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Partially coherent vortex beams
Complex Light and Optical Forces XII, 2018Beams with structured phase and beams with partial spatial coherence have both been considered for a variety of applications for many years, and it would seem natural to combine their advantageous properties. However, there is a conceptual difficulty in doing so because partially coherent beams lack a definite phase, which would seem to rule out a ...
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Propagation of partially polarized, partially coherent beams
Journal of Optics A: Pure and Applied Optics, 2008The propagation of partially polarized and partially coherent beams in free space is investigated. Using the partially polarized Gaussian Schell model beam as an example, closed-form propagation expressions are derived for the intensity distribution and the degree of polarization of the beam.
Yunli Qiu +3 more
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Coherent and partially coherent vortex beams in turbulence
Frontiers in Optics 2007/Laser Science XXIII/Organic Materials and Devices for Displays and Energy Conversion, 2007The evolution of the scintillation and topological charge of coherent and partially coherent vortex beams in turbulence is analyzed. The possibility of using such beams in optical communications is discussed.
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Generalized partially coherent beams with nonseparable phases
Optics Letters, 2019A new, to the best of our knowledge, family of partially coherent beams incorporating a set of nonseparable phases is introduced. Due to the nonnegative definiteness of the cross-spectral density function, these phases cannot survive in the limit of full coherence, which distinguishes them from conventional phase terms. An example of a nonuniform model
Lipeng, Wan, Daomu, Zhao
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Vortex array embedded in a partially coherent beam
Optics Letters, 2015Method of generating a vortex array embedded in a partially coherent beam is proposed and experimentally demonstrated. The vortex array exists in the complex coherence function of a random field arising due to interference of three independent coherence functions with appropriate phase profiles.
Rakesh Kumar, Singh +2 more
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Partially coherent vortex beams with a separable phase
Optics Letters, 2003We propose and experimentally implement a method for the generation of a wide class of partially spatially coherent vortex beams whose cross-spectral density has a separable functional form in polar coordinates. We study phase singularities of the spectral degree of coherence of the new beams.
Galina V, Bogatyryova +5 more
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Statistics of partially coherent beams: a numerical analysis
Journal of the Optical Society of America A, 2004We show that by using Monte Carlo simulations, one can study the characteristics of beams with adjustable spatial coherence properties that propagate through highly scattering media. Moreover, we show that a single simulation is sufficient to obtain the intensity distribution at the exit surface of the scattering medium for any degree of global ...
Mujat, Claudia, Dogariu, Aristide
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Synthesis of structured partially spatially coherent beams
Optics Letters, 2011We report on the generation and rapid characterization of structured beams of arbitrary spatial coherence. An experimental setup is introduced capable of generating partially coherent fields by incoherently superposing fully coherent fields. The characterization is performed using the spectral information in the interferogram produced when using a two ...
C, Macías-Romero +3 more
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Effect of dispersion on the spectrum of partially coherent beams
Journal of the Optical Society of America A, 2008Taking the Gaussian Schell-model (GSM) beam as a typical example of partially coherent beams, the analytical expressions of the spectrum of GSM beams propagating in dispersive media are derived, and the spectral properties are studied in detail. It is shown that, in comparison with propagation in free space and in turbulence, whether or not GSM beams ...
Liuzhan, Pan +3 more
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Spreading of partially coherent beams in random media
Journal of the Optical Society of America A, 2002Some published computational work has suggested that partially coherent beams may be less susceptible to distortions caused by propagation through random media than fully coherent beams. In this paper this suggestion is studied quantitatively by examining the mean squared width of partially coherent beams in such media as a function of the propagation ...
Greg, Gbur, Emil, Wolf
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