title: Equilateral hyperbolic zone plates: their use in the alignment of a Mach-Zehnder interferometer.
abstract: An equilateral hyperbolic zone plate has been recorded by coherent superimposition of two cylindrical waves with coplanar foci. This zone plate has been used to align quickly and easily a Mach-Zehnder interferometer.
authors.forename: J M
authors.initials: JM
authors.lastname: Cuadrado
authors.forename: M V
authors.initials: MV
authors.lastname: Perez
authors.forename: C
authors.initials: C
authors.lastname: Gomez-Reino