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Poled sol-gel materials with heterocycle push-pull chromophores that confer enhanced second-order optical nonlinearity

Brusatin, Giovanna and Abbotto, Alessandro and Beverina, Luca and Pagani, Giorgio A. and Casalboni, Mauro and Sarcinelli, Felice and Innocenzi, Plinio (2004) Poled sol-gel materials with heterocycle push-pull chromophores that confer enhanced second-order optical nonlinearity. Advanced Functional Materials, Vol. 14 (12), p. 1160-1166. eISSN 1616-3028. Article.

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DOI: 10.1002/adfm.200305139

Abstract

Hybrid organic-inorganic materials doped with zwitterionic push-pull chromophores with high hyperpolarizability have been synthesized by a sol-gel procedure. A large chromophore concentration was reached by using N-(hydroxyethyl)carbazole as a physical spacer (preventing the dye aggregation). Spin-coated doped films were electrically poled and second harmonic generation measurements performed in situ. During the thermally assisted poling under a N2 atmosphere, only the carbazole molecules degraded. Second-harmonic generation measurements gave an estimation of the nonlinear coefficient, r33, of 38 pm V-1 at 1064 nm.

Item Type:Article
ID Code:1294
Status:Published
Refereed:Yes
Uncontrolled Keywords:Electro optical materials, nonlinear optical materials, sol-gel materials
Subjects:Area 09 - Ingegneria industriale e dell'informazione > ING-IND/22 Scienza e tecnologia dei materiali
Divisions:001 Università di Sassari > 01 Dipartimenti > Architettura e pianificazione
Publisher:Wiley-VCH
eISSN:1616-3028
Deposited On:18 Aug 2009 10:04

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