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In this manuscript, we demonstrate the ability of nonlinear light-atominteractions to produce tunably non-Gaussian, partially self-healing opticalmodes. Gaussian spatial-mode light tuned near to the atomic resonances in hotrubidium vapor is shown to result in non-Gaussian output mode structures thatmay be controlled by varying either the input beam power or the temperature ofthe atomic vapor. We show that the output modes exhibit a degree ofself-reconstruction after encountering an obstruction in the beam path. Theresultant modes are similar to truncated Bessel-Gauss modes that exhibit theability to self-reconstruct earlier upon propagation than Gaussian modes. Theability to generate tunable, self-reconstructing beams has potentialapplications to a variety of imaging and communication scenarios.

Atomic vapor as a source of tunable, non-Gaussian self-reconstructing optical modes