Second-order susceptibilities of ZnO nanorods from forward second-harmonic scattering
نویسندگان
چکیده
A forward second-harmonic scattering method for determining the second-order susceptibility coefficients of ZnO nanorods on the order of 100 nm in diameter is presented. The long coherence length and strong intensity of the forward second-harmonic signal allow for a simple theoretical model to match the experimental measurements; this results in getting accurate values for the second-order susceptibility tensors. Different signs of d31 and d33 are confirmed. The results also show that Kleinman’s symmetry is destroyed at a near-resonant second-harmonic wavelength of 405 nm for the ZnO nanorods. © 2009 American Institute of Physics. DOI: 10.1063/1.3093903
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