Abstract
We experimentally create a ‘perfect’ vortex beam, which has a uniform ring profile and fixed radius. In contrast with other vortex fields, the intensity profile is independent of its topological charge. We then correct this field in situ using a single trapped particle as a probe. This results in a constant angular velocity for the particle regardless of its position on the beam circumference.
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The authors would like to thank the UK Engineering and Physical Sciences Research Council (EPSRC) for funding.
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Chen, M., Mazilu, M., Arita, Y. et al. Creating and probing of a perfect vortex in situ with an optically trapped particle. Opt Rev 22, 162–165 (2015). https://doi.org/10.1007/s10043-015-0031-7
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DOI: https://doi.org/10.1007/s10043-015-0031-7