Abstract
Abstract Experimental studies have been conducted with a versatile two recording beams (488 nm) arrangement that permits to investigate the real-time responses (633 nm) of studied polymeric films for a wide range of interbeam angles. Using this new automated spatial frequency analyser designed at Université Laval, dye/polymer systems can be characterized for both transmission and reflection holography. Moreover many applications involving real-time holography and four-wave mixing techniques are easily performed with this special apparatus. Most of our characterization studies have considered polarization holography. Results for thin solid films made from “azo dye colored polyvinyl alcohol (PVA)” and “Yellow dichromated PVA films” will be discussed. Photoreaction mechanisms involved in these recording processes and some modern applications of our erasable or/and permanent films are presented.
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