Analytical expressions for diffraction-free beams through an opaque disk

Q. Huang; S. Coetmellec; F. Duval; A. Louis; H. Leblond; M. Brunel

doi:10.2971/jeos.2011.11031

Journal of the European Optical Society - Rapid publications, Vol 6 (2011)

Analytical expressions for diffraction-free beams through an opaque disk

Q. Huang, S. Coetmellec, F. Duval, A. Louis, H. Leblond, M. Brunel

Abstract

We establish analytical expressions that demonstrate that the beam produced after diffraction of a gaussian beam by an opaque disk and collimation by a lens can be approached by a diffraction-free J0 Bessel function. We further demonstrate that a similar analytical expression can be established in the
case of femtosecond incident pulses

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