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Observation of the angular momentum transfer in the Mie regime using Mathieu beams

We observe the orbital motion of particles in the Mie regime as they are trapped within the multiringed transverse field of a rotating Helical Mathieu light beam. The observed motion results as angular momentum is transferred to the particles from the orbital component of this novel light beam. Mathieu Beams present nondiffracting features within a limited distace are suitable for a variety of applications in optical manipulation where guiding and rotation of particles is required. Dynamic variables of the motion of the particles such as angular velocity and acceleration are measured and compared to the theoretical predictions from numerical simulation.