The paper studies the conditions for the generation of a highly directional supercontinuum in a filament created in nitrogen gas by aberration focusing of radiation at a wavelength of 940 nm with duration of 70 fs and energy up to 7 mJ. It is shown that the spectrum of the highly directional supercontinuum covers the range from 350 to 1200 nm, its radiation divergence is diffractive, and its energy is 17 µJ.
Лубенко et al. (2026) studied this question.