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Optics Letters, Vol. 38, Issue 19, pp. 3941-3944 (2013).
E. Rueda, D. Muñetón, J. A. Gómez, and A. Lencina.
Grupo de Óptica y Fotónica, Instituto de Física, Universidad de Antioquia U de A, Calle 70 No. 52-21, Medellín, Colombia and
Centro de Investigaciones Ópticas (CONICET La Plata-CIC), P.O. Box 3, (1897) Gonnet, Argentina and
Grupo de Física Básica y Aplicada, Politécnico Colombiano Jaime Isaza Cadavid, Medellín, Colombia and
Departamento de Física, Facultad de Ciencias Exactas Universidad Nacional de La Plata, La Plata, Argentina
Abstract
In the present work, we propose a method to generate high-quality optical vortices with a reduced number of phase levels by using multilevel vortex-producing lenses (VPLs). The VPL is implemented in a liquid-crystal spatial light modulator with limited capacity to project phase levels. The proposed method significantly improves the quality of the optical vortex obtained by employing spiral phase plates with the same number of phase levels. Simulations and experimental results confirming the effectiveness of the method are presented.
© 2013 Optical Society of America
