paraxial

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Related to Paraxial approximation: paraxial rays

paraxial

(pæˈræksɪəl)
adj
(General Physics) physics (of a light ray) parallel to the axis of an optical system
References in periodicals archive ?
Using the paraxial approximation, by considering that the dimensions [x.
However, these expansions suffer from a strong limitation, the paraxial approximation, that imposes to describe fields weakly diverging with respect to a main propagation direction.
In the expression of the standard Laguerre-Gaussian beams where the paraxial approximation is applied, only the Gaussian part has a complex argument.
If greater aperture angles are used leaving the validity of the paraxial approximation [30-32], a greater number of terms in Eq.
Some authors proposed replacing a real point source with a complex placed one to obtain Gaussian beams as a paraxial approximation to certain solutions of the Helmholtz wave equation [2-5].