Fast vectorial calculation of the volumetric focused field distribution by using a three-dimensional Fourier transform

J. Lin, O. G. Rodríguez-Herrera, F. Kenny, D. Lara, J. C. Dainty

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41 Citations (Scopus)


We show that the volumetric field distribution in the focal region of a high numerical aperture focusing system can be efficiently calculated with a three-dimensional Fourier transform. In addition to focusing in a single medium, the method is able to calculate the more complex case of focusing through a planar interface between two media of mismatched refractive indices. The use of the chirp z-transform in our numerical implementation of the method allows us to perform fast calculations of the three-dimensional focused field distribution with good accuracy.

Original languageEnglish
Pages (from-to)1060-1069
Number of pages10
JournalOptics Express
Issue number2
Publication statusPublished - 16 Jan 2012
Externally publishedYes

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