Imaging

On focusing of laser radiation with an axicon

A. A. Malyutin

Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow

Abstract: The influence of axially symmetric perturbations of the intensity and phase of the laser beam on its focusing by means of an axicon is considered. It is shown that such perturbations give rise to variations in the radiation energy density on the axicon axis with two periods, Λ/γ and Λ²/λ, where λ is the period of perturbation of the laser beam intensity, and γ is the angle of convergence of the focused beam.

PACS: 42.15.Dp, 42.15.Fr, 42.79.Bh

Received: 22.10.2010
Revised: 09.12.2010

 English version: Quantum Electronics, 2011, 41:2, 185–188

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