Publishing House SB RAS:

Publishing House SB RAS:

Address of the Publishing House SB RAS:
Morskoy pr. 2, 630090 Novosibirsk, Russia

Advanced Search

Atmospheric and Oceanic Optics

2021 year, number 11

Regularities of propagation of amplitude-modulated powerful femtosecond laser radiation in air

D.V. Apeksimov, P.A. Babushkin, Yu.E. Geints, A.A. Zemlyanov, G.G. Matvienko, V.K. Oshlakov, A.V. Petrov, E.E. Khoroshaeva
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
Keywords: ultrashort laser radiation, structured light, Kerr effect, self-focusing, high-intensity light channels


The results of experimental studies of the features of formation and path propagation of high-intensity light channels under conditions of distortions of the initial profile of a high-power femtosecond laser radiation beam are presented. The distortions are introduced by amplitude modulation of the laser beam with the help of masks. The use of amplitude masks allows generation of a preset number of high-intensity light channels and their controllable filamentation mainly at short (tens of meters) distances of radiation propagation in air.