Two complementary methods have now been proposed for deriving phase-shifting algorithms that correct for both nonlinear and spatially nonuniform phase shifts. Some advantages of symmetrical algorithms are outlined, and a simple method for ensuring algorithmic symmetry is presented. Noise susceptibility of the algorithms and the phase-shifter calibration are also discussed briefly.
© 1998 Optical Society of America
(050.5080) Diffraction and gratings : Phase shift
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
Kenichi Hibino, Kieran G. Larkin, Bob F. Oreb, and David I. Farrant, "Phase-shifting algorithms for nonlinear and spatially nonuniform phase shifts: reply to comment," J. Opt. Soc. Am. A 15, 1234-1235 (1998)