Arbitrary spatially variant polarization by unitary transformations in a common path interferometer

We introduce a novel, common path interferometric technique, for generating hybrid spatially variant polarized fields and Poincaré beams. The technique is based on unitary polarization transformations employing a single spatial light modulator in a Sagnac-like common path interferometer. This techni...

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Bibliographic Details
Published in:Journal of optics (2010) 2022-07, Vol.24 (7), p.75604
Main Authors: Olvera Santamaría, M Á, Tlapale Aguilar, A, Ostrovsky, A S
Format: Article
Language:English
Subjects:
laser beam shaping
liquid-crystal devices
Poincaré beams
polarization
unitary transformations
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Summary:We introduce a novel, common path interferometric technique, for generating hybrid spatially variant polarized fields and Poincaré beams. The technique is based on unitary polarization transformations employing a single spatial light modulator in a Sagnac-like common path interferometer. This technique allows generating arbitrary fields as a superposition of orthogonal elliptically polarized vortex basis with opposite handedness. We demonstrate the generation of such fields theoretically and verify it experimentally for azimuthal and spiral polarization. As an example of application, we generated a radially polarized ring-shaped field and characterize it by Stokes polarimetry.
ISSN:2040-8978
2040-8986
DOI:10.1088/2040-8986/ac6d68