Light-induced rotation of dielectric microparticles around an optical nanofiber
- 14 January 2020
- journal article
- research article
- Published by Optica Publishing Group in Optica
- Vol. 7 (1), 59-62
- https://doi.org/10.1364/optica.374441
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.Keywords
Funding Information
- Okinawa Institute of Science and Technology Graduate University
- Japan Society for the Promotion of Science (P18367)
- Russian Foundation for Basic Research (19-32-90237)
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