Talbot and Lau phenomena implementation via a photorefractive converter
Tebaldi, Myrian Cristina
Ángel Toro, Luciano
Bolognini, Néstor Alberto
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We propose a novel implementation of the Lau and Talbot effects. It employs a grating registered as modulation of birefringence in a Bi12SiO20 crystal. The systems proposed allow to control the visibility and in particular to reverse the contrast of the self images and Lau fringes by rotating an analyzer. A theoretical approach is outlined and the predicted behavior is confirmed by results obtained under different experimental conditions. We have taken advantage of the arrangements to demonstrate some applications.