Second-Order Nonlinear Optical Properties of Highly Symmetric Chiral Thin Films

We demonstrate second-harmonic generation in highly symmetric thin films of chiral molecules. The films were prepared by spin-coating, and no external force (such as electric field poling) was used to induce noncentrosymmetry. The films have a nonpolar D n symmetry with second-order susceptibility v...

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Bibliographic Details
Published in:Langmuir 2001-08, Vol.17 (16), p.4685-4687
Main Authors: Verbiest, Thierry, Elshocht, Sven Van, Persoons, André, Nuckolls, Colin, Phillips, Karen E, Katz, Thomas J
Format: Article
Language:English
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Summary:We demonstrate second-harmonic generation in highly symmetric thin films of chiral molecules. The films were prepared by spin-coating, and no external force (such as electric field poling) was used to induce noncentrosymmetry. The films have a nonpolar D n symmetry with second-order susceptibility values of 2−9 pm/V. Furthermore, the samples are stable at elevated temperatures.
ISSN:0743-7463
1520-5827
DOI:10.1021/la010262u