We show that by spatially arranging topological charges on a phase mask, it is possible to shape the spatial intensity profile of vortex beams in a controlled manner. As proof-of-principle experiments, we generated vortex beams with the spatial shape of straight lines, corners, and triangles. Potential applications for shaped beams include selective excitation of plasmonic modes, geometrically tunable Bose–Einstein condensates, and optical tweezers.
© 2013 Optical Society of America
Original Manuscript: February 20, 2013
Revised Manuscript: April 2, 2013
Manuscript Accepted: April 5, 2013
Published: May 1, 2013
Anderson M. Amaral, Edilson L. Falcão-Filho, and Cid B. de Araújo, "Shaping optical beams with topological charge," Opt. Lett. 38, 1579-1581 (2013)