Spin-to-orbital momentum conversion via electrooptic Pockels effect in crystals

Abstract

In the present work we have demonstrated a possibility for real-time operation by orbital an-gular momentum (OAM) of optical beams via Pockels effect in solid crystalline materials. Basing on the analysis of optical Fresnel ellipsoid perturbed by conically shaped electric field, we have shown that the point groups of crystals convenient for the conversion of spin angular momentum (SAM) to OAM should contain a three-fold symmetry axis or a six-fold inversion axis. The results of our experimental studies and theoretical simulations of the SAM-to-OAM conversion efficiency carried out for LiNbO3 crystals agree well with each other.

22 pages, 11 figures

References in corpus (4)

• Optical spin-to-orbital angular momentum conversion in inhomogeneous anisotropic media
• Efficient generation and sorting of orbital angular momentum eigenmodes of light by thermally tuned q-plates
• Photon spin-to-orbital angular momentum conversion via an electrically tunable $q$-plate
• Optical anisotropy induced by torsion stresses in LiNbO3 crystals: appearance of an optical vortex

Cited by in corpus (1)

• Generation of double-charged optical vortices on the basis of electrooptic Kerr effect