Analytical Expressions of Diffraction’Free Beams Obtained by Diffraction on an Opaque Disk
Résumé
We establish approached analytical expressions that show that the beam producedafter diffraction of a gaussian beam by an opaque disk and collimation by a lens can be describedby a diffraction-freeJ0Bessel function. We further show that a similar analytical expression canbe established in the case of femtosecond pulses.
Domaines
Physique [physics]
Origine : Accord explicite pour ce dépôt