Abstract:
:In this article we show that diffraction segregates the polarization singularities according to their handedness. Polarization singularities are superpositions of left and right handed circular polarization vortex states. In the superposition, the component states possess different orbital angular momenta depending on the type of the singularity. A fork grating that can generate different orbital angular momentum (OAM) states in different diffraction orders is shown to segregate right and left handed polarization singularities. A V-point polarization singularity that corresponds to one combination of OAM states incident on the fork grating is found to diffract in such a way that the same OAM combination does not occur in all the nonzero diffraction orders. As a result, each of the diffraction orders will have different polarization singularities. This OAM transfer by the fork grating segregates the right and left handed polarization singularities thereby, making the diffraction helicity dependent.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Deepa S,B S BR,Senthilkumaran Pdoi
10.1038/s41598-019-48923-6subject
Has Abstractpub_date
2019-08-28 00:00:00pages
12491issue
1issn
2045-2322pii
10.1038/s41598-019-48923-6journal_volume
9pub_type
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