Abstract content <br> (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>
We investigate a novel approach to characterise an optical field employing a Wigner distribution function with a modal decomposition technique. Optical fields are typically characterised through their phase, beam size, far field beam divergence, beam quality and constituent modal components where a variety of measurement techniques are required to obtain the above parameters. These techniques include a modal decomposition that uses a superposition of orthogonal functions to determine constituent modal components and a knife-edge method to determine beam size by the use of a scanning slit and a detector. The use of the Wigner distribution function together with the modal decomposition is an approach to optimally obtain the various beam parameters in a single set of measurements. We demonstrate a mathematical representation of the approach and highlight the experimental procedure in modal characterisation.
Main supervisor (name and email)<br>and his / her institution
Darryl Naidoo, firstname.lastname@example.org, CSIR, National laser centre.
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