTING SURFACES, SAID RESONATOR BEING RESONANT FOR A PLURALITY OF OPTICAL MODES, LIGHT RAYS IN EACH OF SAID MODES BEING INCIDENT AT A DISCRETE ANGLE AND POSITION ON SAID REFLECTIVE SURFACES FOR FORMING DISCRETE FAR FIELD PATTERNS CHARACTERISTIC OF THE PARTICULAR OPTICAL MODES EXCITED AND SUPPORTED IN SAID CAVITY RESONATOR, MEANS FOR ABSTRACTING LIGHT WAVE ENERGY FROM SAID RESONATOR, AN ACTIVE MEDIUM WITHIN SAID RESONATOR, MEANS FOR PUMPING SAID MEDIUM TO PRODUCE A POPULATION INVERSION AMONG THE ENERGY LEVELS THEREOF WHEREBY OSCILLATION OCCURS IN SAID OPTICAL MODES, SAID MODES BEING FURTHER CHARACTERIZED BY HAVING DIFFERENT THRESHOLDS OF OSCILLATION, AND MEANS FOR SELECTIVELY PRODUCING DIFFERENT DISCRETE FAR FIELD PATTERNS IN ACCORDANCE WITH APPLIED SIGNALS COMPRISING MEANS RESPONSIVE TO THE APPLIED SIGNALS FOR EXCEEDING THE OSCILLATION THRESHOLD OF SELECTED ONES OF SAID MODES TO PRODUCE THE DISCRETE FAR FIELD PATTERNS.
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) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |