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Show simple item record Ngcobo, S Forbes, A Ait-Ameur, K Mhlanga, T 2012-11-02T07:52:00Z 2012-11-02T07:52:00Z 2012-07
dc.identifier.citation Ngcobo, S, Forbes, A, Ait-Ameur, K and Mhlanga, T. Superresolution beams. South African Institute of Physics 56th Annual Conference, Pretoria, July 2011 en_US
dc.description South African Institute of Physics 56th Annual Conference, Pretoria, July 2011 en_US
dc.description.abstract The transformation of a Gaussian beam into a symmetrical TEMp0 Laguerre Gaussian beam (LGB) intensity distribution which has transverse superresolution properties is very useful in improving the spatial resolution of optical imaging microscopes by making the central diffractive spot smaller than the Airy spot. The beam shaping is achieved by using an annular binary Diffractive Optical Element (DOE) whose geometry is in connection with the location of the Laguerre polynomial zeros. The DOE imposes positions of p zeros of intensity distributions on the Gaussian beam, resulting to a generation of TEMp0 beams where there are minimum losses. The LGBs are well-known family of exact orthogonal solutions of free-space paraxial wave equation in cylindrical coordinates. Theoretical and experimental results will be demonstration for higher order TEMp0 modes of LGBs. en_US
dc.language.iso en en_US
dc.relation.ispartofseries Workflow;9705
dc.subject Laser Beam Shaping en_US
dc.subject Laguerre Gaussian beams en_US
dc.subject Gaussian beams en_US
dc.title Superresolution beams en_US
dc.type Presentation en_US

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