US3247467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffraction limited optical maser
Assignee: AT&T Inc
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Filing: 1962-09-28
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Granted: 1966-04-19
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Expires: 1982-09-28
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Geusic
- 👤 John G Skinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:08
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/06; H01S3/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
AN OPTICAL MASER FOR PRODUCING A SUBSTANTIALLY DIFFRACTION LIMITED OUTPUT BEAM, COMPRISING MEANS FORMING AN OPTICAL CAVITY RESONATOR, A NEGATIVE TEMPERATURE MEDIUM DISPOSED WITHIN SAID RESONATOR, MEANS FOR PUMPING SAID MEDIUM TO PRODUCE COHERENT LIGHT WAVE ENERGY BY STIMULATED EMISSION THEREFROM, SAID CAVITY RESONATOR BEING ADAPTED TO FOCUS AT AN INTERIOR POINT LIGHT RAYS EMITTED FROM SAID MEDIUM, APERTURE MEANS POSITIONED AT SAID INTERIOR FOCAL POINT OF SAID LIGHT RAYS, SAID APERTURE MEANS BEING SO DIMENSIONED TO PASS ONLY THE BRIGHT CENTER SPOT OF THE FRAUNHOFER DIFFRACTION PATTERN AT SAID FOCAL POINT WHEREBY ONLY LIGHT RAYS ENCOMPASSED IN SAID SPOT ARE CAUSED TO RESONATE IN SAID CAVITY, AND MEANS FOR ABSTRACTING COHERENT WAVE ENERGY FROM SAID CAVITY.
Claim 2
Dependent Claim
117 words
AN OPTICAL MASER FOR PRODUCING A SUBSTANTIALLY DIFFRACTION LIMITED OUTPUT BEAM, COMPRISING MEANS FORMING AN OPTICAL CAVITY RESONATOR, A NEGATIVE TEMPERATURE MEDIUM DISPOSED WITHIN SAID RESONATOR, MEANS FOR PUMPING SAID MEDIUM TO PRODUCE COHERENT LIGHT WAVE ENERGY BY STIMULATED EMISSION THEREFROM, SAID CAVITY RESONATOR BEING ADAPTED TO FOCUS AT AN INTERIOR POINT LIGHT RAYS EMITTED FROM SAID MEDIUM, APERTURE MEANS POSITIONED AT SAID INTERIOR FOCAL POINT OF SAID LIGHT RAYS, SAID APERTURE MEANS BEING SO DIMENSIONED TO PASS ONLY THE BRIGHT CENTER SPOT OF THE FRAUNHOFER DIFFRACTION PATTERN AT SAID FOCAL POINT WHEREBY ONLY LIGHT RAYS ENCOMPASSED IN SAID SPOT ARE CAUSED TO RESONATE IN SAID CAVITY, AND MEANS FOR ABSTRACTING COHERENT WAVE ENERGY FROM SAID CAVITY.
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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |