title: Nanosecond image processing using stimulated photon echoes.
abstract: Processing of two-dimensional images on a nanosecond time scale is demonstrated using the stimulated photon echoes in a rare-earth-doped crystal (0.1 at. % Pr(3+):LaF(3)). Two spatially encoded laser pulses (pictures) resonant with the (3)P(0)-(3)H(4) transition of Pr(3+) were stored by focusing the image pulses sequentially into the Pr(3+):LaF(3) crystal. The stored information is retrieved and processed by a third read pulse, generating the echo that is the spatial convolution or correlation of the input images. Application of this scheme to high-speed pattern recognition is discussed.
authors.forename: E Y
authors.initials: EY
authors.lastname: Xu
authors.forename: S
authors.initials: S
authors.lastname: Kröll
authors.forename: D L
authors.initials: DL
authors.lastname: Huestis
authors.forename: R
authors.initials: R
authors.lastname: Kachru
authors.forename: M K
authors.initials: MK
authors.lastname: Kim