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Proceedings Paper

Chiral materials in second-order nonlinear optics
Author(s): Martti Kauranen; Bertrand Busson; Thierry Verbiest; Andre P. Persoons
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Paper Abstract

We review second-order nonlinear optical properties of chiral materials from the viewpoint of new second-order materials. Chiral molecules are noncentrosymmetric and therefore have a nonvanishing electric-dipole-allowed second-order response. The response is nonvanishing even in macroscopic samples with no polar order including isotropic solutions. Magnetic-dipole interactions of chiral materials can be strong. Their contributions to the nonlinear response allow second-order processes even in centrosymmetric materials. The magnetic contributions to the second-order response of thin films of chiral polyisocyanides and polythiophenes are comparable to the electric contributions. The chiral part of the electric-dipole-allowed nonlinearity dominates the second-order response of thin films of a chiral helicenebisquinone. Quasi-phase-matched second-harmonic generation was demonstrated in alternating stacks of the two enantiomers of the helicenebisquinone.

Paper Details

Date Published: 7 December 2001
PDF: 10 pages
Proc. SPIE 4461, Linear and Nonlinear Optics of Organic Materials, (7 December 2001); doi: 10.1117/12.449826
Show Author Affiliations
Martti Kauranen, Tampere Univ. of Technology (Finland)
Bertrand Busson, Univ. Paris-Sud (France)
Thierry Verbiest, Katholieke Univ. Leuven (Belgium)
Andre P. Persoons, Katholieke Univ. Leuven (Belgium)

Published in SPIE Proceedings Vol. 4461:
Linear and Nonlinear Optics of Organic Materials
Manfred Eich; Mark G. Kuzyk, Editor(s)

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