title: Complex encoding of rotation-invariant filters onto a single phase-only spatial light modulator.
abstract: The accuracy and flexibility of the technique proposed by Davis et al. [Appl. Opt. 35, 2488 (1996)] for the encoding of the amplitude and the phase of a filter onto a single liquid-crystal spatial light modulator operating in a phase-only regime has been exploited to implement several filter designs in a convergent optical correlator. We have selected some filters, that given their mathematical structure showing some degree of rotational invariance, or having a parameter to regulate their behavior, require amore precise encoding. We present correlation results of outstanding quality for various rotationally invariant filter designs that have never been previously implemented with a real-time optical correlator.
authors.affiliation: Universidad Industrial de Santander, AA 678 Bucaramanga, Colombia. gualdron@uis.edu.co
authors.forename: Oscar
authors.initials: O
authors.lastname: Gualdrón
authors.forename: Jeffrey
authors.initials: J
authors.lastname: Davis
authors.forename: Josep
authors.initials: J
authors.lastname: Nicolás
authors.forename: Juan
authors.initials: J
authors.lastname: Campos
authors.forename: Maria J
authors.initials: MJ
authors.lastname: Yzuel