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Efficient generation of optical bottle beams

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posted on 2023-01-11, 22:47 authored by Yuzhe Xiao, Zhaoning Yu, Raymond A. Wambold, Hongyan Mei, Garrett Hickman, Randall H. Goldsmith, Mark Saffman, Mikhail A. Kats
Optical bottle beams can be used to trap atoms and small low-index particles. We introduce a figure of merit for optical bottle beams, specifically in the context of optical traps, and use it to compare optical bottle-beam traps obtained by three different methods. Using this figure of merit and an optimization algorithm, we identified optical bottle-beam traps based on a Gaussian beam illuminating a metasurface that are superior in terms of power efficiency than existing approaches. We numerically demonstrate a silicon metasurface for creating an optical bottle-beam trap.

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