Helicity inversion and generation of orthogonal, degenerate index states of generic C points

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/7838

Title:	Helicity inversion and generation of orthogonal, degenerate index states of generic C points
Authors:	Komal, Baby Deepa, S Pal, S.K. Ram, B S Bhargava Kumar, Sunil Senthilkumaran, P
Issue Date:	Oct-2021
Publisher:	IOP Publishing Ltd.
Citation:	Journal of Optics, 2021, Vol. 23, Article Number114001
Abstract:	We discuss a technique to invert the helicity of generic C points and generate its orthogonal state of polarization in a single step through a fork grating (FG). It is experimentally demonstrated that the beam in each of its diffraction orders possesses a degenerate C point index state. The diffraction phenomenon reported is helicity-dependent, in which left and right-handed ellipse field singularities are separated. The orthogonal polarization state of the input singularity is produced in one of the first diffracted orders of the grating. For every singularity that the grating produces, its orthogonal polarization state is also available in one of its diffraction orders. In contrast to a half-wave plate, where helicity inversion is accompanied by index inversion, a FG inverts helicity without inverting the index. Therefore, a FG can be used to perform multi-functions under generic C point illumination.
Description:	Restricted Access.
URI:	http://hdl.handle.net/2289/7838
ISSN:	2040-8978 2040-8986 (Online)
Alternative Location:	https://doi.org/10.1088/2040-8986/ac26ce
Copyright:	2021 IOP Publishing Ltd
Appears in Collections:	Research Papers (LAMP)

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