  Ionization of atoms and molecules in laser fields can lead to various
interesting interference structures in the photoelectron spectrum. For the case
of a super-intense extreme ultraviolet laser pulse, we identify a novel
petal-like interference structure in the electron momentum distribution along
the direction of the laser field propagation. We show that this structure is
quite general and can be attributed to the Fresnel diffraction of the
electronic wavepacket by the nucleus. Our results are demonstrated by
numerically solving the time-dependent Schrodinger equation of the atomic
hydrogen beyond the dipole approximation. By building an analytical model, we
find that the electron displacement determines the aforementioned interference
pattern. In addition, we establish the physical picture of laser-induced
electron Fresnel diffraction which is reinforced by both quantum and
semiclassical models.
