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Proceedings Paper

On-demand vector holographic optical tweezers
Author(s): Nkosiphile Bhebhe; Peter A. C. Williams; Carmelo Rosales-Guzmán; Valeria Rodríguez-Fajardo; Andrew Forbes
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Paper Abstract

The invention of holographic optical tweezers (HOTs) revolutionized the field of optical tweezers by allowing the simultaneous manipulation of many particles using arrays of scalar beams. Here, we go one step further and produce arrays of digitally controlled Higher-Order Poincaré Sphere (HOPs) beams employing a simple set-up using a spatial light modulator (SLM). Our system enables the on-demand manipulation of each beam in the array to obtain any HOPs state. We demonstrated trapping and tweezing with customized arrays of HOPs beams comprising scalar and cylindrical vector beams simultaneously in the same array. Our approach is general enough to be easily extended to arbitrary vector beams, could be implemented with fast refresh rates, and will be of interest to the structured light and optical manipulation communities alike.

Paper Details

Date Published: 9 September 2019
PDF: 10 pages
Proc. SPIE 11083, Optical Trapping and Optical Micromanipulation XVI, 1108307 (9 September 2019);
Show Author Affiliations
Nkosiphile Bhebhe, Univ. of the Witwatersrand, Johannesburg (South Africa)
Peter A. C. Williams, Massachusetts Institute of Technology (United States)
Carmelo Rosales-Guzmán, Harbin Univ. of Science and Technology (China)
Valeria Rodríguez-Fajardo, Univ. of the Witwatersrand, Johannesburg (South Africa)
Andrew Forbes, Univ. of the Witwatersrand, Johannesburg (South Africa)


Published in SPIE Proceedings Vol. 11083:
Optical Trapping and Optical Micromanipulation XVI
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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