Abstract
Optical vortex beams1) carry an annular spatial profile and a nonzero orbital angular momentum of ℓh (where ℓ is the topological charge) per photon, owing to the phase singularity, and they have been investigated in various applications, such as optical trapping, optical communication, quantum optics, and super-resolution fluorescence microscopes. In particular, visible vortex sources with a selective handedness should be applied to nano/micro fabrication, for instance, the formation of chiral structured materials.
© 2019 Japan Society of Applied Physics, The Optical Society (OSA)
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