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Effect of beam divergence from the optic axis in an electro-optic experiment to measure an induced Jones
M Izdebski1, W Kucharczyk, R E Raab
1Institute of Physics, Technical University of Lódź, Poland.
Abstract:
Certain optical properties can be described in terms of two linear birefringences existing in separate Jones platelets of a medium. One of these, known as Jones birefringence, although occurring naturally in some crystals is too small to be measurable. However, the two birefringences can be induced by an electric field in 4 and 6 crystals for propagation along the optic axis. For an even slightly divergent light beam, natural birefringence may affect accuracy of measurement. Calculations show that in an experiment with a static field the error depends critically on beam divergence, whereas with a modulated field this is not so.
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