Annular phase-only mask for high focal depth.
We present an annularly distributed phase-only mask that generates an axial irradiance distribution identical to the point spread function of the Dowski-Cathey lens [Appl. Opt. 34, 1859 (1995)]. This apodizer has an ambiguity function with a bow-tie effect, and consequently its axial modulation transfer function varies slowly with spherical aberration.
Ojeda-Castaneda
J
J
School of Science, University of las Americas, Puebla 72820, Mexico. jorge.ojeda@udlap.mx
Landgrave
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Escamilla
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