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Calculations of Torques on Particles in Laguerre-Gaussian Beams

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Abstract

The angular momentum transferred by Laguerre-Gaussian beams is calculated using the T-matrix method, and a simple formula derived for the induced torque. Coupling mechanisms are compared for weakly absorbing spheres, non-absorbing spheroids, and birefringent spheres.

© 2009 Optical Society of America

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