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Proceedings Paper

Highly efficient photorefractive polymers doped with cyano nonlinear chromophores
Author(s): V. M. Herrera; J. L. Maldonado; M. Rodríguez; G. Ramos-Ortíz; M. A. Meneses-Nava; O. Barbosa-García; R. Santillán; N. Farfán; P. Lacroix
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Paper Abstract

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.

Paper Details

Date Published: 2 November 2011
PDF: 10 pages
Proc. SPIE 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World, 80115Q (2 November 2011); doi: 10.1117/12.903475
Show Author Affiliations
V. M. Herrera, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
J. L. Maldonado, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
M. Rodríguez, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
G. Ramos-Ortíz, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
M. A. Meneses-Nava, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
O. Barbosa-García, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
R. Santillán, Ctr. de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (Mexico)
N. Farfán, Univ. Nacional Autónoma de México (Mexico)
P. Lacroix, Lab. de Chimie de Coordination, CNRS (France)


Published in SPIE Proceedings Vol. 8011:
22nd Congress of the International Commission for Optics: Light for the Development of the World
Ramón Rodríguez-Vera; Ramón Rodríguez-Vera; Ramón Rodríguez-Vera; Rufino Díaz-Uribe; Rufino Díaz-Uribe; Rufino Díaz-Uribe, Editor(s)

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