Abstract
We present the formalism for the calculation of all second- and third-order nonlinear susceptibility coefficients based on the Landau–Devonshire free-energy expansion for cubic symmetry in the high-temperature paraelectric phase and the Landau–Khalatnikov dynamical equations. Second-order phase transition and single-frequency input waves are considered. Detailed results are given for all nonvanishing tensor elements of the second- and third-order nonlinear optical effects in the paraelectric and the tetragonal and rhombohedral ferroelectric phases.
© 2002 Optical Society of America
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