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Amplitude damping of Laguerre-Gaussian modes - Journal Article

Author: Dudley, Angela L ; Nock, M ; Konrad, T ; Roux, FS ; Forbes, A Date: Oct 2010 In this article, the authors present an amplitude damping channel for Laguerre-Gaussian modes. The channel is tested experimentally for a Laguerre-Gaussian mode, having an azimuthal index l = 1, illustrating that it decays to a Gaussian mode ... Read more
Effective and efficient method of calculating Bessel beam fields

Author: Litvin, IA ; Forbes, A Date: 2005 Bessel beams have gathered much interest of late due to their properties of near diffraction free propagation and self reconstruction after obstacles. Such laser beams have already found applications in fields such as optical tweezers and ... Read more
Impact of phase errors at the conjugate step on the propagation of intensity and phase shaped laser beams

Author: Litvin, IA ; Forbes, A Date: 2007 The authors investigate the phase conjugating element of a two element Fourier transform beam shaping scheme and the impact this element has on the resulting propagation. It is shown that there are stricter limitations placed on the system ... Read more
Laser beam shaping limitations for laboratory simulation of turbulence using a phase-only spatial light modulator

Author: Litvin, IA ; Burger, L ; De Gama, MP ; Mathye, A ; Forbes, A Date: Sep 2007 Recent approaches to demonstrating adaptive optics and atmospheric turbulence have made use of spatial light modulators (SLMs) as the active phase element. However, there are limitations in using SLMs as an accurate method of simulating ... Read more
Transverse correlation vanishing due to phase aberrations

Author: Godin, T ; Forbes, A ; Naidoo, Darryl ; Fromager, M ; Cagniot, E ; Aït-Ameur, K Date: Jun 2011 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 measuring the effective ... Read more
White light wavefront control with a spatial light modulator

Author: Spangenberg, D-M ; Dudley, Angela L ; Neethling, PH ; Rohwer, EG ; Forbes, A Date: 2014 Spatial light modulators are ubiquitous tools for wavefront control and laser beam shaping but have traditionally been used with monochromatic sources due to the inherent wavelength dependence of the calibration process and subsequent phase ... Read more

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Browsing by Subject "Diffraction"

Browsing by Subject "Diffraction"

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