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Nat Commun. 2016 Aug 9;7:12441. doi: 10.1038/ncomms12441.

Mode-locking via dissipative Faraday instability.

Author information

1
Aston Institute of Photonic Technologies, Aston University, Birmingham B4 7ET, UK.
2
Institute of Computational Technologies SB RAS, 630090 Novosibirsk, Russia.
3
Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya, Colom 11, 08222 Terrassa, Spain.
4
Novosibirsk State University, 1 Pirogova St., 630090 Novosibirsk, Russia.
5
Institució Catalana de Recerca i Estudis Avançats (ICREA), Pg. Lluis Companys, 23, 08010 Barcelona, Spain.

Abstract

Emergence of coherent structures and patterns at the nonlinear stage of modulation instability of a uniform state is an inherent feature of many biological, physical and engineering systems. There are several well-studied classical modulation instabilities, such as Benjamin-Feir, Turing and Faraday instability, which play a critical role in the self-organization of energy and matter in non-equilibrium physical, chemical and biological systems. Here we experimentally demonstrate the dissipative Faraday instability induced by spatially periodic zig-zag modulation of a dissipative parameter of the system-spectrally dependent losses-achieving generation of temporal patterns and high-harmonic mode-locking in a fibre laser. We demonstrate features of this instability that distinguish it from both the Benjamin-Feir and the purely dispersive Faraday instability. Our results open the possibilities for new designs of mode-locked lasers and can be extended to other fields of physics and engineering.

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