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Laser radiation scattering by the optical breakdown plasma

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3 Author(s)
Bufetov, I.A. ; Gen. Phys. Inst., Acad. of Sci., Moscow, Russia ; Bufetova, G.A. ; Fedorov, V.

The spatial distribution measurements of laser radiation, scattered in the laser spark, were accomplished for various laser radiation wavelengths (1060, 530, 353, and 265 nm) and various pressures of the gas (air at 10-760 mm Hg). The interference structure of the laser light scattering cone behind the laser spark was observed for the first time. It is proposed to consider the observed structure as a result of interference of the laser radiation, scattered by two or more self-focusing centers in laser spark air plasma. The experimental dependence of the maximal angle of the light scattering on the gas pressure and on the laser radiation wavelength was obtained

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Quantum Electronics, IEEE Journal of  (Volume:31 ,  Issue: 6 )