77 citations · 153 across the 8 of their papers we have counts for
8 papers · 1 filter
Multi-twist optical Mobius strips
Isaac Freund
Circularly polarized Gauss-Laguerre GL(0,0) and GL(0,1) laser beams that cross at their waists at a small angle are shown to generate a quasi-paraxial field that contains an axial…
Optical M0bius Strips in Three Dimensional Ellipse Fields: Lines of Linear Polarization
Isaac Freund
The minor axes of, and the normals to, the polarization ellipses that surround singular lines of linear polarization in three dimensional optical ellipse fields are shown to be org…
Optical Mobius Strips in Three Dimensional Ellipse Fields: Lines of Circular Polarization
Isaac Freund
The major and minor axes of the polarization ellipses that surround singular lines of circular polarization in three dimensional optical ellipse fields are shown to be organized in…
Optical Möbius Singularities
Isaac Freund
Möbius 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 topolog…
Singularities in Speckled Speckle: Screening
David A. Kessler, Isaac Freund
We study screening of optical singularities in random optical fields with two widely different length scales. We call the speckle patterns generated by such fields speckled speckle…
Singularities in Speckled Speckle: Statistics
Isaac Freund, David A. Kessler
Random optical fields with two widely different correlation lengths generate far field speckle spots that are themselves highly speckled. We call such patterns speckled speckle, an…
Singularities in Speckled Speckle
Isaac Freund, David A. Kessler
Speckle patterns produced by random optical fields with two (or more) widely different correlation lengths exhibit speckle spots that are themselves highly speckled. Using computer…
Short and Long Range Screening of Optical Singularities
David A. Kessler, Isaac Freund
Screening of topological charges (singularities) is discussed for paraxial optical fields with short and with long range correlations. For short range screening the charge variance…