Buscar
Mostrando ítems 1-10 de 214
Comparisons between singularities of pseudophase and speckle phase using binary diffusers in optical vortex metrology
(Society of Photo-Optical Instrumentation Engineers, 2016-12)
An analysis based on the comparison between singularities of speckle phase and pseudophase in the practice of optical vortex metrology is carried out by measuring the phase map of the speckle pattern obtained from the ...
Novel vortex-transform for high frequency modulated patterns
(Optical Society of America, 2013-10)
A novel vortex-transform is proposed. This transform allows for generating complex-valued functions from modulated intensity patterns, including high frequency components from modulation, without the generation of unstable ...
Generation of optical singular regions and analysis of its physical properties
(Instituto Nacional de Astrofísica, Óptica y Electrónica, 2015)
Generation of optical singular regions and analysis of its physical properties
(Instituto Nacional de Astrofísica, Óptica y Electrónica, 2015)
Optical vortex induction via light-matter interaction in liquid-crystal media
(Optical Soc Amer., 2015)
Optical vortices are attracting much attention because of their applications in various fields of optical processing, communications, enhanced imaging systems, and bio-inspired devices. Different methods to generate optical ...
Dynamic tracking with simultaneous edge enhancement
(Elsevier Gmbh, 2017-11)
Due to the isotropic edge enhancement, the vortex phase filters are of commonly used in spatial filtering. In general, these filters employ a spiral phase mask on the Fourier plane, the square modulo from this convolution ...
Formulation of the twisted-light–matter interaction at the phase singularity: The twisted-light gauge
(American Physical Society, 2015-03)
Twisted light is light carrying orbital angular momentum. The profile of such a beam is a ring-like structure with a node at the beam axis, where a phase singularity exists. Due to the strong spatial inhomogeneity the ...
Transverse optical phenomena with Gaussian beams and optical vortices
(Universidade Federal de PernambucoUFPEBrasilPrograma de Pos Graduacao em Fisica, 2017)