Potravkin N N, Perezhogin I A, Makarov V A
Faculty of Physics and International Laser Center of Lomonosov Moscow State University, Moscow, Russia.
Phys Rev E Stat Nonlin Soft Matter Phys. 2012 Nov;86(5 Pt 2):056706. doi: 10.1103/PhysRevE.86.056706. Epub 2012 Nov 15.
We propose an alternative method of integration of Maxwell equations. This method is the generalization of a finite-difference time-domain method with an auxiliary differential equation for the case of a linear optical medium with a frequency dispersion and an arbitrary source of spatial dispersion. We apply this method to the problem of the propagation of short plane-wave linearly polarized light pulses in such a medium. It is shown that some features of their propagation are completely different from those that are generally recognized for the linear optical activity phenomenon. For example, in some cases an initially linearly polarized light pulse becomes elliptically polarized during the propagation. This effect is more prominent in the front part of the pulse.
我们提出了一种麦克斯韦方程组的积分替代方法。该方法是对具有辅助微分方程的时域有限差分方法的推广，适用于具有频率色散和任意空间色散源的线性光学介质情况。我们将此方法应用于短平面波线偏振光脉冲在这种介质中传播的问题。结果表明，其传播的一些特性与线性光学活性现象通常所公认的特性完全不同。例如，在某些情况下，初始线偏振光脉冲在传播过程中会变成椭圆偏振。这种效应在脉冲的前部更为显著。
