New Materials For Second Harmonic Generation: Tentative Control Of Non-Centrosymmetry In Organic Crystals

J. F. Nicoud

doi:10.1117/12.948216

21 December 1988 New Materials For Second Harmonic Generation: Tentative Control Of Non-Centrosymmetry In Organic Crystals

J. F. Nicoud

Author Affiliations +

Proceedings Volume 0971, Nonlinear Optical Properties of Organic Materials; (1988) https://doi.org/10.1117/12.948216
Event: 32nd Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1988, San Diego, CA, United States

Abstract

Organic materials which exhibit nonlinear optical properties are currently of great interest. The design of such molecular materials, having specific physical properties, needs two steps since the macroscopic effect rises from the additive contribution of each molecular unit: search of active molecules and elaboration of efficient condensed phases. New trends in the design of highly hyperpolarizable molecules are described. Then, several strategies in getting nonlinear crystals able to frequency conversions are reviewed. In the absence of accurate predicting methods of crystal packing, the aim is to control the non-centrosymmetry in the solid state: chirality, intermolecular hydrogen-bonding, vanishing ground state dipole moment, extra charge-transfer polar group proved satisfying to get some of the most efficient crystals for quadratic nonlinear optics.

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J. F. Nicoud "New Materials For Second Harmonic Generation: Tentative Control Of Non-Centrosymmetry In Organic Crystals", Proc. SPIE 0971, Nonlinear Optical Properties of Organic Materials, (21 December 1988); https://doi.org/10.1117/12.948216

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