US3657733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid state ring laser
Assignee: Bendix Corp
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Filing: 1969-08-25
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Granted: 1972-04-18
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Expires: 1989-08-25
Abstract
Abstract A solid state one-piece ring laser having a plurality of surfaces for converting broad band light to a ring laser beam. At least one surface is refractive and is arranged at a Brewster''s angle to the ring laser beam to linearly polarize the ring laser beam. Some of the surfaces may be reflective and are arranged at critical angles to the ring laser beam. With this arrangement, none of the surfaces needs to be coated with a dielectric which deteriorates with age and environment. In a preferred arrangement, as many of the surfaces as possible are refractive to provide a more coherent laser beam.
Inventors
- 👤 William A Shapiro
- 👤 Robert P Kemmerer Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:36
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/08; H01S3/081; H01S3/083; H01S3/06; H01S3/0602
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
79 words
A solid state ring laser responsive to broad band light and providing a linearly polarized laser beam, comprising: a body of lasing material having a plurality of surfaces arranged to convert the broad band light to a ring laser beam; the plurality of surfaces including four pairs of adjacent refractive surfaces for linearly polarizing the ring laser beam; and one of the surfaces being partially reflective and partially refractive to convert the ring laser beam into a laser beam.
Claim 2
Dependent Claim
79 words
A solid state ring laser responsive to broad band light and providing a linearly polarized laser beam, comprising: a body of lasing material having a plurality of surfaces arranged to convert the broad band light to a ring laser beam; the plurality of surfaces including four pairs of adjacent refractive surfaces for linearly polarizing the ring laser beam; and one of the surfaces being partially reflective and partially refractive to convert the ring laser beam into a laser beam.
Claim 3
Dependent Claim
105 words
A solid state ring laser responsive to broad band light and providing a linearly polarized laser beam comprising: a body of lasing material having a plurality of surfaces arranged to convert broad band light to a ring laser beam; the plurality of surfaces including one pair of adjacent refractive surfaces for linearly polarizing the ring laser beam and two reflective surfaces arranged at critical angles to the ring laser beam to achieve a high degree of reflectivity without the use of a dielectric coating; and one of the surfaces being partially reflective and partially refractive to convert the ring laser beam into a laser beam.
Claim 4
Dependent Claim
105 words
A solid state ring laser responsive to broad band light and providing a linearly polarized laser beam comprising: a body of lasing material having a plurality of surfaces arranged to convert broad band light to a ring laser beam; the plurality of surfaces including one pair of adjacent refractive surfaces for linearly polarizing the ring laser beam and two reflective surfaces arranged at critical angles to the ring laser beam to achieve a high degree of reflectivity without the use of a dielectric coating; and one of the surfaces being partially reflective and partially refractive to convert the ring laser beam into a laser beam.
References Cited (Backward Citations)
US3308395A
Cited
FR1388843A
Cited
GB1128162A
Cited
US3414839A
Cited
US3504300A
Cited
US3462708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |