Light-induced rotation of dielectric microparticles around an optical\n nanofiber

2019/07/31 by Georgiy Tkachenko, Ivan Toftul, Tkachenko, Georgiy +11 · 1 citation
Physics and Astronomy · #Experimental and Theoretical Physics Studies #FOS: Physical sciences #Optics (physics.optics) #Orbital Angular Momentum in Optics #Quantum Electrodynamics and Casimir Effect

paper · pdf · doi:10.48550/arxiv.1907.13363

openalex publication_date 2019/07/31 · openalex created_date 2022/07/28 · openalex updated_date 2026/07/28

Abstract

We experimentally demonstrate orbiting of isotropic, dielectric\nmicroparticles around an optical nanofiber that guides elliptically polarized\nfundamental modes. The driving transverse radiation force appears in the\nevanescent electromagnetic fields due to orbital angular momentum. The force\ndirection is opposite to that of the energy flow circulation around the\nnanofiber. Our results verify the theoretically predicted negative optical\ntorque on a sufficiently large particle in the vicinity of a nanofiber.\n

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