1.
Opt Lett
; 38(15): 2763-6, 2013 Aug 01.
Article
in English
| MEDLINE
| ID: mdl-23903135
ABSTRACT
Explicit solutions of the inhomogeneous paraxial wave equation in a linear and quadratic approximation are applied to wave fields with invariant features, such as oscillating laser beams in a parabolic waveguide and spiral light beams in varying media. A similar effect of superfocusing of particle beams in a thin monocrystal film, harmonic oscillations of cold trapped atoms, and motion in magnetic field are also mentioned.