Speaker
Mr
NKOSIPHILE ANDILE BHEBHE
(UNIVERSITY OF THE WITWATERSRAND)
Description
Laser beams structured to have a uniform peak intensity profile (flat-top) have become ubiquitous and a topic of interest in many research fields. However, such beams alter their intensity profile as they propagate in free space. This problem can be overcome by generating vector flat-top beams. Here, we present theoretical simulations and demonstrate experimentally the creation of propagation invariant vector flat-top beams. By utilizing the spatial light modulator’s polarization dependent efficiency, we coaxially superimpose a Gaussian and donut beam with orthogonal polarization states. We employ a classical and quantum toolkit to characterize and analyse the vector state of the resulting vector flat-top beam during propagation. As an example, we demonstrate the adaptability of these beams in an optical tweezer system however these beams can be of impact in a wide range of applications.
Supervisor details<br><b>If not a student, type N/A.</b><br>Student abstract submision<br>requires supervisor permission:<br>please give their name,<br> institution and email address.
Prof. Andrew Forbes
University of the Witwatersrand
andrew.forbes@wits.ac.za
| Consideration for<br>student awards<br><b>Choose one option<br>from those below.</b><br>N/A<br>Hons<br>MSc<br>PhD | PhD |
|---|---|
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Primary authors
Prof.
Andrew Forbes
(U. Witwatersrand)
Dr
Carmelo Rosales-Guzman
(University of the Witwatersrand, Johannesburg)
Mr
NKOSIPHILE ANDILE BHEBHE
(UNIVERSITY OF THE WITWATERSRAND)
