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Optical guiding of micron-sized particles is shown using both Gaussian and zeroth-order Bessel light beams. Axial and transverse forces for guiding in both beams are calculated. Experiments show that the Bessel beam allows for extended guiding distances compared to a Gaussian beam, at the expense of guiding velocity.
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A. E. Carruthers, Svetlana A. Tatarkova, V. Garces-Chavez, K. Volke-Sepulveda, Sabino Chavez-Cerda, Kishan Dholakia, "Optical guiding using Gaussian and Bessel light beams," Proc. SPIE 5121, Laser Processing of Advanced Materials and Laser Microtechnologies, (2 September 2003); https://doi.org/10.1117/12.513814