Abstract
We analyze vectorial wave mixing in a photorefractive crystal of cubic symmetry in different geometries of beam interactions—reflection, transmission, and orthogonal. It is shown that orthogonal geometry in contrast with others supports an efficient phase demodulation of a depolarized object wave in linear mode without using any polarization-filtering elements. As a result adaptive interferometers based on the orthogonal geometry can provide a higher signal-to-noise ratio due to lower noise and lower optical losses.
© 2010 Optical Society of America
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