Abstract

The basic quadratic electro-optic properties of $\mathrm{Pb}({\mathrm{Mg}}_{1/3}{\mathrm{Nb}}_{2/3}){\mathrm{O}}_3\text{-}{\mathrm{PbTiO}}_3$ (PMN-PT) transparent ceramics have been studied under both DC and AC electric field bias. The contribution of piezoelectric resonance to electro-optic effect for this quadratic electro-optic ceramics material has been experimentally demonstrated and theoretically analyzed. It is found that, at the piezoelectric resonance frequencies, the piezoelectric induced electro-optic effect dominates and leads to a dramatically high sensitivity for weak electric signal detection. About 20 dB signal-to-noise ratio is attained when detecting AC electric field strength of $1\mathrm{V}/\mathrm{m}$ with optimized DC bias. Besides, the effects of AC frequency and amplitude on halfwave voltage $V_{\pi }$ of PMN-PT are investigated.

©2012 Optical Society of America

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