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Proceedings Paper

Phase conjugation as a probe for noncentrosymmetry grating formation in organics
Author(s): Fabrice Charra; Jean-Michel Nunzi; Jean Messier
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Paper Abstract

We report on specific experiments of optical phase conjugation by non-degenerate six-wave mixing processes involving fifth-order nonlinear susceptibilities. Both processes are enhanced by simultaneous one- and two-photon resonances with the second-harmonic of Nd:YAG laser. We show that light induced second-order susceptibility is much more efficient in noncentrosymmetric (Diethylaminonitrostolbene) than in centrosymmetric (Polydiacetylene) molecules in solutions. We obtain a 2.5 fm/v 210 picosecond-lived phase-matched frequency-doubling susceptibi1ity. The effect is an orientational hole burning in the isotropic distribution of non-centrosymmetric molecules.

Paper Details

Date Published: 30 December 1991
PDF: 9 pages
Proc. SPIE 1516, International Workshop on Photoinduced Self-Organization Effects in Optical Fiber, (30 December 1991); doi: 10.1117/12.51157
Show Author Affiliations
Fabrice Charra, CEN Saclay (France)
Jean-Michel Nunzi, CEN Saclay (France)
Jean Messier, CEN Saclay (France)


Published in SPIE Proceedings Vol. 1516:
International Workshop on Photoinduced Self-Organization Effects in Optical Fiber

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