Generation of single-charge optical vortices with an uniaxial crystal.
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We implement a novel experimental technique for generating mono- and polychromatic optical beams with on-axis single vortex by manipulating polarization singularities of light in birefringent crystals. We demonstrate that, in contrast to the well-known optical quadrupoles generated by beams propagating along the optical axis of a uniaxial crystal, the beam bearing isolated single-charge on-axis vortex can be generated if the incident beam is tilted with respect to the optical axis at a certain angle.
complete list of authors
Voylar, Alexander||Shvedov, Vladlen||Fadeyeva, Tatyana||Desyatnikov, Anton S||Neshev, Dragomir N||Krolikowski, Wieslaw||Kivshar, Yuri S