Patent US3309526A successfully refreshed from Google Patents.
US3309526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical parametric amplifier and oscillator with isotropic crystal, phase matching and lower frequency pump
Assignee: AT&T Inc
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Filing: 1965-12-14
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Granted: 1967-03-14
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Expires: 1985-12-14
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Giordmaine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:22
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/35; G02F1/39; G02F1/392
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
AN OPTICAL PARAMETRIC DEVICE COMPRISING AN ISOTROPIC CRYSTAL, MEANS FOR PRODUCING WITHIN SAID CRYSTAL A PHASE MATCHED CONDITION AMONG WAVES OF FREQUENCIES F2 AND F3 PROPAGATING IN SAID CRYSTAL AND A TRAVELING WAVE OF INDEX OF REFRACTION CHANGE IN SAID CRYSTAL HAVING A FREQUENCY 2F1 COMPRISING MEANS FOR DIRECTING ENERGY AT A FREQUENCY F1 INTO SAID CRYSTAL AT A POWER LEVEL LESS THAN
Claim 2
Dependent Claim
63 words
AN OPTICAL PARAMETRIC DEVICE COMPRISING AN ISOTROPIC CRYSTAL, MEANS FOR PRODUCING WITHIN SAID CRYSTAL A PHASE MATCHED CONDITION AMONG WAVES OF FREQUENCIES F2 AND F3 PROPAGATING IN SAID CRYSTAL AND A TRAVELING WAVE OF INDEX OF REFRACTION CHANGE IN SAID CRYSTAL HAVING A FREQUENCY 2F1 COMPRISING MEANS FOR DIRECTING ENERGY AT A FREQUENCY F1 INTO SAID CRYSTAL AT A POWER LEVEL LESS THAN
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |