Plasmonic particles set into fast orbital motion by an optical vortex beam WARI SC, 1992, JOURNAL OF MODERN OPTICS, V39, P1097
Journal article, 2014

We optically trap plasmonic gold particles in two dimensions and set them into circular motion around the optical axis using a helically phased vortex laser beam. The orbiting frequency of the particles reaches 86 Hz, which corresponds to a particle velocity of the order 1 mm per second, for an incident laser power of a few tens of milliwatts. The experimentally determined orbiting frequencies are found to be well in line with the notion that the beam carries an orbital angular momentum of hl per photon. (C) 2014 Optical Society of America

METAL NANOPARTICLES

PHASE

ROTATION

LIGHT-BEAM

DRIVEN

ANGULAR-MOMENTUM

Author

Anni Lehmuskero

Chalmers, Applied Physics, Bionanophotonics

Y. M. Li

North Carolina State University

Peter Johansson

Chalmers, Applied Physics, Bionanophotonics

Mikael Käll

Chalmers, Applied Physics, Bionanophotonics

Optics Express

1094-4087 (ISSN)

Vol. 22 4 4349-4356

Subject Categories

Atom and Molecular Physics and Optics

DOI

10.1364/oe.22.004349

More information

Created

10/7/2017