Generation of an incident focused light pulse in FDTD.

Generation of an incident focused light pulse in FDTD.
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DOI:
10.1364/oe.16.019208
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发表时间:
2008-11-10
期刊:
影响因子:
3.8
通讯作者:
Backman V
Backman V
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Capoğlu IR;Taflove A;Backman V

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描述了一个简单的程序,用于准确地创建一个入射的聚焦光脉冲在3-D的时域有限差分(FDTD)电磁模拟的像空间的消球差会聚透镜。在该过程中,聚焦的光脉冲近似为一个有限的平面波的总和,每个平面波被引入到FDTD模拟网格使用总场/散射场(TF/SF)的方法。通过与精确理论公式的比较,证明了我们的结果的准确性。
A straightforward procedure is described for accurately creating an incident focused light pulse in the 3-D finite-difference time-domain (FDTD) electromagnetic simulation of the image space of an aplanatic converging lens. In this procedure, the focused light pulse is approximated by a finite sum of plane waves, and each plane wave is introduced into the FDTD simulation grid using the total-field/scattered-field (TF/SF) approach. The accuracy of our results is demonstrated by comparison with exact theoretical formulas.
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