Optical Lattice‐Induced Polarization State Modulation of Vector Vortex Fields

Abstract Vector vortex beams, featuring spatially structured polarization states and helical phase fronts, emerge as a critical solution for enhancing optical information capacity beyond the constraints of traditional communication paradigms. In this paper, a coherent modulation strategy is established for creating two dimension (2D) vector vortex far‐field diffraction arrays through light‐atom interactions under electromagnetically induced transparency (EIT). A dynamically reconfigurable optical lattice is engineered via interference between a Gaussian‐coupled field and a vortex‐coupled field with adjustable topological charge. The atomic medium, when subjected to this lattice modulation, facilitates the diffraction of probe vector light fields into high‐order vector vortex diffracted spots. This system enables multi‐parameter tuning to significantly enhance diffraction efficiency. Results demonstrate that Comprehensive optimization of coupling field intensity, interference beam power distribution, and frequency detuning significantly enhances the relative diffraction efficiency. Moreover, the polarization state distribution of diffraction fields can be reconfigured by controlling optical lattice topological charges. This atomic medium‐based optical lattice modulation framework offers flexibility in tailoring structured light arrays, bridging fundamental studies of structured light‐matter interactions with advanced applications in high‐dimensional optical encoding, quantum state engineering, and multifunctional optical manipulation systems.