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Implementation of the critical points model in the recursive convolution method for modelling dispersive media with the finite-difference time domain method

Alexandre Vial

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We describe the implementation of the critical points model in a finite-difference time domain code dealing with dispersive media through the recursive convolution method. We show that this requires only minor modifications to existing codes able to take the Drude and Lorentz models into account. The use of this model of dispersion over the typical Drude–Lorentz one may be advantageous in specific cases.


PACS

77.22.Ch Permittivity (dielectric function)

02.70.Bf Finite-difference methods

78.20.Bh Theory, models, and numerical simulation

61.46.Df Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots)

Subjects

Computational physics

Condensed matter: electrical, magnetic and optical

Nanoscale science and low-D systems

Dates

Issue 7 (July 2007)

Received 9 February 2007, accepted for publication 11 June 2007

Published 3 July 2007



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