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Conference on Lasers and Electro-Optics
. at Electrical and Computer Engineering, Univ. of Toronto, Canada; 2 School of Physics, Univ. of the Witwatersrand, South Africa. ... We engineer quasi 3D structured light fields in which the orbital angular momentum changes locally in both sign and magnitude along the beam's axis and explain how such transitions occur without violating ... A modal decomposition process confirms high purity of the generated beams at.980-nm wavelength. ...doi:10.1364/cleo_at.2019.jth5c.4 fatcat:ytixbvycv5e7tlcr5m74negtlu