Photoelectron-momentum distribution of H2+ molecules at different internuclear distances in an elliptically polarized laser field

We investigate molecular photoelectron-momentum distribution (MPMD) and molecular photoelectron angular distribution (MPAD) of oriented ${\mathrm{H}}_{2}{}^{+}$ under frozen-nuclei approximation driven by elliptically polarized laser pulse by numerically solving a two-dimensional time-dependent $\mathrm{Schr}\stackrel{\ifmmode \ddot{}\else \"{}\fi{}}{\mathrm{o}}\mathrm{dinger}$ equation. The results show that the MPMDs and MPADs are sensitive to the internuclear distance, which is illustrated by the initial MPMDs and the evolution of MPMDs. In addition, they are also dependent on laser ellipticity and wavelength. When the laser wavelength is $5\phantom{\rule{4pt}{0ex}}\mathrm{nm}$, the phenomenon of laser-induced electron diffraction can be observed in both MPMD and MPAD.