Abstract
Optical vortex fields with a tilted phase singularity line are associated with a tilted orbital angular momentum (OAM). In this Letter, we propose a method to generate optical vortex fields with arbitrary OAM orientation based on the time-reversal method, vectorial diffraction theory, and a 4Pi optical configuration. The ability to control the 3D OAM orientation may find applications in optical tweezing, light–matter interaction, and spin–orbital coupling.
© 2022 Optica Publishing Group
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22 March 2023: A typographical correction was made to the author listing.
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