The nature of some nonlinear optic coefficients in ferroelectrics

J.F. Webb, Khian-Hooi Chew, J. Osman, D.R. Tilley

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    Nonlinear optic coefficients that have been calculated through the resonant region in the far-infrared are looked at. It is possible to make such calculations by using a systematic expansion based on the Landau-Devonshire expression for the free energy together with the Landau-Khalatnikov dynamical equations. In this paper the coefficients considered have been calculated for an isotropic paraelectric phase. Two third order examples are presented: third harmonic generation and the d.c. Kerr effect. Experimental and practical implications include those for far-infrared sources and Terrahertz wave technology.
    Original languageEnglish
    Pages (from-to)117-121
    Issue number1-4
    Publication statusPublished - 2001

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    Webb, J. F., Chew, K-H., Osman, J., & Tilley, D. R. (2001). The nature of some nonlinear optic coefficients in ferroelectrics. Ferroelectrics, 251(1-4), 117-121.