  A theoretical study of the interference pattern imprinted on the doubly
differential momentum distribution of the photoelectron due to atomic
ionization induced by a short laser pulse is developed from a semiclassical
standpoint. We use the semiclassical two-step model of Shvetsov-Shilovski et
al. (Phys. Rev. A 94, 013415) to elucidate the nature of the holographic
structure. Three different types of trajectories are characterized during the
ionization process by a single cycle pulse with three different types of
interferences. We show that the holographic interference arises from the
ionization yield only during the first half cycle of the pulse, whereas the
coherent superposition of electron trajectories during the first half cycle and
the second half cycle gives rise to two other kinds of intracycle interference.
Although the picture of interference of a reference beam and a signal beam is
adequate, we show that our results for the formation of the holographic pattern
agree with the glory rescattering theory of Xia et al. (Phys. Rev. Lett. 121,
143201). We probe the two-step semiclassical model by comparing it to the
numerical results of the time dependent Schr\"odinger equation.
