Thionine dye dissolved in polyvinylalcohol matrix is a well-known photoreducible system that shows photochromism. Experiments on a real time hologram recording process performed by this system are presented here. During the reading process, a grating reinforcement was observed, and this phenomenon is qualitatively discussed.
© 1990 Optical Society of America
Serge Caron, Jean J. A. Couture, and Roger A. Lessard, "Real time hologram reinforcement demonstrated by thionine/PVA photoreducible thin layers," Appl. Opt. 29, 599-603 (1990)