General analyses on effects of nonparallel grating planes in Talbot interferometry

Abstract

The effects of a small inclination between the two grating planes on the moire fringes in Talbot mterferometry are studied for the most general case of an arbitraiy inclination under the illumination of a plane wave. The inclination is generated by rotating the beam-splitter grating by two small angles around the two perpendicular axes laid on the grating plane and when both axes have an arbitrary angle with respect to the line direction of the grating. Some simple judgement and adjustment methods for the inclination are presented. The results obtained by theoretical analysis are also verified by experiments.