Polarization storage by nonlinear orientational hole burning in azo dye-containing polymer films

Abstract

We present experimental evidence of polarization storage by nonlinear orientational hole burning in films of poly(methylmethacrylate) containing disperse red one (DR1). The data are written by polarized nonlinear excitation of DR1 by a tightly focused Ti: Sapphire laser and read by polarized confocal laser scanning microscopy in the reflection mode. The bits that are imaged with a light polarization which is parallel to the excitation laser polarization reflect light ∼2.5 times more efficiently than those which are imaged with a light polarization which is perpendicular to it. This finding is consistent with orientational hole burning of chromophores by two-photon excitation.

Investigation of Azo Polymers Local Mobility by Oscillatory Spectra of Chromophores

“…В настоящее время найдено много различных применений для материалов с моле-кулами такого вида. В частности, их используют в устройствах оптической памяти для записи и хранения информации [1], для преобразова-ния частоты света [2], в качестве оптических переключателей [3].…”

“…Nowadays, many different applications for materials with the specified molecules are found, including their use in the devices of optical memory for recording and storage of information [1], for light frequency conversion [2], as optical switches [3].…”

Forward and Backward Detectable Gray-Scale Data Storage System in Polymeric Material

“…Many efforts were put in polymeric material to use them as a fast data recording system [1,2]. To cite some examples, holographic recording have been successfully used to encode images in large volumes of poly (methyl methacrylate) (PMMA) [3,4].…”

Novel Poly(esterimide)s Containing a Push-Pull Type Azobenzene Moiety-Synthesis, Characterization and Optical Properties

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