BESSEL-GAUSSIAN BEAMS IN AN INHOMOGENEOUS MEDIUM

摘要

Solutions of the parabolic equation which describes propagation of Bessel-Gaussian beams along the axis of an axially-symmetric medium having quadratic inhomogeneity have been obtained and investigated. It is shown that in the process of propagation the parameters of the beams change nonmonotonically. In the case of a transparent medium the beams periodically recover their initial structure.