REAL-TIME DYNAMIC POLARIZATION HOLOGRAPHIC RECORDING ON AUTO-ERASABLEAZO-DYE DOPED PMMA STORAGE MEDIA

Dynamic real-time holographic recording under linear cross-polarized w riting beams at 488 nm was performed on two different new ate-dye dope d PMMA matrices of 10+/-1 mu m thick. For comparison, the holographic recording has also been performed under unpolarized light (lambda = 48 8 nm). Maximum diffraction efficiency of 0.15%, 0.20% and 5%, correspo nding respectively to the x-, i-polarized and unpolarized writing beam s, has been achieved. Numerous complete Write/Read/Erase (WRE) cycles have also been performed without any apparent fatigue in the recording performance of the materials. In polarization holography, a slight me mory effect could be observed in both these recording materials if the time interval between two successive exposure is relatively short (2- 5 s), on attempting to place a maximum number of WRE cycles in a speci fic time period (7-8 complete WRE cycles in 50 s).