Patent US2122818A successfully refreshed from Google Patents.
Patent US3445787A successfully refreshed from Google Patents.
US3445787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tunable,frequency stabilized laser
Assignee: Raytheon Co
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Filing: 1966-08-01
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Granted: 1969-05-20
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Expires: 1986-08-01
Abstract
No abstract record available.
Inventors
- 👤 David F Hotz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:04
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/10; H01S3/13; H01S3/139; H01S3/1396
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A TUNABLE, FREQUENCY STABILIZER LASER OSCILLATOR COMPRISING: A TUNABLE SINGLE MODE LASER OSCILLATOR CAPABLE OF PRODUCING AT LEAST ONE OUTPUT LASER BEAM OF OPTICAL FREQUENCY ENERGY; A PHASE COMPARISON INTERFEROMETER WHEREIN SAID OUTPUT LAER BEAM IS SPLIT INTO TWO COMPONENTS RROPAGATING ALONG DIFFERENT PATHS BEFORE BEING RECOMBINED AS AN OUTPUT SIGNAL BEAM, ONLY ONE OF SAID PATHS BEING CAPABLE OF AMPLIFYING THAT COMPONENT OF SAID LASER BEAM PROPAGATING THERETHROUGH, THE OTHER OF SAID PATHS INCLUDING AN OPTICAL PHASE MODULATION ELEMENT THROUGH WHICH THE OUTER COMPONENT OF SAID BEAM PROPAGATES; MEANS FOR DETECTING THE INTENSITY OF SAID OUTPUT SIGNAL BEAM AND FOR PROVIDING A DC OUTPUTS SIGNAL DIRECTLY RELATED TO THE INTENSITY OF SAID OUTPUT SIGNAL BEAM; AND MEANS COUPLED TO SAID LASER OSCILLATOR AND SAID DC OUTPUT SIGNAL FOR TUNING THE FREQUENCY OF SAID OUTPUT LASER BEAM PRODUCED BY SAID LASER OSCILLATOR IN ACCORDANCE WITH THE AMPLITUDE AND POLARITY OF SAID DC OUTPUT SIGNAL.
Claim 2
Dependent Claim
154 words
A TUNABLE, FREQUENCY STABILIZER LASER OSCILLATOR COMPRISING: A TUNABLE SINGLE MODE LASER OSCILLATOR CAPABLE OF PRODUCING AT LEAST ONE OUTPUT LASER BEAM OF OPTICAL FREQUENCY ENERGY; A PHASE COMPARISON INTERFEROMETER WHEREIN SAID OUTPUT LAER BEAM IS SPLIT INTO TWO COMPONENTS RROPAGATING ALONG DIFFERENT PATHS BEFORE BEING RECOMBINED AS AN OUTPUT SIGNAL BEAM, ONLY ONE OF SAID PATHS BEING CAPABLE OF AMPLIFYING THAT COMPONENT OF SAID LASER BEAM PROPAGATING THERETHROUGH, THE OTHER OF SAID PATHS INCLUDING AN OPTICAL PHASE MODULATION ELEMENT THROUGH WHICH THE OUTER COMPONENT OF SAID BEAM PROPAGATES; MEANS FOR DETECTING THE INTENSITY OF SAID OUTPUT SIGNAL BEAM AND FOR PROVIDING A DC OUTPUTS SIGNAL DIRECTLY RELATED TO THE INTENSITY OF SAID OUTPUT SIGNAL BEAM; AND MEANS COUPLED TO SAID LASER OSCILLATOR AND SAID DC OUTPUT SIGNAL FOR TUNING THE FREQUENCY OF SAID OUTPUT LASER BEAM PRODUCED BY SAID LASER OSCILLATOR IN ACCORDANCE WITH THE AMPLITUDE AND POLARITY OF SAID DC OUTPUT SIGNAL.
References Cited (Backward Citations)
US3361990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |