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Kvantovaya Elektronika, 2019 Volume 49, Number 10, Pages 925–930 (Mi qe17125)

Lasers

Generation of parabolic laser pulses in short fibre amplifiers

I. A. Shchukareva, D. A. Korobkoa, M. Yu. Salganskiib, I. O. Zolotovskiia

a Technological Research Institute of Ulyanovsk State University
b Institute of Chemistry of High-Purity Substances RAS, Nizhnii Novgorod

Abstract: The laser pulse evolution in a normal-dispersion fibre amplifier is studied. The cases of ideal spectrum-homogeneous and transform-limited amplification are considered. It is shown that the envelope transformation of the input pulse to a parabolic form is possible not only for spectrally-flat amplification, but also for transform-limited one. In the latter case, an important parameter is the optimal amplifier length. The results demonstrate that, in the case of a sufficiently wide amplification spectrum, it is always possible to find the optimal amplifier length, after passing through which the output pulse envelope is close to a parabola.

Keywords: fibre amplifiers, parabolic pulses, normal dispersion.

Received: 08.04.2019


 English version:
Quantum Electronics, 2019, 49:10, 925–930

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© Steklov Math. Inst. of RAS, 2025