Discrete dipole approximation for time-domain computation of optical forces on magnetodielectric scatterers

Patrick C. Chaumet, Kamal Belkebir, and Adel Rahmani

We present a general approach, based on the discrete dipole approximation (DDA), for the computation of the exchange of momentum between light and a magnetodielectric, three-dimensional object with arbitrary geometry and linear permittivity and permeability tensors in time domain. The method can handle objects with an arbitrary shape, including objects with dispersive dielectric and/or magnetic material responses.

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