Independent Manipulation of Topological Charges and Polarization Patterns of Optical Vortices

We present a simple and flexible method to generate various vectorial vortex beams (VVBs) with a Pancharatnam phase based on the scheme of double reflections from a single liquid crystal spatial light modulator (SLM). In this configuration, VVBs are constructed by the superposition of two orthogonal...

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Bibliographic Details
Published inScientific reports Vol. 6; no. 1; p. 31546
Main Authors Yang, Ching-Han, Chen, Yuan-Di, Wu, Shing-Trong, Fuh, Andy Ying-Guey
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 16.08.2016
Nature Publishing Group
Subjects
639/624/1107
639/766/400
Humanities and Social Sciences
Light
multidisciplinary
Optical properties
Polarization
Science
Vortices
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Summary:We present a simple and flexible method to generate various vectorial vortex beams (VVBs) with a Pancharatnam phase based on the scheme of double reflections from a single liquid crystal spatial light modulator (SLM). In this configuration, VVBs are constructed by the superposition of two orthogonally polarized orbital angular momentum (OAM) eigenstates. To verify the optical properties of the generated beams, Stokes polarimetry is developed to measure the states of polarization (SOP) over the transverse plane, while a Shack–Hartmann wavefront sensor is used to measure the OAM charge of beams. It is shown that both the simulated and the experimental results are in good qualitative agreement. In addition, polarization patterns and OAM charges of generated beams can be controlled independently using the proposed method.
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ISSN:2045-2322
2045-2322
DOI:10.1038/srep31546