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Temperature dependence of electro-optic effect and natural linear birefringence in quartz measured by low-coherence interferometry

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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 V11 driven by an electro-optic coefficient r11 grows from 868 kV at 85 K to 923 kV at 310 K. The temperature derivative of natural linear birefringence Δn has nearly linear temperature dependence: Δn/T=7.260×1079.93×1010TK1. 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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