Generalized Yamaguchi correlation factor for coherent quadratic phase speckle metrology systems with an aperture.
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.
Kelly
Damien P
DP
School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Dublin, Ireland.
Ward
Jennifer E
JE
Gopinathan
Unnikrishnan
U
Hennelly
Bryan M
BM
O'Neill
Feidhlim T
FT
Sheridan
John T
JT