Abstract

The intensity distribution and the radiation force of the J0-correlated Schell-model (JSM) vortex beams focused by a lens are investigated. It is shown that the desired partially coherent vortex bottle beams in the focal region can be obtained by choosing appropriate values of the topological charge n and the correlation length σ. It is shown that such vortex bottle beam (n⩾1) has several advantages over the bottle beam (n=0). In addition, the degree of coherence is also shown to possess phase singularities.

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