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Reconstruction dynamics of recorded holograms in photochromic glass

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Abstract

We have investigated the dynamics of the record–erase process of holograms in photochromic glass using continuum Nd:YVO4 laser radiation (λ=532nm). A bidimensional microgrid pattern was formed and visualized in photochromic glass, and its diffraction efficiency decay versus time (during reconstruction step) gave us information (D, Δn) about the diffusion process inside the material. The recording and reconstruction processes were carried out in an off-axis setup, and the images of the reconstructed object were recorded by a CCD camera. Measurements realized on reconstructed object images using holograms recorded at a different incident power laser have shown a two-stage process involved in silver atom kinetics.

© 2011 Optical Society of America

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