%0 Journal Article
%A Grasdijk, J. O.
%A Bai, X. F.
%A Engin, I.
%A Jungmann, K.
%A Krause, Hans-Joachim
%A Niederländer, Benjamin
%A Offenhäusser, Andreas
%A Repetto, M.
%A Willmann, L.
%A Zimmer, S.
%T Electro-optic sensor for static fields
%J Applied physics / B
%V 125
%N 11
%@ 0946-2171
%C Berlin
%I Springer76635
%M FZJ-2019-06173
%P 212
%D 2019
%X A sensor has been developed for low frequency and DC electric fields E. The device is capable of measuring fields with Delta-E = 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_c(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 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-glass = 2.5(5) h. This is sufficient for the needs of experiments searching for a permanent electric dipole moment in 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000491443300001
%R 10.1007/s00340-019-7326-5
%U https://juser.fz-juelich.de/record/867550