Accession Number:

ADD014620

Title:

Nonintrusive Electro-Optic Field Sensor.

Descriptive Note:

Patent Application, Filed 17 Aug 90,

Corporate Author:

DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s):

• Hales, Walter L.

Report Date:

1990-08-17

Pagination or Media Count:

8.0

Abstract:

Utilizing the property of electro-optic crystal which changes its index of refraction in the presence of electric field, such a crystal is placed inside the resonant cavity of a Fabry-Perot type interferometer. Laser light travelling through the cavity and the crystal experiences modified optical path length in the presence of electric field. The fringe pattern at the focal plan is observed and used to detect and measures the ambient electric field. Patent applications. rrh

Descriptors:

• *MEASURING INSTRUMENTS
• *ELECTRIC FIELDS
• *FABRY PEROT INTERFEROMETERS
• *SINGLE CRYSTALS
• *PATENT APPLICATIONS
• ELECTROOPTICS
• REFRACTIVE INDEX
• CAVITY RESONATORS
• FOCAL PLANES

Subject Categories:

• Electrooptical and Optoelectronic Devices
• Test Facilities, Equipment and Methods
• Optics
• Crystallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE