Dynamic generation of vortex beam based on partial phase modulation of electro-optical crystal plate

With the increasing demand for potential applications of vortex beams in various fields modern optics, generation optical has attracted great interest. Based on a flat plate made an electro-optical crystal, method to generate assisted by Pockels effect is proposed. This allows orbital-angular-momentum-tunable range <inline-formula><tex-math id="M2">\begin{document}$ \pm 2\hbar$\end{document}</tex-math><alternatives><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="20-20220835_M2.jpg"/><graphic xlink:href="20-20220835_M2.png"/></alternatives></inline-formula> with finite phase-modulated region. We simulate propagation transmitted from and investigate orbital-angular-momentum-mode spectra beams. The mode accord well simulation results. proposed will be applied where tunable are required, such as communication manipulation.