Abstract
We demonstrate the possibility of controlling the symmetry properties of photoinduced macroscopic susceptibility in polymer films. Ellipsometric adjustment of the write beams allows one to monitor the macroscopic symmetry from a dipolar to an octupolar configuration. Experimental results are in agreement with an irreducible spherical tensor-based model jointly applied to the molecular hyperpolarizability and field tensors. We found a purely octupolar polarization-independent photoinduced second-harmonic-generation response in a Dispersed Red 1–methyl methacrylate thin film. Such a configuration, as generated by an octupolar tensor write field tensor made up of counterclockwise circularly polarized and beams, is not within the reach of the classical electric-field poling technique.
© 1997 Optical Society of America
Full Article | PDF ArticleMore Like This
S. Brasselet and J. Zyss
J. Opt. Soc. Am. B 15(1) 257-288 (1998)
Rozenn Piron, Sophie Brasselet, Dominique Josse, Joseph Zyss, Guido Viscardi, and Claudia Barolo
J. Opt. Soc. Am. B 22(6) 1276-1282 (2005)
Sébastien Bidault, Sophie Brasselet, and Joseph Zyss
Opt. Lett. 29(11) 1242-1244 (2004)