GENERATION OF VORTEX LIGHT USING COMPLEX GRATING STRUCTURES

Research and applications of vortex light are at the forefront and hot topics in the field of optics. In this paper, we introduce a convenient and practical method for preparing vortex light. Initially, we utilize the interference between vortex light and Gaussian light to generate a cross-shaped grating structure. Subsequently, employing inkjet printing technology, we print this cross-shaped grating pattern onto laser printing film. Finally, by illuminating the cross-shaped grating with a plane beam, we utilize the light absorption effect of the black areas on the film to achieve diffraction of light through the grating gaps, thus successfully preparing vortex light with different topological charges. Compared to traditional methods, this method does not require complex optical equipment or expensive materials, significantly reducing the technical barriers and economic costs of experiments, thus making vortex light generation more popular and feasible. Additionally, the simplicity and low-cost nature of this technique give it a broad application prospect in optical experimental teaching and basic scientific research, especially suitable for experimental environments with limited resources.