# Discrete-dipole approximation for periodic targets: theory and tests.

@article{Draine2008DiscretedipoleAF, title={Discrete-dipole approximation for periodic targets: theory and tests.}, author={Bruce T. Draine and Piotr J. Flatau}, journal={Journal of the Optical Society of America. A, Optics, image science, and vision}, year={2008}, volume={25 11}, pages={ 2693-703 } }

The discrete-dipole approximation (DDA) is a powerful method for calculating absorption and scattering by targets that have sizes smaller than or comparable to the wavelength of the incident radiation. The DDA can be extended to targets that are singly or doubly periodic. We generalize the scattering amplitude matrix and the 4 x 4 Mueller matrix to describe scattering by singly and doubly periodic targets and show how these matrices can be calculated using the DDA. The accuracy of DDA…

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