Accession Number : ADD017615

Title :   Preparation of Permanent Photowritten Optical Diffraction Gratings in Irradiated Glasses.

Descriptive Note : Patent, Filed 30 Oct 92, patented 6 Jun 95,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Williams, Glen M ; Dutt, David A ; Ruller, Jacqueline A ; Friebele, Edward J

Report Date : 06 Jun 1995

Pagination or Media Count : 8

Abstract : A fast process for photowriting a permanent, high efficiency optical grating comprises darkening glass by irradiation and photobleaching the darkened glass by exposing the glass to interfering writing laser beams, thereby forming the grating. (MM)

Descriptors :   *GLASS, *LASER BEAMS, *GRATINGS(SPECTRA), *OPTICAL PROCESSING, *PATENTS, LIGHT SCATTERING, REFRACTIVE INDEX, X RAYS, DIFFRACTION, IRRADIATION, ABSORPTION SPECTRA, ARGON LASERS, HELIUM NEON LASERS, OPTICAL FILTERS

Subject Categories : Ceramics, Refractories and Glass
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE