Improved long-term stability of high-performance photorefractive polymer devices

We report on novel high-performance photorefractive polymer composites based on poly(Nvinylcarbazole) using mixtures of two isomeric electro-optically active chromophores. We demonstrate that the shelf life time of devices using the eutectic mixture is considerably improvedcompared with devices containing just one isomer. Keywords: photorefractive polymers, four-wave mixing, materials stability, aging