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Browsing by Author "Aït-Ameur, K"

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  • Naidoo, Darryl; Forbes, A; Aït-Ameur, K; Fromager, M (SPIE, 2011-01)
    A method of decomposing a dual-directional laser beam into a forward propagating field and a backward propagating field for an apertured plano-concave cavity is presented. An intra-cavity aperture is a simple method of ...
  • Naidoo, Darryl; Aït-Ameur, K; Brunel, M; Forbes, A (Springer Verlag, 2012)
    In this paper we demonstrate experimentally the intra-cavity generation of a coherent superposition of Laguerre–Gaussian modes of zero radial order but opposite azimuthal order. The superposition is created with a simple ...
  • Naidoo, Darryl; Aït-Ameur, K; Forbes, A (SPIE, 2011-08)
    In this paper the authors explore vortex beams and in particular the generation of single LG0l modes and superpositions thereof. Vortex beams carry orbital angular momentum (OAM) and this intrinsic property makes them ...
  • Boubaha, B; Naidoo, Darryl; Godin, T; Fromager, M; Forbes, A; Aït-Ameur, K (Optical Society of America, 2013-08)
    In this paper, we explore theoretically and experimentally the laser beam shaping ability resulting from the coaxial superposition of two coherent Gaussian beams (GBs). This technique is classified under interferometric ...
  • Naidoo, Darryl; Godin, T; Fromager, M; Aït-Ameur, K; Forbes, A (SPIE Proceedings, 2014-02)
    We explore an interferometric beam shaping technique that considers the coaxial superposition of two Gaussian beams. This technique is traditionally implemented in a Mach-Zehnder interferometer; however, to avoid phase ...
  • Godin, T; Ngcobo, S; Cagniot, E; Fromager, M; Forbes, A; Aït-Ameur, K (SPIE, 2011-08)
    Many applications of lasers seek nowadays for focal spots whose corresponding volume is getting smaller and smaller in order to ensure high spatial resolution. This problem, studied by many research groups around the world, ...
  • Godin, T; Forbes, A; Naidoo, Darryl; Fromager, M; Cagniot, E; Aït-Ameur, K (Elsevier, 2011-06)
    The concept of transverse correlation vanishing, between the fraction of power contained in the centre and wings of a probe beam, recently introduced [Opt. Commun. 282 (2009) 3854–3858] is important to be considered when ...
  • Naidoo, Darryl; Godin, T; Fromager, M; Cagniot, E; Passilly, N; Forbes, A; Aït-Ameur, K (Elsevier, 2011-11)
    The article outlines an approach to mode selection in a microchip laser through judicious shaping of the pump light to create a high modal overlap with the desired mode. The authors demonstrate the principle by creating a ...