Patent US3875529A successfully refreshed from Google Patents.
US3875529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatable intra-cavity polarizer for gas lasers (CO{HD 2 {B in particular)
Assignee: United States Department of the Navy
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Filing: 1972-09-14
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Granted: 1975-04-01
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Expires: 1992-09-14
Abstract
Abstract A gas laser is equipped with a polarization adaptor which may be rotated through 360*. The polarization axis may be rotated to any desired orientation by manipulating an outer control ring magnetically coupled to an inner polarizer ring.
Inventors
- 👤 Robert T Hintz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:33
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/08; H01S3/08018; H01S3/08022; H01S3/08031; H01S3/08036
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN ALASER CAVITY INCLUDING A CYLINDRICAL NON MAGNETIC TUBE SURROUNDING A PORTION OF THE INTERNAL OPTICAL AXIS AND POLARIZATION MEANS IN SAID CAVITY INDUCING A DIRECTION OF POLARIZATION IN THE LASER ENERGY THEREBY PROVIDING POLARIZED OUTPUT, THE IMPROVEMENT COMPRISING: A CYLINDRICAL NON MAGNETIC MOUNTING RING ROTATABLE WITHIN SAID TUBE AND HAVING DISCRETE MAGNETIC AREAS ON OPPOSING OUTER PERIPHERAL PORTIONS THEREOF; AND A CONTROL RING OF NON MAGNETIC MATERIAL DIMENSIONALLY SIMILAR TO SAID MOUNTING RING SURROUNDING SAID TUBE AND COMPRISING DIAMETRICALLY OPPOSED AREAS OF MAGNETIZED MATERIAL; SAD POLARIZATION MEANS BEING MOUNTED IN SAID MOUNTING RING; AND SAID CONTROL RING AND SAID MOUNTING RING BEING SO ARRANGED THAT SAID AREAS OF MAGNETIC MATERIAL ARE OPPOSITE SAID MAGNETIC AREAS SO ROTATION OF SAID CONTROL RING WILL CAUSE ROTATION OF SAID MOUNTING RING BY MAGNETIC COUPLING ACTION TO ADJUST THE DIRECTION OF POLARIZATION IN THE LASER ENERGY.
Claim 2
Dependent Claim
143 words
IN ALASER CAVITY INCLUDING A CYLINDRICAL NON MAGNETIC TUBE SURROUNDING A PORTION OF THE INTERNAL OPTICAL AXIS AND POLARIZATION MEANS IN SAID CAVITY INDUCING A DIRECTION OF POLARIZATION IN THE LASER ENERGY THEREBY PROVIDING POLARIZED OUTPUT, THE IMPROVEMENT COMPRISING: A CYLINDRICAL NON MAGNETIC MOUNTING RING ROTATABLE WITHIN SAID TUBE AND HAVING DISCRETE MAGNETIC AREAS ON OPPOSING OUTER PERIPHERAL PORTIONS THEREOF; AND A CONTROL RING OF NON MAGNETIC MATERIAL DIMENSIONALLY SIMILAR TO SAID MOUNTING RING SURROUNDING SAID TUBE AND COMPRISING DIAMETRICALLY OPPOSED AREAS OF MAGNETIZED MATERIAL; SAD POLARIZATION MEANS BEING MOUNTED IN SAID MOUNTING RING; AND SAID CONTROL RING AND SAID MOUNTING RING BEING SO ARRANGED THAT SAID AREAS OF MAGNETIC MATERIAL ARE OPPOSITE SAID MAGNETIC AREAS SO ROTATION OF SAID CONTROL RING WILL CAUSE ROTATION OF SAID MOUNTING RING BY MAGNETIC COUPLING ACTION TO ADJUST THE DIRECTION OF POLARIZATION IN THE LASER ENERGY.
References Cited (Backward Citations)
US3062100A
Cited
US3617938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |