Chiral materials in second-order nonlinear optics

Martti Kauranen; Bertrand Busson; Thierry Verbiest; Andre P. Persoons

doi:10.1117/12.449826

7 December 2001 Chiral materials in second-order nonlinear optics

Martti Kauranen, Bertrand Busson, Thierry Verbiest, Andre P. Persoons

Proceedings Volume 4461, Linear and Nonlinear Optics of Organic Materials; (2001) https://doi.org/10.1117/12.449826
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

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.

Citation Download Citation

Martti Kauranen, Bertrand Busson, Thierry Verbiest, and Andre P. Persoons "Chiral materials in second-order nonlinear optics", Proc. SPIE 4461, Linear and Nonlinear Optics of Organic Materials, (7 December 2001); https://doi.org/10.1117/12.449826

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