Generation of optical vortices with diverse topological charge via angular momentum transfer

Lopez-Quintas, Ignacio, Holgado, Warein, Drevinskas, Rokas, Kazansky, Peter G., Sola, Íñigo J. and Alonso, Benjamín (2021) Generation of optical vortices with diverse topological charge via angular momentum transfer. In The European Conference on Lasers and Electro-Optics, CLEO/Europe 2021. OSA. 1 pp . (doi:10.1109/CLEO/Europe-EQEC52157.2021.9542654).

Abstract

Special light beams exhibiting a structured field and carrying orbital angular momentum (OAM) appear as interesting tools in different fields such as particle manipulation, telecommunications or in several areas of light-matter interaction, including materials processing and nonlinear optics, among others. A very interesting possibility of these special light beams is the coupling of spatially varying linear polarization fields ( i.e. radial or azimuthal) with spin and orbital angular momenta. Taking advantage of this interaction, we propose an in-line method to obtain collinear optical vortices exhibiting different topological charges. The proposed method can be applied to focused or collimated beams, being continuous wave or pulsed.

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