Abstract
In light focusing through a dielectric interface, Wiersma et al. [J. Opt. Soc. Am. A 14, 1482 (1997) [CrossRef] ] claim that the Debye–Wolf diffraction theory and the -theory predict axial focal fields with “little difference.” We found a possible mistake of using an inaccurate apodization factor in the -theory integral. Here we correct the apodization factor, which then leads to better agreement on axial intensity distributions between the two theories than reported.
© 2018 Optical Society of America
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