Optimization of Triarylamine Photorefractive Polymers for High- Speed All-optical Novelty Filters

摘要

We have demonstrated an optical novelty filter based on the two-beam coupling effect in photorefractive polymers. The photorefractive polymer composition was optimized for response time and two-beam coupling gain by changing the ionization potential and polarizability of various components. In this study, a photorefractive polymer composition was simultaneously optimized for response time and gain, and employed as a key element in a two-beam coupling novelty filter with a high contrast ratio and a limiting frequency of MHz, considerably higher than any previously reported in a two-beam coupling photorefractive novelty filter.