TY CONF TI FILAMENTATION OF LASER PULSES AT HIGH GAS PRESSURE KW filamentation regime KW laser beam KW optical cell JO The XXXI International Symposium "Atmospheric and Ocean Optics. Atmospheric Physics" AU Apeksimov D.V., D.V. AU Babushkin, P.A. AU Geync, Y.E. AU Kabanov, A.M. AU Oshlakov, V.K. AU Petrov, A.V. AU Udalov, A.A. AU Horoshaeva, E.E. PY 2025 PB V.E. Zuev Institute of Atmospheric Optics, Siberian Branch of the Russian Academy of Sciences