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Browsing by Subject "Gaussian beam"

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Bessel-like beams with z-dependent cone angles

Author: Belyi, VN ; Forbes, A ; Kazak, NS ; Khilo, NA ; Ropot, PI Date: Aug 2009 A new type of Bessel-like optical beams, which is distinguished by the dependence on the cone angle from the longitudinal coordinate, is investigated. Such beams have the properties of Bessel beams (ring-spatial spatial spectrum) as well as ... Read more
Deconstructing quantum decoherence in atmospheric turbulence

Author: Roux, FS Date: Jun 2012 This report present the presentation on deconstructing quantum decoherence in atmospheric turbulence. The focus was on the classical and quantum scintillation, time vs propagation distance, current paradigm: Paterson model, infinitesimal ... Read more
Gaussian mode selection with intracavity diffractive optics

Author: Litvin, IA ; Forbes, A Date: Oct 2009 The authors outline a resonator design that allows for the selection of a Gaussian mode by diffractive optical elements. This is made possible by the metamorphosis of a Gaussian beam into a flat-top beam during propagation from one end of the ... Read more
Implementing digital holograms to create and measure complex-plane optical fields

Author: Dudley, Angela L ; Majola, N ; Chetty, N ; Forbes, A Date: Feb 2016 The coherent superposition of a Gaussian beam with an optical vortex can be mathematically described to occupy the complex plane. The authors provide a simple analogy between the mathematics, in the form of the complex plane, and the visual ... Read more
Near infrared femtosecond laser-induced bacterial inactivation

Author: Maphanga, Charles P ; Manoto, Sello L ; Ombinda-Lemboumba, Saturnin ; Osualale, O ; Mthunzi-Kufa, Patience Date: Mar 2019 The use of light to inactivate microbes as an alternative method to the traditional methods of controlling microorganisms continues to draw the attention of researchers. Traditional methods of sterilization and/or pasteurization using chemicals ... Read more
Optical trapping and tweezing using a spatial light modulator

Author: Ismail, Y ; Mclaren, MG ; Forbes, A Date: Jul 2009 This presentation provides information on optical trapping and tweezing using a spatial light modulator. Read more
Random wave fields and scintillated beams

Author: Roux, FS Date: 2009 This report present the presentation on random wave fields and scintillated beams. Read more
Reconstruction of laser beam wavefronts based on mode analysis

Author: Schulze, C ; Dudley, Angela L ; Flamm, D ; Duparré, M ; Forbes, A Date: Jul 2013 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 that is intentionally ... Read more
Statistical behaviour of optical vortex fields

Author: Roux, FS Date: Sep 2009 The report present the presentation on statistical behaviour of optical vortex fields. Read more
Vortices in Gaussian beams

Author: Roux, FS Date: 2009 The report present the presentation on vortices in Gaussian beams. The presentation was on the polynomial Gaussian beam, Calculation techniques and general properties of polynomial Gaussian beam, Single vortex beams and Gaussian beams with ... Read more

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Browsing by Subject "Gaussian beam"

Browsing by Subject "Gaussian beam"

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