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Multiplexed vortex beam-based optical tweezers generated with spiral phase mask.

ABSTRACT: The design and implementation of a multiplexed spiral phase mask in an experimental optical tweezers setup are presented. This diffractive optical element allows the generation of multiple concentric vortex beams with independent topological charges and without amplitude modulation. The generalization of the phase mask for multiple concentric vortices is also shown. The design for a phase mask of two multiplexed vortices with different topological charges is developed. We experimentally show the transfer of angular momentum to the optically trapped microparticles by enabling nearly independent orbiting dynamics around the optical axis within each vortex. The angular velocity of the confined particles versus the optical power in the focal region is also discussed for different combinations of topological charges.

SUBMITTER: Munoz-Perez FM

PROVIDER: S-EPMC10582355 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature

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Multiplexed vortex beam-based optical tweezers generated with spiral phase mask.

Muñoz-Pérez Francisco M FM Ferrando Vicente V Furlan Walter D WD Castro-Palacio Juan C JC Arias-Gonzalez J Ricardo JR Monsoriu Juan A JA

iScience 20230922 10

The design and implementation of a multiplexed spiral phase mask in an experimental optical tweezers setup are presented. This diffractive optical element allows the generation of multiple concentric vortex beams with independent topological charges and without amplitude modulation. The generalization of the phase mask for multiple concentric vortices is also shown. The design for a phase mask of two multiplexed vortices with different topological charges is developed. We experimentally show the ...[more]

PMID: 37860775

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