Abstract

An approach for the realization of three-dimensional laser manipulation of agglomerations of carbon nanoparticles behind non-transparent obstacles in the air is proposed and investigated. The approach is based on the use of circular Airy beams (CABs), which are structured laser beams with self-healing and autofocusing properties. The possibility to trap and guide both single and multiple microparticles in the case of a non-distorted CAB and a CAB distorted by an on-axis metal rod is demonstrated. We believe that these results open new possibilities for the control of trapped particles that are out of sight and hidden by different obstacles.

© 2021 Optical Society of America

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Supplementary Material (2)

NameDescription
» Visualization 1       Motion stages of an 8-µm airborne light-absorbing particle trapped using the non-distorted CAB with r0 = 500 µm, ω = 125 µm, and R = 2.5 mm.
» Visualization 2       Motion stages of two 7-µm and 9-µm airborne light-absorbing particles trapped using the CAB with r0 = 500 µm, ω = 125 µm, and R = 2.5 mm distorted by the metal rod.

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