Optical high-sensitive field sensor using a Pockels crystal
- 1 December 1992
- journal article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 63 (12) , 5582-5585
- https://doi.org/10.1063/1.1143385
Abstract
The sensitivity of an optical field sensor with a Pockels crystal of LiNbO3 for measuring a field distribution in a long-gap discharge has been much improved by using an intensity difference method with an intensity-modulated laser beam. The signal-to-noise ratio (S/N) is also improved by 37 dB from that without the above-mentioned method. The resultant sensitivity of the new field measuring system is 100 times higher than that of the previous one. Finally, it is possible to measure an electric field down to 7.5 V/cm in the long-gap discharge with high accuracy corresponding to the S/N ratio of 20 dB and 1.5 V/cm with the accuracy of 6.0 dB.Keywords
This publication has 2 references indexed in Scilit:
- Electric field and current density in the impulse corona discharge in a rod/plane gapProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1968
- Measurement of electric fields at electrode surfacesElectronics Letters, 1965