US3914018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yttrium orthovanadate optical polarizer
Assignee: Union Carbide Corp
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Filing: 1973-11-20
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Granted: 1975-10-21
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Expires: 1993-11-20
Abstract
Abstract An optical polarizer containing yttrium orthovanadate as a birefringent material. Such polarizers are particularly useful in polarizing the output of laser devices.
Inventors
- 👤 Larry G Deshazer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:36
CPC Classifications
G; G02; G02B; G02B1/00; G02B1/08; G02B27/00; G02B27/28; G02B27/283; H; H01; H01S; H01S3/00; H01S3/005
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
21 words
AN OPTICAL POLARIZER HAVING THE GLAN-FOCAULT, ROCHON OR WOLLASTON CONFIGURATION AND CONSISTING ESSENTIALLY OF UNDOPED YTTIRUM ORTHOVANADATE AS A BIREFRINGENT MATERIAL.
Claim 2
Dependent Claim
21 words
AN OPTICAL POLARIZER HAVING THE GLAN-FOCAULT, ROCHON OR WOLLASTON CONFIGURATION AND CONSISTING ESSENTIALLY OF UNDOPED YTTIRUM ORTHOVANADATE AS A BIREFRINGENT MATERIAL.
Claim 3
Dependent Claim
11 words
A polarizer in accordance with claim 1 having the Glan-Foucault configuration.
Claim 4
Dependent Claim
11 words
A polarizer in accordance with claim 1 having the Rochon configuration.
Claim 5
Dependent Claim
11 words
A polarizer in accordance with claim 1 having the Wollaston configuration.
Claim 6
Dependent Claim
36 words
APPARATUS COMPRISING IN COMBINATION (A) A LASER AND (B) A POLARIZER CONSISTING ESSENTIALLY OF UNDOPED YTTRIUM ORTHOVANADATE DISPOSED IN THE PATH OF THE LASER OUTPUT BEAM FOR FIG-01 INCREASING THE DEGREE OF SAID LASER OUTPUT BEAM.
Claim 7
Dependent Claim
36 words
APPARATUS COMPRISING IN COMBINATION (A) A LASER AND (B) A POLARIZER CONSISTING ESSENTIALLY OF UNDOPED YTTRIUM ORTHOVANADATE DISPOSED IN THE PATH OF THE LASER OUTPUT BEAM FOR FIG-01 INCREASING THE DEGREE OF SAID LASER OUTPUT BEAM.
Claim 8
Dependent Claim
24 words
Apparatus in accordance with claim 5 wherein said laser has output pulses having a power density of at least 900 watts per square centimeter.
References Cited (Backward Citations)
US3700308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |