Abstract

This paper discusses a nontraditional optical shaping system for generating extended plasma channels in the atmosphere, using pulsed CO<sub>2</sub> lasers and consisting of a convex mirror axicon with a rectilinear generatrix and a retranslating layout composed of two spherical optical elements. The system makes it possible to form the waist of a Bessel beam at a significant distance from the axicon. An analytical model is proposed for designing the developed optical system.

© 2008 Optical Society of America

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