VERFAHREN UND SENSOR ZUM MESSEN VON ELEKTRISCHEN SPANNUNGEN UND/ODER ELEKTRISCHEN FELDSTAERKEN

摘要

The invention relates to a process for measuring electric voltages and/or electric fields by the use of a crystal (1) with an electro-optical (Pockels) effect. To this end, in a direction transverse to the direction of propagation (y direction) of a light wave (17') polarised in the z direction, an electric field intensity gradient is generated in the crystal (1) in the direction from which results a corresponding gradient in the refractive index n of the crystal (1). This produces a deflection of the light wave (17') in the crystal which depends upon the field intensity and, on emergence, it is used as a measure for the voltage of field intensity. A suitable sensor for this purpose is also described.