In recent years, the radiative properties of atomic systems have consistently been a hot topic in the research fields of quantum optics and quantum information. With the continuous advancement of nanophotonics, quantum antennas have become an important model for the study of atomic radiation. In order to delve deeper into these phenomena, we investigate a system composed of two two-level atoms, and we study the two-photon emission phenomenon of diatomic system under the conditions of driving of directionally tunable laser field, dipole-dipole interaction between atoms, and spontaneous emission coherence. In this paper, we diagonalize the atomic Hamiltonian to obtain the system's eigenvalues and entangled states (symmetric and asymmetric states of two atoms), and use the rotating wave approximation to rotate the system into the laser frame. The system’s evolution is characterized mainly by the evolution of symmetric and asymmetric states, as well as the evolution of coherent terms. Our studies find that, for identical atoms, certain laser directions and geometric configurations can exclusively drive the superradiant and subradiant states of atoms, which can enhance the first-order interference effects of the atoms and markedly increase the probability of two-photon emission in specific detection directions. When the superradiant state of the atom is solely driven, there will be no coupling between the super- and subradiant states, resulting in a correlation function angular distribution that is symmetric along the atomic axis perpendicular direction. Further adjusting the laser direction causes the atomic interference patterns to shift, and the system will exhibit two-photon emission characteristics on one or both sides. For nonidentical atomic systems, due to detuning between the two atoms, the laser cannot drive the superradiant and subradiant states individually, and the influences of changing the laser direction on the coupling strength diminishes with the increasing of the detuning between the atoms. When the laser is in resonance with one of the atoms, due to the mutual atomic interactions, the other atom can achieve the strongest coherent effect without being in resonance with the laser. The research reveals that atomic detuning is crucial for the correlation values and angular distribution of the correlation function. By adjusting the atomic detuning and laser direction, the system can display highly directed one-sided two-photon emission characteristics. However, different dissipation rates will lead to a decrease in the probability of two-photon emission. Our studies can achieve highly directional two-photon emission on one or both sides, which provides a theoretical basis for the two-photon emission of nanoantennas.