2006/10/05 by Marco Angiuli, Francesco Ciardelli, A. Colligiani +4 · 1 citation
Physics and Astronomy · Materials Science · Engineering · #Photorefractive and Nonlinear Optics #Nonlinear Optical Materials Research #Photonic and Optical Devices
paper · doi:10.1364/ao.45.007928
openalex publication_date 2006/10/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
The asymmetric two-beam coupling technique has been employed to measure the photorefractivity of thin films of polymer blends containing 2,5-dimethyl-4-(p-nitrophenylazo)anisole as the nonlinear optical component. Poly-(1-vinylindole) and poly-(2,3-dimethyl-1-vinylindole) were the photoconductive polymer counterparts. The values of the photorefractivity are reported. It appears that they are comparable with those of similar blends based on the well-known poly-(9-vinylcarbazole) (PVK), here considered as a reference standard. Careful differential scanning calorimetry analyses have been accomplished on the different blends taken into account to rationalize the significantly longer shelf lifetime of the indolyl-based films with respect to the PVK-based blends.