A finite difference time domain absorbing boundary condition for general frequency-dispersive media

作者：Wei Bing^*; Li Xiao Yong; Wang Fei; Ge De Biao

来源：Acta Physica Sinica, 2009, 58(9): 6174-6178.

• FDTD
• absorbing boundary condition
• shift operator
• dispersive media

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 (j omega replaced by partial derivative/partial derivative 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.

• 出版日期2009-9
• 单位西安电子科技大学