Ngcobo, SandileAit-Ameur, KForbes, A2012-11-022012-11-022012-08Ngcobo, S, Ait-Ameur, K and Forbes, A. Intra-cavity generation of high order LGpl modes. IONS-Africa 1, Bergville, 31 August - 2 September 2012http://hdl.handle.net/10204/6283IONS-Africa 1, Bergville, 31 August - 2 September 2012This 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 Gaussian beam and force the laser to operate on a higher order LGpl 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.enDiffractive optical elementLaguerre Gaussian beamBeam shapingConference PresentationNgcobo, S., Ait-Ameur, K., & Forbes, A. (2012). Intra-cavity generation of high order LGpl modes. http://hdl.handle.net/10204/6283Ngcobo, Sandile, K Ait-Ameur, and A Forbes. "Intra-cavity generation of high order LGpl modes." (2012): http://hdl.handle.net/10204/6283Ngcobo S, Ait-Ameur K, Forbes A, Intra-cavity generation of high order LGpl modes; 2012. http://hdl.handle.net/10204/6283 .TY - Conference Presentation AU - Ngcobo, Sandile AU - Ait-Ameur, K AU - Forbes, A AB - 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 Gaussian beam and force the laser to operate on a higher order LGpl 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. DA - 2012-08 DB - ResearchSpace DP - CSIR KW - Diffractive optical element KW - Laguerre Gaussian beam KW - Beam shaping LK - https://researchspace.csir.co.za PY - 2012 T1 - Intra-cavity generation of high order LGpl modes TI - Intra-cavity generation of high order LGpl modes UR - http://hdl.handle.net/10204/6283 ER -