Spreading of partially coherent beams in random media.
This suggestion that partially coherent beams may be less susceptible to distortions caused by propagation through random media than fully coherent beams is studied quantitatively by examining the mean squared width of partially incoherent beams in such media as a function of the propagation distance.
The structure of partially coherent fields
Diffraction tomography without phase information.
A modified form of diffraction tomography is presented in which measurements of the phase of the scattered field are replaced with measurements of the intensity on two planes beyond the scatterer.…
Vortex beam propagation through atmospheric turbulence and topological charge conservation.
The propagation of vortex beams through weak-to-strong atmospheric turbulence is simulated and analyzed. It is demonstrated that the topological charge of such a beam is a robust quantity that could…
Coherence vortices in partially coherent beams
It is demonstrated that the spectral degree of coherence of a partially coherent beam may possess isolated pairs of points at which its phase is singular, and that in the neighborhood of these points…
Fractional vortex Hilbert's Hotel
- G. Gbur
- 23 November 2015
We demonstrate how the unusual mathematics of transfinite numbers, in particular a nearly perfect realization of Hilbert's famous hotel paradox, manifests in the propagation of light through…
Hybrid diffraction tomography without phase information.
A hybrid tomographic method is introduced, based on recent investigations concerning the connection between computed tomography and diffraction tomography, that allows direct reconstruction of scattering objects from intensity measurements, that is intuitively easier to understand and easier to implement than some other methods described in the literature.
Plasmon-assisted two-slit transmission: Young's experiment revisited.
The total intensity of the far-field double-slit pattern is shown to be reduced or enhanced as a function of the wavelength of the incident light beam, attributed to an interference phenomenon at each of the slits, instead of at the detector.
Phase singularities of the coherence functions in Young's interference pattern.
To the knowledge, this is the first illustration of the singular behavior of the spectral degree of coherence, and the results extend the field of singular optics to the study of phase singularities of correlation functions.
Anomalous behavior of spectra near phase singularities of focused waves.
It is shown that remarkable spectral changes take place in the neighborhood of phase singularities near the focus of a converging, spatially fully coherent polychromatic wave diffracted at an…