Second-order susceptibilities of ZnO nanorods from forward second-harmonic scattering
by Geren, K.; Liu, S. W.; Zhou, Huajun; Zhang, Yanpeng; Tian, Z. Ryan; Xiao, Min
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 d(31) and d(33) 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.
- Journal of Applied Physics
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