Nonlinear increase in the energy input into a medium at the fusion of regularized femtosecond filaments

The fusion in air of four femtosecond laser beams each with the peak power several times higher than the critical self-focusing power has been studied experimentally. It has been shown that a superfilament formed in such a regime ensures the efficient energy input to a medium. It has been shown that...

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Bibliographic Details
Published in:JETP letters 2017-11, Vol.106 (9), p.561-564
Main Authors: Pushkarev, D. V., Mitina, E. V., Uryupina, D. S., Volkov, R. V., Panov, N. A., Karabutov, A. A., Kosareva, O. G., Savel’ev, A. B.
Format: Article
Language:English
Subjects:
Atomic
Biological and Medical Physics
Biophysics
Femtosecond pulsed lasers
Filaments
Laser beams
Lasers
Molecular
Optical and Plasma Physics
Optics and Laser Physics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Quantum Information Technology
Solid State Physics
Spintronics
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Summary:The fusion in air of four femtosecond laser beams each with the peak power several times higher than the critical self-focusing power has been studied experimentally. It has been shown that a superfilament formed in such a regime ensures the efficient energy input to a medium. It has been shown that the linear density of the input energy increases approximately quadratically with both the energy of a laser pulse and the number of fused beams.
ISSN:0021-3640
1090-6487
DOI:10.1134/S0021364017210093