title: Generalized Yamaguchi correlation factor for coherent quadratic phase speckle metrology systems with an aperture.
abstract: In speckle-based metrology systems, a finite range of possible motion or deformation can be measured. When coherent imaging systems with a single limiting aperture are used in speckle metrology, the observed decorrelation effects that ultimately define this range are described by the well-known Yamaguchi correlation factor. We extend this result to all coherent quadratic phase paraxial optical systems with a single aperture and provide experimental results to support our theoretical conclusions.
authors.affiliation: School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Dublin, Ireland.
authors.forename: Damien P
authors.initials: DP
authors.lastname: Kelly
authors.forename: Jennifer E
authors.initials: JE
authors.lastname: Ward
authors.forename: Unnikrishnan
authors.initials: U
authors.lastname: Gopinathan
authors.forename: Bryan M
authors.initials: BM
authors.lastname: Hennelly
authors.forename: Feidhlim T
authors.initials: FT
authors.lastname: O'Neill
authors.forename: John T
authors.initials: JT
authors.lastname: Sheridan