title: Frequency-plane filtering with an achromatic optical transform.
abstract: A holographic matched filter has been recorded in the frequency plane of an achromatic optical transform configuration. Sandwich-type zone plates and an achromatic doublet are used to form the transform system, which is in cascade with the hologram filter and an achromatic-fringe interferometer. Correlation experiments are reported in which a large space-bandwidth and broad spectral range are obtained.
authors.forename: G M
authors.initials: GM
authors.lastname: Morris
authors.forename: N
authors.initials: N
authors.lastname: George