KERR-EFFECT FOR 3-DIMENSIONAL ELECTRIC-FIELDS

An optical method using the Kerr effect is useful to measure electric fields in dielectric liquids without disturbing the field. A conventio nal relation of the Kerr effect cannot be applied to the measurement o f a three-dimensional field, the direction of which is not always perp endicular to an incident light. We have derived the relation of the Ke rr effect which can be applied to three-dimensional measurement and co nfirmed it experimeptally.