Proceedings/Recueil Des Communications Année : 2011

Highly efficient photorefractive polymers doped with cyano nonlinear chromophores

Résumé

In this work we report new highly efficient organic photorefractive polymers based on aryl-cyano non-linear chromophores [(4-(diethylamino)-2-hydroxybenzylideneamino]benzonitrile (CN-C-OH) and [4-(diethylamino) benzylideneamino]benzonitrile (CN-S-OH). The PR polymer blends are composed by the photoconductor poly (9-vinylcarbazole) and plasticizer 9-ethylcarbazole PVK:ECZ matrix, as well as the sensitizer fullerene C60. Holographic experiments in a tilted four wave mixing (FWM) and two beam coupling (TBC) geometry were carried out by using a 10 mW He-Ne laser (633 nm). The experiments were performed at room temperature to measure the electric field steady-state diffraction efficiency dependence of the PR composites. High diffraction efficiency as high as 90 % was observed for polymers based on CN-C-OH at 25 wt. % doping level and an external applied electric field around 56 V/μm. The μβ product was also measured by EFISH technique for compounds CN-C-OH and CN-S-OH, results showed that CN-C-OH present a value 3.5 times higher than CN-S- OH, which is supported by a theoretical prediction. Demonstration of fast reversible holographic imaging (~0.5 s) by using these highly efficient organic photorefractive polymers based on CN-C-OH and CN-S-OH is presented.

Fichier non déposé

Dates et versions

hal-04666221 , version 1 (01-08-2024)

Identifiants

Citer

V. Herrera, J. Maldonado, M. Rodríguez, G. Ramos-Ortíz, M. Meneses-Nava, et al.. Highly efficient photorefractive polymers doped with cyano nonlinear chromophores. International Commission for Optics (ICO 22), 8011, SPIE Digital Library, pp.80115Q, 2011, ⟨10.1117/12.903475⟩. ⟨hal-04666221⟩
44 Consultations
0 Téléchargements

Altmetric

Partager

  • More