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Orbital angular momentum of a high-order Bessel light beam

Research output: Contribution to journalArticle

Author(s)

K Volke-Sepulveda, V Garcés-Chávez, S Chávez-Cerda, J Arlt, Kishan Dholakia

School/Research organisations

Abstract

The orbital angular momentum density of Bessel beams is calculated explicitly within a rigorous vectorial treatment. This allows us to investigate some aspects that have not been analysed previously, such as the angular momentum content of azimuthally and radially polarized beams. Furthermore, we demonstrate experimentally the mechanical transfer of orbital angular momentum to trapped particles in optical tweezers using a high-order Bessel beam. We set transparent particles of known dimensions into rotation, where the sense of rotation can be reversed by changing the sign of the singularity. Quantitative results are obtained for rotation rates.

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Details

Original languageEnglish
Pages (from-to)S82-S89
Number of pages8
JournalJournal of Optics B: Quantum and Semiclassical Optics
Volume4
Issue number2
DOIs
Publication statusPublished - Apr 2002

    Research areas

  • orbital angular momentum density, Bessel light beams, optical tweezers, GAUSSIAN LASER MODES, POYNTING VECTOR, OPTICAL SPANNER, PARTICLES, SPIN

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