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Bond models of second and third harmonic generation in body centered and face centered crystal structures

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Document pages: 11 pages

Abstract: In this work, we describe the third-order and fourth-order tensors of body centered cubic system and face centered cubic system, and deduce the s-and p-polarized frequency doubling far field by using the simplified bond hyperpolarizability model. We also briefly discuss the volume nonlinear sources in this structure: quadrupole contribution, spatial dispersion, second and third harmonics of electric field, and deduce the corresponding fourth-order tensors. We prove that all third-order and fourth-order tensor elements need only one independent fitting parameter.

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