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Measuring the topological charge of vortex beams by using an annular ellipse aperture
Measuring the topological charge vortex beams an annular ellipse aperture
2013/7/3
We theoretically and experimentally investigate the Fraunhofer diffraction pattern of a vortex beam passing through an annular ellipse aperture. It is found that the pat-tern of the far-field diffract...
Measuring the Topological Charge of Integer and Fraction Vortices Using Multipoint Plates
vortex beams multipoint plates interference
2013/7/3
The topological charge of integral vortex beams with a single circle of multipoints has previously been measured. In this work, we theoretically and experimental study the diffraction patterns of vort...