Open AccessA finite difference time domain absorbing boundary condition for general frequency-dispersive media
Author(s) -
Bing Wei,
Xiaoyong Li,
Wang Fei,
Debiao Ge
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.6174
Subject(s) - finite difference time domain method , lorentz transformation , physics , maxwell's equations , mathematical analysis , boundary value problem , debye , hyperboloid model , anisotropy , curl (programming language) , perfectly matched layer , time domain , optics , mathematics , condensed matter physics , classical mechanics , quantum mechanics , computer science , minkowski space , programming language , computer vision
The dispersion relations and the reflectionless conditions are obtained by the Maxwell’s curl equations in a uniaxial anisotropic medium and the phase-matching. Using the shift operator finite difference time domain SO-FDTD method and the transform relationship of frequency domain to time domain jω replaced by /t, an FDTD absorbing boundary condition for three kinds of general dispersive media model, i.e. the Debye model, Lorentz model and Drude model, is given. The characteristics of our absorbing boundary condition are tested. The computed results illustrated the generality and the feasibility of the scheme.