22-30 July 2021
North-West University
Africa/Johannesburg timezone
More Information Coming Soon

ACCELERATING POLARIZATION STATES AND STRUCTURES

27 Jul 2021, 15:15
15m
Potchefstroom Campus (North-West University)

Potchefstroom Campus

North-West University

Oral Presentation Track C - Photonics Photonics

Speaker

Wagner Tavares Buono (University of the Witwatersrand)

Description

Optical fields can often show unexpected effects when interference effects are used. Examples of these are angularly accelerating beams. In this work we present a novel structure of light that exhibits State-of-Polarization (SoP) structures that rotate with acceleration and deceleration when propagating in free space. We achieve this by creating a superposition of beams with accelerated transport of intensity in different polarization components, in such a way that the intensity profile remains constant, but each polarization projection changes differently. The Stokes vector for each point of the transverse profile exhibits a circular trajectory in the Poincaré sphere, showing an accelerated rotation around the axis of the generating polarization basis. We hope that this vector field with non-trivial structures can be used to study the interaction of vector light with matter.

Level for award;(Hons, MSc, PhD, N/A)?

N/A

Apply to be considered for a student ; award (Yes / No)?

No

Primary authors

Wagner Tavares Buono (University of the Witwatersrand) Mr Keshaan Singh (University of the Witwatersrand) Angela Dudley (CSIR National Laser Centre) Andrew Forbes (U. Witwatersrand)

Presentation Materials