25 September 1995 Electro-optic sensors: a precise in-situ alignment of quarter-wave plate
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Proceedings Volume 2510, Fiber Optic and Laser Sensors XIII; (1995) https://doi.org/10.1117/12.221701
Event: European Symposium on Optics for Environmental and Public Safety, 1995, Munich, Germany
For a highly accurate electro-optic sensor, the tolerance of the quarter-wave plate phase retardation should be at least (lambda) /250, and the azimuthal alignment error should be within +/- 0.5 degrees. Also the phase retardation depends on the angle of incidence, which makes the alignment more difficult. The method we present uses the extinction ratio as a measure of the quality of alignment. It enables in-situ alignment of the quarter-wave plate to the phase retardation accuracy of +/- 0.5 degrees using only the components of the electro- optic sensor. The method can easily be generalized for any application and for an automated and direct measurement of the phase retardation of a wave plate with high accuracy.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Franjo Cecelja, Franjo Cecelja, Ridwan Jung, Ridwan Jung, Bala Balachandran, Bala Balachandran, Michael Berwick, Michael Berwick, } "Electro-optic sensors: a precise in-situ alignment of quarter-wave plate", Proc. SPIE 2510, Fiber Optic and Laser Sensors XIII, (25 September 1995); doi: 10.1117/12.221701; https://doi.org/10.1117/12.221701

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