Abstract
Abstract
A sensor has been developed for low frequency and DC electric fields E. The device is capable of measuring fields with $$\varDelta \mathrm{E}= 4$$ΔE=4 (1) V/cm resolution. It is based on a Y-cut Z-propagation lithium niobate electro-optic crystal. For a particular commercially available bare crystal, we achieved an in air time constant $$\tau _\mathrm{c}(\mathrm air)= 6.4(1.8)$$τc(air)=6.4(1.8) h for the decay of the electro-optic signal. This enables field monitoring for several hours. As an application, we demonstrated that a constant electric field $$E^{\mathrm{ext}} = 640$$Eext=640 V/cm applied via external electrodes to a particular spherical glass container holding an Xe/He gas mixture decays inside this cell with a time constant $$\tau _{E}^{\mathrm{glass}} = 2.5(5)$$τEglass=2.5(5) h. This is sufficient for the needs of experiments searching for a permanent electric dipole moment in $$^{129}$$129Xe. An integrated electric field sensor has been constructed which is coupled to a light source and light detectors via optical fibers. The sensor head does not contain any electrically conducting material.
Funder
The research programme Broken Mirrors and Drifting Constants with project number FOM 125, which is nanced by the Dutch Research Council
Publisher
Springer Science and Business Media LLC
Subject
General Physics and Astronomy,Physics and Astronomy (miscellaneous),General Engineering
Cited by
2 articles.
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1. ELECTRIC FIELD SENSOR WITH STABILIZED INTERFEROMETRIC READOUT;2021 21st International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers);2021-06-20
2. Correction to: Electro-optic sensor for static fields;Applied Physics B;2019-12-17