Faithful reconstruction in orthogonal elliptical polarization holography read by different polarized waves.

Abstract

A potential technology applied in optical storage, the polarization holography has attracted much attention. In polarization holography, not only the amplitude and phase but also the polarization state is applied to record the information. What is meant by faithful reconstruction is that the reconstructed wave is identical to the signal wave. In the previously reported experiments about faithful reconstruction in orthogonal polarization holography, all the reading waves are identical to the reference waves of recording stage. It may result in a misunderstanding that the reading wave being identical to the reference wave of recording stage is the prerequisite for faithful reconstruction. We designed the experiments to observe the faithful reconstruction read by different polarized waves, where two orthogonal elliptically polarized waves are applied in the recording stage and phenanthrenequinone-doped poly methyl methacrylate (PQ/PMMA) is used as the recording material. By controlling the exposure time of recording material, the faithful reconstruction may be observed when the reading wave is the linearly polarized wave and the elliptically polarized wave, where neither reading wave is the same as the reference wave. The result may be of help for us to understand the reconstructed characteristics of orthogonal polarization holography.