Accession Number : ADD014273

Title :   Cerenkov Electrooptic Shutter.

Descriptive Note : Patent, Filed 1 Jul 87, patented 30 May 89,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Hartemann, Frederick ; Bekefi, George

Report Date : 30 May 1989

Pagination or Media Count : 9

Abstract : A system which couples Cerenkov emission with a gated electrooptic effect to allow viewing of Cerenkov radiation in sub nanosecond time-scales is disclosed. Cerenkov radiation is generated by transmitting an electron beam through a transparent medium with a high index of refraction. The Cerenkov radiation is then gated into a sample pulse of subano second duration by an electrooptic crystal which has an index of refraction controlled by an electric field. The electric crystal is opaque to the Cerenkov radiation until receiving a 6.0 kV voltage for about 750 picoseconds, upon which a pulsed sample of Cerenkov radiation is transmitted to a display system. Patents. (rrh)

Descriptors :   *CERENKOV RADIATION, *CRYSTALS, *ELECTROOPTICS, *PATENTS, *REFRACTIVE INDEX, *SHUTTERS(OPTICS), *VIEWERS, COUPLING(INTERACTION), DISPLAY SYSTEMS, ELECTRIC FIELDS, ELECTRIC POWER, ELECTRON BEAMS, EMISSION, GATES(CIRCUITS), TIME, TRANSPARENCE

Subject Categories : Electrooptical and Optoelectronic Devices
      Nuclear Physics & Elementary Particle Physics
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE