Accession Number : ADD012971

Title :   Dielectric Air-Interface Plasma Optical Power Limiter.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Seitel,Steven C ; Marrs,C D

Report Date : 01 Jul 1986

Pagination or Media Count : 6

Abstract : The present invention is a device for limiting the power or energy output of a laser system. In particular, the present invention relates to devices which create a plasma to shield sensitive components of laser systems from high energy laser bursts. A dielectric air-interface plasma optical power limiter is made by placing a plurality of plasma initiation sites on the surface of an optical component, such as a mirror or lens. The sites are particles of a material that emits large numbers of free electrons above a threshold power level. The sites are placed on the surface by vapor deposition or any other manner. For some materials, a natural tendency of the material to adhere to the surface is sufficient. The sites are small speckles on the surface and do not form a uniform coating of the surface. Most of the surface area of the optical component is uncovered.

Descriptors :   *PATENTS, *OPTICAL EQUIPMENT, *PLASMAS(PHYSICS), *FREE ELECTRONS, *LASERS, *PARTICLES, *SHIELDING, COATINGS, ENERGY, OUTPUT, POWER LEVELS, SENSITIVITY, SITES, SURFACES, THRESHOLD EFFECTS, VAPOR DEPOSITION

Subject Categories : Optics
      Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE