Speaker
Mr
Nyiku Mahonisi
(University of Witwatersrand)
Description
The computer-controlled shaping of light beams using digital holography has triggered the applications of these to a great variety of fields. Technological advances had provided with devices capable not only to generate almost any beam shape but also to multiplex multiple beams simultaneously. This property has provided a new tool to explore novel fields. The idea behind multiplexing is to encode each beam with a unique carrier frequency that in the Fourier plane translates into beams positioned at different locations. Hence, by controlling the carrier frequency of each beam it is possible to selectively send beams to specific locations. In this work we first study, via a correlation function of the experimentally generated beam against its theoretical counterpart, the maximum number of beams that can be multiplexed. We then show how this principle can be applied to generate multiple beams arrayed in well-defined symmetrical positions. Ultimately, this technique will allow us to selectively excite certain regions with fabricated Nitrogen vacancy (NV) centers on a diamond sample towards the generation of novel SPDC crystals of great relevance in the generation of single photons for secure communication channels.
Apply to be<br> considered for a student <br> award (Yes / No)?
Yes
Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?
No
Level for award<br> (Hons, MSc, <br> PhD, N/A)?
MSc
Main supervisor (name and email)<br>and his / her institution
Prof. Andrew Forbes, andrew.forbes@wits.ac.za, University of Witwatersrand & Prof. SR Naidoo, mervin.naidoo@wits.ac.za, University of Witwatersrand
Primary authors
Prof.
Andrew Forbes
(CSIR)
Dr
Carmelo Rosales-Guzman
(University of the Witwatersrand, Johannesburg)
Mr
NKOSIPHILE ANDILE BHEBHE
(UNIVERSITY OF THE WITWATERSRAND)
Mr
Nyiku Mahonisi
(University of Witwatersrand)
Prof.
Shunmugam Ramsamy Naidoo
(Wits University)
