Suppressing small-scale self-focusing of high-power femtosecond pulses

It was shown experimentally that for a 65-fs 17-J pulse, the effect of filamentation instability, also known as small-scale self-focusing, is much weaker than that predicted by stationary and nonstationary theoretical models for high B-integral values. Although this discrepancy has been left unexpla...

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Bibliographic Details
Published in:	High power laser science and engineering Vol. 11
Main Authors:	Martyanov, Mikhail, Ginzburg, Vladislav, Balakin, Alexey, Skobelev, Sergey, Silin, Dmitry, Kochetkov, Anton, Yakovlev, Ivan, Kuzmin, Alexey, Mironov, Sergey, Shaikin, Ilya, Stukachev, Sergey, Shaykin, Andrey, Khazanov, Efim, Litvak, Alexander
Format:	Journal Article
Language:	English
Published:	Cambridge, UK Cambridge University Press 01-01-2023
Subjects:	Approximation B-integral cubic Kerr nonlinearity Femtosecond pulses filamentation instability high-power femtosecond laser Lasers nonlinear post-compression Optics Propagation Simulation high-power femtosecond laser filamentation instability cubic Kerr nonlinearity nonlinear post-compression B-integral
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Summary:	It was shown experimentally that for a 65-fs 17-J pulse, the effect of filamentation instability, also known as small-scale self-focusing, is much weaker than that predicted by stationary and nonstationary theoretical models for high B-integral values. Although this discrepancy has been left unexplained at the moment, in practice no signs of filamentation may allow a breakthrough in nonlinear pulse post-compression at high laser energy.
ISSN:	2095-4719 2052-3289
DOI:	10.1017/hpl.2023.20