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Photo-induced anisotropy and post-development phase modulation in dyed polymeric matrices

A holographic study of films prepared with polyvinyl alcohol (PVA) with different molecular weights and sensitized by introducing a dye of the triphenylmethane group is reported. Interference patterns obtained from the superposition of parallel and orthogonal polarized beams are storage in the dyed palates. Recording dynamics of the resultant electric field distributions and dependence of the diffraction efficiency on the PVA molecular weight are determined. Additionally, it is demonstrated that reconstruction of the object polarization is dependent on the frequency of the polarization grating. Finally, the recording area of the material is analyzed to detect a relief formation.