The influence of the glass-transition temperature <i>T</i><sub><i>g</i></sub> and the electro-optical chromophore content on the grating buildup dynamics in photorefractive polymer composites is investigated. The response times were found to be strongly dependent on both parameters. In the low-<i>T</i><sub><i>g</i></sub> regime, composites of different chromophore content respond similarly quickly (200–500 ms), whereas significant differences occur for <i>T</i><sub><i>g</i></sub> above the measurement (room) temperature. The composites with the highest chromophore content give the best steady-state performance; however, their response is much slower than that for those containing less chromophore.
© 1998 Optical Society of America
Reinhard Bittner, Christoph Bräuchle, and Klaus Meerholz, "Influence of the Glass-Transition Temperature and the Chromophore Content on the Grating Buildup Dynamics of poly(N-vinylcarbazole)-based Photorefractive Polymers," Appl. Opt. 37, 2843-2851 (1998)