Tunable Control of Optical Wave Characteristics in High-Power Laser Systems via Two-Beam Coupling in Plasma

In the present study, tunable manipulation of the optical wave properties is investigated via the two-beam coupling phenomenon in both homogeneous and inhomogeneous nonlinear media, considering the parallel-beam configuration. The proposed model comprises two optical waves that enter the medium, and in addition to their interaction with the host material, they mutually exchange energy. This interaction engenders modifications in the amplitude, phase, and polarization state of the waves. Given the inherent flexibility in adjusting plasma parameters, plasma is employed as the nonlinear medium in this investigation. Considering the critical importance of tailoring optical characteristics—particularly the polarization state—for applications such as high-power lasers in electrodynamic systems, high-harmonic generation, laser fusion, and optical switching, the results of this study bear significant practical implications.