This article is cited in 1 scientific paper (total in 1 paper)
Special issue 'Extreme light fields and their interaction with matter'
The role of dispersion in the mechanism of femtosecond pulse self-shortening in Kerr media
Ya. V. Grudtsyna, A. V. Koributa, L. D. Mikheevab, V. A. Trofimovc, V. I. Yalovoia
a P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow
b National Engineering Physics Institute "MEPhI", Moscow
c Lomonosov Moscow State University
We investigate the influence of material dispersion on the mechanism of self-shortening of femtosecond pulses interacting with fused silica plates having thicknesses an order of magnitude smaller than the dispersion length for the initial 72-fs pulse. The femtosecond pulse self-shortening is observed at large values of the B integral, when small-scale self-focusing develops in the central part of the pulse; this self-focusing plays the role of an optical shutter selecting the unperturbed radiation of the pulse leading edge. A study of the femtosecond pulse self-shortening in 1- and 3-mm-thick fused silica samples reveals that, under the experimental conditions in use, the self-phase modulation enhances the role of dispersion in the formation of a shortened pulse. With an increase in the sample thickness, the shortened pulse width increases as a result of the dispersion spread of the initial pulse in time. At the same time, this shortened pulse remains close to the transform-limited one, independent of the sample thickness.
self-shortening, femtosecond pulses, small-scale selffocusing, modulational instability, nonlinear Schrödinger equation.
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Quantum Electronics, 2019, 49:4, 302–306
Ya. V. Grudtsyn, A. V. Koribut, L. D. Mikheev, V. A. Trofimov, V. I. Yalovoi, “The role of dispersion in the mechanism of femtosecond pulse self-shortening in Kerr media”, Kvantovaya Elektronika, 49:4 (2019), 302–306 [Quantum Electron., 49:4 (2019), 302–306]
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