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Browsing by Author "Dudley, A"

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  • 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 ...
  • Schulze, C; Dudley, Angela L; Flamm, D; Duparre, M; Forbes, A (IOP Publishing, 2013-07)
    We demonstrate a versatile method for the measurement of the orbital angular momentum (OAM) density of an optical field. By performing a modal decomposition with digital holograms, we reconstruct the full optical field ...
  • Dudley, Angela L; Milione, G; Alfano, R; Forbes, A (CSIR, 2014-07)
    The presentation focuses on how horizontal and vertical components of a field can be extracted via Stokes polarimetry
  • Dudley, Angela L; Litvin, I; Forbes, A (SPIE, 2012-01)
    To measure the Orbital Angular Momentum (OAM) density of superposition fields two steps are needed: generation and measurement. An azimuthally-varying phase (bounded by a ring-slit) placed in the spatial frequency domain ...
  • Milione, G; Dudley, Angela L; Nguyen, TA; Chakraborty, O; Karimi, E; Forbes, A; Alfano, RR (IOP Publishing, 2015-02)
    We experimentally measured the self-healing of the spatially inhomogeneous states of polarization of vector Bessel beams. Radially and azimuthally polarized vector Bessel beams were experimentally generated via a digital ...
  • Milione, G; Dudley, Angela L; Nguyen, TA; Chakraborty, O; Karimi, E; Forbes, A; Alfano, R (IOP Publishing, 2015-02)
    We experimentally measured the self-healing of the spatially inhomogeneous states of polarization of vector Bessel beams. Radially and azimuthally polarized vector Bessel beams were experimentally generated via a digital ...
  • Dudley, Angela L; Nock, M; Konrad, T; Roux, FS; Forbes, A (Optical Society of America, 2010-10)
    An amplitude damping channel for Laguerre-Gaussian (LG) modes is presented. Experimentally the action of the channel on LG modes is in good agreement with that predicted theoretically.
  • Schulze, C; Flamm, D; Dudley, Angela L; Forbes, A; Duparr'e, M (SPIE Digital library, 2013-02)
    We present a novel technique to measure the orbital angular momentum (OAM) density of light. The technique is based on modal decomposition, enabling the complete reconstruction of optical fields, including the reconstruction ...
  • Litvin, IA; Dudley, Angela L; Forbes, A (Optical Society of America, 2011-08)
    The authors study theoretically the orbital angular momentum (OAM) density in arbitrary scalar optical fields, and outline a simple approach using only a spatial light modulator to measure this density. They demonstrate ...
  • Dudley, Angela L; Rop, R; Litvin, IA; Lopez-Mariscal, C; Roux, FS; Forbes, A (SPIE, 2012-08)
    We experimentally generated superpositions of higher-order Bessel beams that possess no global orbital angular momentum (OAM), yet exhibit an angular rotation in their intensity profile as the field propagates. The digital ...
  • Dudley, Angela L; Litvin, IA; Forbes, A (Optical Society of America, 2012-03)
    In this work we derive expressions for the orbital angular momentum (OAM) density of light, for both symmetric and nonsymmetric optical fields, that allow a direct comparison between theory and experiment. We present a ...
  • 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 ...
  • Giovannini, D; Romero, J; Leach, J; Dudley, Angela L; Forbes, A; Padgett, MJ (Optical Society of America, 2013-06)
    Efficient quantum state reconstruction of a high-dimensional multi-partite quantum system can be performed by considering mutually unbiased measurements of the individual parts. We illustrate this approach experimentally ...
  • 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 ...
  • Lavery, MPJ; Dudley, Angela L; Forbes, A; Courtial, J; Padgett, MJ (Institute of Physics, 2011-09)
    The authors have developed an interferometer requiring only minimal angular alignment for the routing of beams carrying orbital angular momentum. The Mach–Zehnder interferometer contains a Dove prism in each arm where each ...
  • Schulze, C; Dudley, Angela L; Flamm, D; Duparr, M; Forbes, A (The Optical Society of America, 2013-10)
    We present a novel tool for sorting the orbital angular momentum and to determine the orbital angular momentum density of laser beams, which is based on the use of correlation filters.
  • Dudley, Angela L; Vasilyeu, R; Forbes, A; Khilo, N; Ropot, P; Belyi, V; Kazak, N (Society of Photo-Optical Instrumentation Engineers (SPIE), 2009-08)
    This paper presents a mechanism for the generation of the superposition of higher-order Bessel beams, which implements a ring slit aperture and spatial light modulator (SLM). The experimental technique is also adapted to ...
  • Dudley, Angela L; Vasilyeu, R; Forbes, A; Khilo, N; Ropot, P (2009-07)
    This poster presents a mechanism for the generation of the superposition of higher-order Bessel beams, which implements a ring slit aperture and spatial light modulator (SLM). The experimental technique is also adapted to ...
  • Dudley, Angela L (2012-01)
    The work presented in this thesis is centred on the generation of superimposed optical fields which each carry orbital angular momentum (OAM) and the development of OAM measurement techniques. Optical fields which carry ...
  • Dudley, Angela L; Majola, N; Chetty, N; Forbes, A (SPIE, 2014-09-25)
    In this work we construct coherent superpositions of Gaussian and vortex modes which can be described to occupy the complex-plane. We demonstrate how these fields can be experimentally constructed in a digital, controllable ...