Analysis of Interference of Planar Vortex Beams

We present a simple method to measure the topological charges of optical vortices with multiple singularities. Using a cylindrical lens, a vortex beam can decay into a light field distribution with multiple separated dark holes, whose number just equals the topological charge of the input beam. This conclusion is then verified via experiments and numerical simulations of the propagation of vortex beams with multiple singularities. This method is also reliable to measure the topological charges of broadband vortex beams with different distributions of singularities, which does not resort to multiple beam interferometric experiments.

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Analysis of Interference of Planar Vortex Beams

Cited by 2 publications

References 0 publications

Laguerre-Gaussian mode purity of Gaussian vortex beams

Laguerre-Gaussian mode purity of Gaussian vortex beams

Measuring Topological Charges of Optical Vortices with Multi-Singularity Using a Cylindrical Lens

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