Research/Patents/US 4986635
US 4986635Tier 3 — General Defense

HIGH EFFICIENCY NONLINEAR KERR EFFECT FILTER

Assignee

US Government

Filed as: UNITED STATES OF AMERICA, THE, AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE

Filed

Oct 31, 1986

Granted

Jan 22, 1991

Location

TIPP CITY OH US

Abstract

An optical filter for blocking radiation of preselected wavelength is described which comprises a colloidal suspension of an optical medium and a multiplicity of microspheres of optical dimensions in a substantially regular three-dimensional array, the optical medium and microspheres comprising materials having matched indices of refraction in the absence of incident radiation, but at least one index of which varies nonlinearly with incident electric field whereby an index mismatch and resulting Bragg diffraction within the suspension is produced by incident radiation of the selected wavelength.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

May 7, 1987

Rescinded

Feb 28, 1990

Duration

2 years, 9 months

Inventor

  • 1ROBERT J. SPRY

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records