Bodrov Sergey, Bukin Vladimir, Tsarev Maxim, Murzanev Aleksey, Garnov Sergey, Aleksandrov Nickolay, Stepanov Andrey
Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia.
Opt Express. 2011 Mar 28;19(7):6829-35. doi: 10.1364/OE.19.006829.
Transverse plasma distribution with 10(17) cm(-3) maximum electron density and 150 μm transverse size in a plasma filament formed in air by an intense femtosecond laser pulse was measured by means of optical interferometry. Two orders of magnitude decay of the electron density within 2 ns was obtained by combined use of the interferometry and newly proposed terahertz scattering techniques. Excellent agreement was obtained between the measured plasma density evolution and theoretical calculation.
