In:
Journal of the Optical Society of America A, Optica Publishing Group, Vol. 37, No. 11 ( 2020-11-01), p. 1806-
Abstract:
Free-space propagation and experimental generation of a partially coherent radially polarized (PCRP) vortex beam were studied recently [ Opt. Express 24 , 13714 ( 2016 ) OPEXFF 1094-4087 10.1364/OE.24.013714 ]. In this work, we explore the statistical properties of such a PCRP vortex beam propagating in a uniaxial crystal. We show that the anisotropy of the refractive index of the uniaxial crystal induces the asymmetrical distribution of the intensity, the degree and the state of polarization, as well as the degree of coherence of the beam during propagation. Further, by comparing the asymmetrical distribution of the statistical properties of the PRCP vortex beam with those of a PRCP beam without a vortex phase, we find that the asymmetrical features can be used for determining whether a PCRP beam carries the vortex phase. Further, we show that from the far-field distribution of the degree of coherence, we could quantify the topological charge and distinguish the handedness of the vortex phase. Our findings provide a novel approach for measuring the phase information of the partially coherent vortex beams.
Type of Medium:
Online Resource
ISSN:
1084-7529
,
1520-8532
DOI:
10.1364/JOSAA.403719
Language:
English
Publisher:
Optica Publishing Group
Publication Date:
2020
SSG:
24,1
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