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Proceedings Paper

Optimizing the second-order nonlinear optical response in some indoline-based chromophores at the molecular and macroscopic levels
Author(s): Ayele Teshome; M. Delower H. Bhuiyan; Mohamed Ashraf; Graeme J. Gainsford; Andrew J. Kay; Stijn Van Cleuvenbergen; Inge Asselberghs; Koen Clays
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Paper Abstract

The effect of extending the conjugation length, the deployment of various substituents and configurational locking of the polyene backbone on the second-order nonlinear optical (NLO) response of a series of indoline based compounds has been investigated. The compounds were examined using Hyper-Rayleigh scattering (HRS) and relative second-harmonic generation (SHG) techniques with a femtosecond operating system with a 1300 nm fundamental wavelength. All of the compounds were found to have high molecular hyperpolarizabilities with β values of up to 1230 × 10-30 esu. At the macroscopic level-for poled polymer thin films-a strong second-order NLO signal has been detected and d33 values of up to 217 pm/V are found-a response of some ten times greater than that found for the well known azo dye Disperse Red 1.

Paper Details

Date Published: 7 September 2011
PDF: 14 pages
Proc. SPIE 8113, Linear and Nonlinear Optics of Organic Materials XI, 81130G (7 September 2011); doi: 10.1117/12.892312
Show Author Affiliations
Ayele Teshome, Katholieke Univ. Leuven (Belgium)
M. Delower H. Bhuiyan, Industrial Research Ltd. (New Zealand)
Mohamed Ashraf, Industrial Research Ltd. (New Zealand)
Graeme J. Gainsford, Industrial Research Ltd. (New Zealand)
Andrew J. Kay, Industrial Research Ltd. (New Zealand)
Stijn Van Cleuvenbergen, Katholieke Univ. Leuven (Belgium)
Inge Asselberghs, Katholieke Univ. Leuven (Belgium)
Koen Clays, Katholieke Univ. Leuven (Belgium)

Published in SPIE Proceedings Vol. 8113:
Linear and Nonlinear Optics of Organic Materials XI
Jean-Michel Nunzi; Rachel Jakubiak; Theodore G. Goodson; Manfred Eich, Editor(s)

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