Multiple filamentation of laser beams of different diameters in air along a 150-meter path


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Abstract

Results of experiments on controlling the position and length of the filamentation region of femtosecond laser pulses along atmospheric paths 150 m long using different initial spatial focusing and defocusing are presented. The distribution of filaments over the filamentation region is found; the dependencies of the length of the filamentation region on the numerical aperture of a beam, its initial radius, and pulse power are derived. Emission spectra of targets made of different materials and placed in the filamentation region far from the radiation source are measured.

About the authors

D. V. Apeksimov

V.E. Zuev Institute of Atmospheric Optics, Siberian Branch

Author for correspondence.
Email: apeximov@iao.ru
Russian Federation, pl. Akademika Zueva 1, Tomsk, 634055

A. A. Zemlyanov

V.E. Zuev Institute of Atmospheric Optics, Siberian Branch

Email: apeximov@iao.ru
Russian Federation, pl. Akademika Zueva 1, Tomsk, 634055

A. N. Iglakova

V.E. Zuev Institute of Atmospheric Optics, Siberian Branch

Email: apeximov@iao.ru
Russian Federation, pl. Akademika Zueva 1, Tomsk, 634055

A. M. Kabanov

V.E. Zuev Institute of Atmospheric Optics, Siberian Branch

Email: apeximov@iao.ru
Russian Federation, pl. Akademika Zueva 1, Tomsk, 634055

O. I. Kuchinskaya

V.E. Zuev Institute of Atmospheric Optics, Siberian Branch; Tomsk State University

Email: apeximov@iao.ru
Russian Federation, pl. Akademika Zueva 1, Tomsk, 634055; pr. Lenina 36, Tomsk, 634050

G. G. Matvienko

V.E. Zuev Institute of Atmospheric Optics, Siberian Branch; Tomsk State University

Email: apeximov@iao.ru
Russian Federation, pl. Akademika Zueva 1, Tomsk, 634055; pr. Lenina 36, Tomsk, 634050

V. K. Oshlakov

V.E. Zuev Institute of Atmospheric Optics, Siberian Branch

Email: apeximov@iao.ru
Russian Federation, pl. Akademika Zueva 1, Tomsk, 634055

A. V. Petrov

V.E. Zuev Institute of Atmospheric Optics, Siberian Branch

Email: apeximov@iao.ru
Russian Federation, pl. Akademika Zueva 1, Tomsk, 634055

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