1 July 1995 Molecular crystals and polymers for nonlinear optics
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We present new experimental results on second-harmonic generation in highly conjugated organic molecules and molecular crystals recently developed in our group, as well as on electro-optic eftects in thin-film polymers. A large value of the molecular hyperpolarizability of a new hydrazone-type molecule crystallizing in a noncentrosymmetric point group is reported. Large nonlinear optical coefticients of up to 840 ± 200 pmN were measured in crystals of 4'-dimethylamino-N-methyl-4-stilbazolium tosylate (DAST). The new experimental results are compared with theoretical calculations of limiting values of nonlinear optical coefticients. Computer modeling of crystal structures shows good agreement with experimental results. Measurements on electro-optic polymers with high thermal stability are presented.
Christian Bosshard, Christian Bosshard, Georg Knoepfle, Georg Knoepfle, Philippe Pretre, Philippe Pretre, Stephan Follonier, Stephan Follonier, Christophe Serbutoviez, Christophe Serbutoviez, Peter Guenter, Peter Guenter, } "Molecular crystals and polymers for nonlinear optics," Optical Engineering 34(7), (1 July 1995). https://doi.org/10.1117/12.200613 . Submission:

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