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Evolution of optical vortex distributions in stochastic vortex fields

Author: Roux, FS Date: Jan 2011 Stochastic vortex fields are found in laser speckle, in scintillated beams propagating through a turbulent atmosphere, in images of holograms produced by Iterative Fourier Transform methods and in the beams produced by certain diffractive ... Read more
Generating and analyzing non-diffracting vector vortex beams

Author: Li, Y ; Dudley, Angela L ; Mhlanga, T ; Escutia, MJ ; Forbes, A Date: Aug 2013 We experimentally generate non-diffracting vector vortex beams by using a Spatial Light Modulator (SLM) and an azimuthal birefringent plate (q-plate). The SLM generates scalar Bessel beams and the q-plate converts them to vector vortex beams. ... Read more
Generation and propagation of high-order Bessel vortices in linear and non-linear crystals

Author: Belyi, VN ; Khilo, NA ; Forbes, A ; Ryzhevich, AA Date: Aug 2009 Linear and nonlinear processes of transferring optical singularities from anisotropic crystals onto the wavefront of Bessel light beams (BLBs) are investigated. The generation of high-order vortices at the propagation of BLBs along the optical ... Read more
Lateral diffusion of the topological charge density in stochastic optical fields

Author: Roux, FS Date: 2010 Stochastic (i.e. random and quasi-random) optical fields may contain distributions of optical vortices that are represented by non-uniform topological charge densities. Numerical simulations are used to investigate the evolution under free-space ... Read more
Lateral phase drift of the topological charge density in stochastic optical fields

Author: Roux, FS Date: Mar 2012 The statistical distributions of optical vortices or topological charge in stochastic optical fields can be inhomogeneous in both transverse directions. Such two-dimensional inhomogeneous vortex or topological charge distributions evolve in ... Read more
Measuring the self-healing of the spatially inhomogeneous states of polarization of vector Bessel beams

Author: Milione, G ; Dudley, Angela L ; Nguyen, TA ; Chakraborty, O ; Karimi, E ; Forbes, A ; Alfano, R Date: Feb 2015 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 version of Durnin's ... Read more

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Browsing by Subject "Optical vortex"

Browsing by Subject "Optical vortex"

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