Light-induced rotation of dielectric microparticles around an optical nanofiber
Journal article, 2020

Evanescent electromagnetic fields near a waveguide can exert a transverse radiation force on scattering objects. To prove this experimentally, we demonstrate light-induced orbiting of isotropic, dielectric microparticles around an optical nanofiber that guides elliptically polarized, fundamental modes. The orbit frequency is proportional to the helicity of the coupled light. Interestingly, the observed motion is opposite to the energy flow circulation around the fiber. This result verifies the theoretically predicted negative optical torque on a sufficiently large particle in the vicinity of a nanofiber.

Author

Georgiy Tkachenko

Okinawa Institute of Science and Technology Graduate University

Ivan Toftul

ITMO University

Cindy Esporlas

Okinawa Institute of Science and Technology Graduate University

Aili Maimaiti

Okinawa Institute of Science and Technology Graduate University

Chalmers, Physics, Bionanophotonics

University College Cork

Fam Le Kien

Okinawa Institute of Science and Technology Graduate University

Viet Giang Truong

Okinawa Institute of Science and Technology Graduate University

Síle Nic Chormaic

Université Grenoble Alpes

Okinawa Institute of Science and Technology Graduate University

Optica

2334-2536 (ISSN)

Vol. 7 1 59-62

Subject Categories

Atom and Molecular Physics and Optics

Other Physics Topics

Condensed Matter Physics

DOI

10.1364/OPTICA.374441

More information

Latest update

2/12/2021