We observe the interference of de Broglie waves in the diffraction near field of a microfabricated grating. The reduction of the grating period by self-imaging of second to seventh order is spatially resolved. We investigate the dependence of this effect on the de Broglie wavelength by a time-to-flight technique.
© 1997 Optical Society of America
S. Nowak, Ch. Kurtsiefer, T. Pfau, and C. David, "High-order Talbot fringes for atomic matter waves," Opt. Lett. 22, 1430-1432 (1997)