Non-Invasive Electro-Magnetic Field Sensor.
Abstract
The development of a non-invasive electromagnetic field sensor that would not perturb the electric field being measured was investigated. Electro-optic crystals were selected such that a difference in the index of refraction along the optical axes would result in a change in transmission through the optical system when an electric field was applied. Through the choice of appropriate crystals and crystal geometries, various sensitivities bited in electro-optic crystals is sensitive to an electric field in only one direction. A sensor can be developed using multiple crystals mounted orthogonally that can measure both the strength and direction of the electric field. The electronics and signal processing equipment can be located a great distance from the sensor allowing for real time electric field measurements in hostile environments. This phase of research was directed towards selecting suitable electro-optic crystals for the design of such a sensor and towards determining the optimum means of signal detection.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1986
- Accession Number
- ADA173683
Entities
People
- Bruce N. Nelson
- Christoph Menzel
- Thomas G. Diguisseppe