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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 18, Iss. 15 — Aug. 1, 1993
  • pp: 1211–1213

Dipolar unit size in coupled-dipole calculations of the scattering matrix elements

G. Hoekstra and P. M. A. Sloot  »View Author Affiliations


Optics Letters, Vol. 18, Issue 15, pp. 1211-1213 (1993)
http://dx.doi.org/10.1364/OL.18.001211


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Abstract

The coupled-dipole method is widely used to calculate the light-scattering matrix S from arbitrary particles. An important parameter in the model is the size of the dipolar subunits. Usually a size of ~1/10 to ~1/20 of the wavelength of the incident light is sufficient for accurate calculations. However, it was noted that accurate S34 calculations require much smaller dipolar subunits. We show that this conclusion is too pessimistic, by examining the sensitivity of the S34 elements on surface roughness of spherical particles. Furthermore we give an example of an accurate S34 calculation with dipolar subunits as large as 1/10 of the wavelength.

© 1993 Optical Society of America

History
Original Manuscript: March 12, 1993
Published: August 1, 1993

Citation
G. Hoekstra and P. M. A. Sloot, "Dipolar unit size in coupled-dipole calculations of the scattering matrix elements," Opt. Lett. 18, 1211-1213 (1993)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-18-15-1211

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