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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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2743158 | PMC |
| http://dx.doi.org/10.1364/oe.16.019208 | DOI Listing |
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