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Proceedings Paper

Light engine: optically induced and controlled matter rotation by means of traveling and standing waves
Author(s): Tigran V. Galstian
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Paper Abstract

Both quantum and electromagnetic theories of light predict the existence of angular momentum of the light (or photon spin) S and the possibility of its transfer to the matter /1/. Complex electromagnetic fields (e.g., higher order Laguerre-Gaussian beams) may carry, in addition, an "orbital" angular momentum L, associated with their spatial non uniformity /2/. These momentums may be transferred to matter when the light is absorbed by the matter. In general case, the torque r exerted by absorbed light has contributions from both momentums S and L, and may be presented as T(Pa/O))(1+cY), where a is the absorbed power, Co - light frequency, 1- is the azimuthal index (or charge) of the beam, and a=O for linear and = for circular polarizations /2, 3/.

Paper Details

Date Published: 7 July 1997
PDF: 7 pages
Proc. SPIE 3123, Materials Research in Low Gravity, (7 July 1997); doi: 10.1117/12.277732
Show Author Affiliations
Tigran V. Galstian, COPL/Univ. Laval (Canada)

Published in SPIE Proceedings Vol. 3123:
Materials Research in Low Gravity
Narayanan Ramachandran, Editor(s)

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