The fractional Talbot effect brings into play a superimposition of shifted and complex weighted replicas of the original object. This phenomenon can be used to replicate images of nonperiodic objects by means of Talbot array illuminators. These diffractive elements can also be used to concentrate replicas into a single image. These techniques are useful for several applications such as beam shaping.
© 2003 Optical Society of America
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.1950) Diffraction and gratings : Diffraction gratings
(110.0110) Imaging systems : Imaging systems
(110.6760) Imaging systems : Talbot and self-imaging effects
Habib Hamam, "Talbot Imaging and Unification," Appl. Opt. 42, 7052-7059 (2003)