Electrooptic probe for measuring voltage of an object having a high permittivity film fixed on an end face of a reflecting film fixed on an electrooptic material

摘要

An electrooptic probe for measuring voltage of an object without contact with the object. The electrooptic probe according to the present invention includes an electro-optic material having a refractive index to light that varies in accordance with an electric field, a conductive reflecting film for reflecting an incident beam transmitted through the electro-optic material, fixed to an end face of the electro-optic material facing the object to be measured, a transparent electrode fixed on the other end face of the electro-optic material, and a high permittivity film fixed on an end face of the reflecting film facing the object to be measured.