title: High-efficiency joint-transform correlator.
abstract: A technique that increases the efficiency of a conventional joint-transform correlator is proposed. By modifying the joint-transform power spectrum of the input objects by using a spatial sampling method, the readout light as well as the physical area of the square-law detector can be fully utilized. As a result, the output correlation intensity can be substantially increased. Cases of using coherent and partially coherent readout light are discussed, and experimental results are presented.
authors.forename: F T
authors.initials: FT
authors.lastname: Yu
authors.forename: E C
authors.initials: EC
authors.lastname: Tam
authors.forename: D A
authors.initials: DA
authors.lastname: Gregory