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Opt Express. 2010 Oct 11;18(21):21603-11. doi: 10.1364/OE.18.021603.

Second harmonic scattering from small particles using Discrete Dipole Approximation.

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  • 1Computation and Systems Biology Program, Singapore MIT Alliance, E4-04-10, 4 Engineering Drive 3, National University of Singapore, 117576 Singapore.


We extend a simple dipole approximation model to predict nonlinear scattering from small particles. This numerical method is known as Discrete Dipole Approximation (DDA) and has been extensively used to model linear scattering by small particles of various shapes and sizes. We show here that DDA can be used to efficiently model second harmonic scattering by small particles. Our results are compared with experimental data and other computational methods.

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