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Abstract content <br> (Max 300 words)
We show how to generate non-diffracting vector Bessel beams by implementing a spatial light modulator (SLM) and a q-plate, which is an azimuthally-varying birefringent plate. The SLM first creates the scalar Bessel beams which are then converted into vector Bessel beams by the use of the q-plate. We demonstrate how the orbital angular momentum (OAM) of these generated beams can be measured by performing a modal decomposition on each of the beam’s polarization components. This is achieved by separating the polarization components through a circular polarization beam-splitter before performing the modal decomposition. We study both single charged Bessel beams as well as superpositions and the results are in good agreement with theory.
Main supervisor (name and email)<br>and his / her institution
Prof. Andrew Forbes, AForbes1@csir.co.za, CSIR National Laser Centre
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