Multilocalization of interference fringes in the Mach-Zender interrferometer

Abstract

The phenomenon of multiple localization in a Mach Zehnder interferometen illummitated by a system of incoherent equidistant linear sources is studied. The relation between multilcalization and diffraction at a grating of period equal to the spacin between the sources composing the illumination system is analysed. Using the former relation an adjustement method is developed for interferometers of separated beams. This method enables the interference fringes at the differents localization planes to be seen without readjusting the alignement. This enables to observe perturbations at differents planes with the simple focalization of the camera.