Spatial characteristics of the gigawatt laser pulses filamentation area at their different focusing on atmospheric path

摘要

Experimental results on the position and length control of the femtosecond laser pulses filamentation area on the atmospheric path of 30 m length using a different initial spatial focusing are presented. The dependence on the filamentation area length of numerical beam aperture value was obtained. Obtained data comparison on filamentation area length and quantity of filaments with previously conducted experiments results and the other authors' data carried out.