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Singularity screening in generic optical fields
Optics Letters, 2015We revisit the widely studied subject of screening in optical fields by topological charges and show that screening does not depend on charge ordering. Instead, for an array of N charges, screening requires that the variance of the charge fluctuations be small compared to N.
Isaac, Freund +3 more
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SPIE Proceedings, 2013
The study of optical vortices in stochastic optical fields involves various quantities, including the vortex density and topological charge density, that are defined in terms of local expectation values of distributions of optical vortices. For stochastic optical fields that are inhomogeneous or not normally distributed, these local quantities often ...
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The study of optical vortices in stochastic optical fields involves various quantities, including the vortex density and topological charge density, that are defined in terms of local expectation values of distributions of optical vortices. For stochastic optical fields that are inhomogeneous or not normally distributed, these local quantities often ...
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Singular optical phenomena in nature
SPIE Proceedings, 2008Optical singularities serve as scientific landmarks in the topological landscape of light patterns. These curious features exhibit conservation properties and unique diffraction patterns that are finding increasing importance in many branches of modern optics.
Grover A. Swartzlander, Jr., Greg Gbur
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Polarization singularities in optical lattices
Optics Letters, 2004Polarization singularities are shown to be unavoidable features of three-dimensional optical lattices. These singularities take the form of lines of circular polarization, C lines, and lines of linear polarization, L lines. The polarization figures surrounding a C line (L line) rotate about the line with winding number +/-1/2 (+/-1).
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Singular optics in coherence theory
Frontiers in Optics 2004/Laser Science XXII/Diffractive Optics and Micro-Optics/Optical Fabrication and Testing, 2004Recent work has extended the field of singular optics by considering the phase singularities of two-point correlation functions. We describe some results from this work and how such ‘coherence singularities’ relate to the traditional coherent phase singularities.
Taco D. Visser, Greg Gbur
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2008
M bius strips with one, two, three, and four, half-twists are shown to be generic features of three-dimensional (nonparaxial) elliptically polarized light. The geometry and topology of these unusual singularities is described and the multitude of winding numbers that characterize their structures is enumerated; probabilities for the appearance of ...
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M bius strips with one, two, three, and four, half-twists are shown to be generic features of three-dimensional (nonparaxial) elliptically polarized light. The geometry and topology of these unusual singularities is described and the multitude of winding numbers that characterize their structures is enumerated; probabilities for the appearance of ...
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Applications of Correlation Singular Optics
2019Applications of coherent singular optics have developed mainly due to progress in nanotechnologies that focus on the problem of manipulation of nano-objects and control of their parameters. An opaque particle falling into the center of a scalar vortex is captured due to the difference in light pressure at the center and at the periphery of the vortex ...
Chen Zhebo +5 more
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Singular Optics: Singular Optics With Polychromatic Light
Optics and Photonics News, 2002G. Gbur, T.D. Visser, E. Wolf
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Fundamentals and developments in fluorescence-guided cancer surgery
Nature Reviews Clinical Oncology, 2021Friso Achterberg +2 more
exaly
Introduction to Linear Singular Optics
2009Propagation of coherent radiation through inhomogeneous media with random fluctuations of local optical characteristics results in the formation of an optical wave that is characterized by random temporal and spatial distributions of its parameters such as intensity, phase, and, in general cases, its state of polarization. The fields formed in this way
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