Phys. Rev. E 72, 046708 (2005) [6 pages]Efficient computation of optical forces with the coupled dipole methodReceived 30 June 2005; published 18 October 2005 We present computational techniques to compute in an efficient way optical forces on arbitrary nanoobjects using the coupled dipole method. We show how the time of computation can be reduced by several orders of magnitude with the help of fast-Fourier-transform techniques. We also discuss the influence of different formulations of the electric polarizability of a small scatterer on the accuracy and robustness of the computation of optical forces. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.72.046708
DOI:
10.1103/PhysRevE.72.046708
PACS:
42.25.Fx, 41.20.−q, 78.20.Bh, 42.25.Bs
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