N. A. Panov, O. G. Kosareva, A. B. Savel'ev-Trofimov, D. S. Uryupina, I. A. Perezhogin, V. A. Makarov, “Filamentation of femtosecond Gaussian pulses with close-to-linear or -circular elliptical polarisation”, Kvantovaya Elektronika, 2011, Volume 41, Number 2,Pages <nobr>160

This article is cited in 19 papers

Nonlinear optical phenomena

Filamentation of femtosecond Gaussian pulses with close-to-linear or -circular elliptical polarisation

N. A. Panov^ab, O. G. Kosareva^ab, A. B. Savel'ev-Trofimov^ab, D. S. Uryupina^ab, I. A. Perezhogin^ab, V. A. Makarov^ab

^a Lomonosov Moscow State University, Faculty of Physics
^b International Laser Center of Moscow State University

Abstract: A numerical investigation was made of the formation and development of filaments in the propagation of high-power femtosecond Gaussian laser pulses in argon, whose polarisation is close to the linear or circular one. Filaments produced by close-to-circularly polarised pulses were found to be more uniform, greater in diameter, and higher in intensity than the filaments produced by close-to-linearly polarised pulses. For incident pulses with a close-to-linear (circular) polarisation, the degree of ellipticity of the radiation on the axis of the resultant filament becomes equal to zero (unity) at the instant of the peak of the local intensity.

PACS: 42.65.Re, 42.65.Hw, 42.25.Ja, 33.80.Eh

Received: 21.09.2010
Revised: 20.12.2010