Abstract

Temperature dependencies of the half-wave voltage and natural linear birefringence in mechanically free quartz are measured at 1560 nm in the temperature range of 85–310 K. Measurements are carried out using a low-coherence interferometric scheme with a pair of identical quartz crystals independently linked with a scanning Michelson interferometer. Half-wave voltage $V_{11}$ driven by an electro-optic coefficient $r_{11}$ grows from 868 kV at 85 K to 923 kV at 310 K. The temperature derivative of natural linear birefringence $\mathrm{\Delta }n$ has nearly linear temperature dependence: $\partial \mathrm{\Delta }n/\partial T=-7.260\times {10}^{-7}–9.93\times {10}^{-10}\mathit{T}{\mathrm{K}}^{-1}$. Moderate temperature dependence of the electro-optic effect, along with other properties, makes quartz an appropriate sensing medium for electro-optic voltage sensors for the electric power industry.

© 2015 Optical Society of America

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