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Abstract
A combined experimental and numerical investigation has been conducted to study piezoelectric resonance process in relation to the strain gradient, the local polarization, and the displacement current in a piezoelectric crystal-resonator. Experimental discoveries showed that at certain sub-wavelengths of the fundamental piezoelectric resonant frequencies of a given resonator, electrooptic coefficients and also the optical transmission in an otherwise opaque configuration are greatly enhanced. This paper reports preliminary study by finite element analysis modeling on microwave transmission behavior when the piezoelectric material is modulated by periodic polarization distribution defined by piezoelectric resonance or generated by periodic poling. Transmission parameters are simulated in wide frequency range to characterize wave propagation behavior of the material in various local polarization conditions related to piezoelectric transverse or longitudinal resonance modes.
Acknowledgment
Financial support by the National Science Foundation under grant number 1002380 and by Office of Naval Research under grant number N000140810854 is gratefully acknowledged.