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Browsing by Author "Duparré, M"

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  • Schulze, C; Flamm, D; Duparré, M; Forbes, A (Optical Society of America, 2012-11)
    We present a fast and easy technique for measuring the beam propagation ratio, M2, of laser beams using a spatial light modulator. Our technique is based on digitally simulating the free-space propagation of light, thus ...
  • Dudley, Angela L; Schulze, C; Roux, FS; Duparré, M; Forbes, A (2013-06)
    In this work we present a mechanism for generating superpositions of non-canonical, higherorder Bessel beams, which are characterized by the anisotropy of the optical vortex on the propagation axis, known as the morphology ...
  • Schulze, C; Dudley, Angela L; Brüning, R; Duparré, M; Forbes, A (Optical Society of America, 2014-09)
    We present the measurement of the orbital angular momentum (OAM) density of Bessel beams and superpositions thereof by projection into a Laguerre–Gaussian basis. This projection is performed by an all-optical inner product ...
  • Flamm, D; Naidoo, Darryl; Schulze, C; Forbes, A; Duparré, M (Optical Society of America, 2012-07)
    A procedure for the real-time analysis of laser modes using a phase-only spatial light modulator is outlined. The procedure involves encoding into digital holograms by complex amplitude modulation a set of orthonormal basis ...
  • Dudley, Angela L; Schulze, C; Litvin, I; Duparré, M; Forbes, A (SPIE Proceedings, 2013-08)
    Although many techniques are efficient at measuring optical orbital angular momentum (OAM), they do not allow one to obtain a quantitative measurement for the OAM density across an optical field and instead only measure ...
  • Schulze, C; Dudley, Angela L; Flamm, D; Duparré, M; Forbes, A (Optical Society of America, 2013-07)
    We present the reconstruction of a laser beam wavefront from its mode spectrum and investigate in detail the impact of distinct aberrations on the mode composition. The measurement principle is presented on a Gaussian beam ...