Direct time integration of Maxwell's equations in linear dispersive media with absorption for scattering and propagation of femtosecond electromagnetic pulses.
Direct time integration of Maxwell's equations in linear dispersive media with absorption for scattering and propagation of femtosecond electromagnetic pulses.
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DOI：
10.1364/ol.16.001412
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发表时间：
1991-09
期刊：
影响因子：
3.6
通讯作者：
R. M. Joseph;S. Hagness;A. Taflove
中科院分区：
文献类型：
--
作者：
R. M. Joseph;S. Hagness;A. Taflove
本文报道了用麦克斯韦方程直接时间积分的方法得到洛伦兹介质中飞秒脉冲传输和散射相互作用的初步结果。对于0.2fS高斯脉冲入射洛伦兹介质半空间，在DC~3×1016 Hz的频率范围内，该计算方法提供了优于万分之六的反射系数。给出了索末菲和布里渊前兆的新结果，并与以前的分析进行了比较。这种方法是稳健的，并且允许直接从全矢量麦克斯韦方程来传输二维和三维电磁脉冲。
We report the initial results for femtosecond pulse propagation and scattering interactions for a Lorentz medium obtained by a direct time integration of Maxwell's equations. The computational approach provides reflection coefficients accurate to better than 6 parts in 10,000 over the frequency range of dc to 3 × 1016 Hz for a single 0.2-fs Gaussian pulse incident upon a Lorentz-medium half-space. New results for Sommerfeld and Brillouin precursors are shown and compared with previous analyses. The present approach is robust and permits two-dimensional and three-dimensional electromagnetic pulse propagation directly from the full-vector Maxwell's equations.