Sl. He et al., A new finite-difference time-domain method for photonic crystals consisting of nearly-free-electron metals, J PHYS A, 34(45), 2001, pp. 9713-9721
A finite-difference time-domain method is developed to treat a nearly-free-
electron metal by rewriting the time-domain Maxwell's equations into three
coupled partial differential equations for three vector functions. The meth
od is used to calculate the band structures of two-dimensional metallic pho
tonic crystals, and the numerical results are compared with those obtained
by other methods. The new time-stepping formulae are also used to investiga
te the defect modes by calculating the transmission spectrum.