Non-invasive electric-filed-detection device and method

Details Non-invasive electric-filed-detection device and method Non-invasive electric-filed-detection device and method

2004-08-18

2008-11-11

Lyons, Michael A (Department: 2877)

Optics: measuring and testing

By light interference

Reexamination Certificate

active

07450237

ABSTRACT:
The invention relates to a device which is used for the non-invasive detection of an electric potential or field, of the spatial and/or the temporal derivatives thereof, in a medium with a linear or quadratic electrooptical effect. The inventive device comprises: an optical source which is used to illuminate at least one zone of the medium that is to be probed with a light beam, the path of which defines an optical axis; and means for mapping the phase shift of the beam in the zone to be probed. Measuring means which are used to map the light beam phase shift comprise a confocal microscope in which the zone to be probed is placed in order to form an image of a plane of said zone.

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