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arXiv · 1907.13363

Light-induced rotation of dielectric microparticles around an optical nanofiber

Georgiy Tkachenko·Ivan Toftul·Cindy Esporlas·Aili Maimaiti·Fam Le Kien·Viet Giang Truong·Síle Nic Chormaic
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Abstract

We experimentally demonstrate orbiting of isotropic, dielectric microparticles around an optical nanofiber that guides elliptically polarized fundamental modes. The driving transverse radiation force appears in the evanescent electromagnetic fields due to orbital angular momentum. The force direction is opposite to that of the energy flow circulation around the nanofiber. Our results verify the theoretically predicted negative optical torque on a sufficiently large particle in the vicinity of a nanofiber.

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Georgiy Tkachenko, Ivan Toftul, Cindy Esporlas, Aili Maimaiti, Fam Le Kien, Viet Giang Truong, Síle Nic Chormaic. 2019-07-31. Light-induced rotation of dielectric microparticles around an optical nanofiber. https://arxiv.org/abs/1907.13363

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