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Observation of vortices and field correlations in the near-field speckle of a three-dimensional photonic crystal

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Abstract

We present a phase-sensitive near-field study of speckle fields from photonic crystals in the presence of disorder. We observe phase singularities (vortices) and analyze their statistical properties and screening effects. The experimental results show a clear polarization dependence, not only in their morphological parameters but also in their spatial distribution.

© 2010 Optical Society of America

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