Electro-optical device for conversion of tangential and radial polarization components to rectangular coordinate components
Abstract
Abstract AN ELECTRO-OPTIC CRYSTAL SUCH AS LITHIUM NIOBATE IS FORMED INTO A HALF WAVEPLATE TO CONVERT TANGENTIAL AND RADIAL POLARIZATION COMPONENTS IN A LASER BEAM TO RECTANGULAR CO-ORDINATE COMPONENTS. TO ACHIEVE THIS POLARIZATION CONVERSION A TRANSVERSE ELECTRIC FIELD IS APPLIED TO THE CRYSTAL IN AN UNIFORM STRENGTH PATTERN SUCH THAT THE DIRECTION OF THE FIELD VARIES WITH THE ANGULAR POSITION IN THE CRYSTAL CHANGING AT THE SAM RATE AS THE ANGULAR RATE OF CHANGE OF POSITION IN THE CRYSTAL. SUCH POLARIZATION CONVERSION DEVICES ARE COMBINED WITH A LASER AND IN A LASER CAVITY TO LIMIT LASER OSCILLATIONS IN THE LASER CAVITY TO BE EITHER ONLY TANGENTIALLY POLARIZED OR ONLY RADIALLY POLARIZED.
Inventors
- 👤 Joseph P Segre
Bibliographic Details
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USPTO Annuity & Maintenance Windows
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| 3.5 Years (Year 4) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |