4-8 July 2016
Kramer Law building
Africa/Johannesburg timezone
<a href="http://events.saip.org.za/internalPage.py?pageId=10&confId=86">The Proceedings of SAIP2016</a> published on 24 December 2017

A beam quality measure for vector beams

7 Jul 2016, 10:20
20m
5C (Kramer Law building)

5C

Kramer Law building

UCT Middle Campus Cape Town
Oral Presentation Track C - Photonics Photonics

Speaker

Ms Hend SROOR (University of The Witwatersrand)

Level for award<br>&nbsp;(Hons, MSc, <br> &nbsp; PhD, N/A)?

PhD

Abstract content <br> &nbsp; (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>

Cylindrical vector(CV) beams are spatial modes of light with spatially variant polarization states in the transverse profile. Over the years, CV beams have found their way into plenty of applications ranging from material processing and lithography to electron acceleration and particle trapping.

Though qualitative measurements are routinely used to analyse CV beams, there is no quantitative measure of CV beam purity. Here, we introduce new measure, the vector quality factor (VQF), that maps the purity of CV beams to a scale ranging from 0 to 1. We demonstrate a simple optical setup to generate and detect CV beams using a birefringent phase plate known as a q-plate. Real time tomographic measurements are performed using principles of modal decomposition and demultiplexing. Real time measurements are encoded as a demultiplexing of the modal decomposition of the CV beam into its circular basis states. The measurements give a twelve on-axis intensity outputs represent full state tomography which used to evaluate the VQF of CV beams.

Please indicate whether<br>this abstract may be<br>published online<br>(Yes / No)

yes

Apply to be<br> considered for a student <br> &nbsp; award (Yes / No)?

yes

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?

No

Main supervisor (name and email)<br>and his / her institution

Prof. Andrew Forbes
Andrew.forbes@wits.ac.za
University of The Witwatersrand

Primary author

Ms Hend SROOR (University of The Witwatersrand)

Co-authors

Prof. Andrew Forbes (University of The Witwatersrand) Mr Bienvenu Ndagano (University of the Witwatersrand) Dr Carmelo Rosales-Guzman (University of The Witwatersrand) Dr Melanie McLaren (University of The Witwatersrand)

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