TY  - JOUR
AU  - Grasdijk, J. O.
AU  - Bai, X. F.
AU  - Engin, I.
AU  - Jungmann, K.
AU  - Krause, Hans-Joachim
AU  - Niederländer, Benjamin
AU  - Offenhäusser, Andreas
AU  - Repetto, M.
AU  - Willmann, L.
AU  - Zimmer, S.
TI  - Electro-optic sensor for static fields
JO  - Applied physics / B
VL  - 125
IS  - 11
SN  - 0946-2171
CY  - Berlin
PB  - Springer76635
M1  - FZJ-2019-06173
SP  - 212
PY  - 2019
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000491443300001
DO  - DOI:10.1007/s00340-019-7326-5
UR  - https://juser.fz-juelich.de/record/867550
ER  -