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dc.contributor.author Ngcobo, S
dc.contributor.author Ait-Ameur, K
dc.contributor.author Forbes, A
dc.date.accessioned 2012-11-02T07:31:49Z
dc.date.available 2012-11-02T07:31:49Z
dc.date.issued 2012-07
dc.identifier.citation Ngcobo, S, Ait-Ameur, K and Forbes, A. Generation of high order modes. 57th Annual Conference of the South African Institute of Physics, Pretoria, 9-13 July 2012 en_US
dc.identifier.uri http://hdl.handle.net/10204/6276
dc.description 57th Annual Conference of the South African Institute of Physics, Pretoria, 9-13 July 2012 en_US
dc.description.abstract This work deals with the generation of symmetrical high order Laguerre Gaussian modes. These high order Laguerre-Gaussian beams are generated by forcing the laser using an annular binary Diffractive Optical Element whose geometry is in connection with the location of the Laguerre polynomial zeros. The Diffractive optical element is used to shape the TEM00 Gassian beam and force the laser to operate on a higher order TEMp0 Laguerre-Gaussian modes or high order superposition of Laguerre-Gaussian modes. In this presentation we will show some different methods that we have employed for generating these high order Laguerre Gaussian modes using annular binary Diffractive Optical Elements of multi rings and single ring method. The characterization of these high order Laguerre Gaussian modes using Fourier Transformation, Modal Decomposition Method and Beam quality factor M2 measurements will show that they are of high purity. en_US
dc.language.iso en en_US
dc.relation.ispartofseries Workflow;9673
dc.subject Diffractive optical element en_US
dc.subject Laguerre Gaussian beams en_US
dc.subject Beam shaping en_US
dc.title Generation of high order modes en_US
dc.type Presentation en_US


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