The laminar-turbulent transition in a fibre laser

E.G. Turitsyna, S.V. Smirnov, S. Sugavanam, N. Tarasov, X. Shu, S.A. Babin, E.V. Podivilov, D.V. Churkin, G. Falkovich, S.K. Turitsyn*

*Corresponding author for this work

Research output: Contribution to journalLetter

Abstract

Studying the transition from a linearly stable coherent laminar state to a highly disordered state of turbulence is conceptually and technically challenging, and of great interest because all pipe and channel flows are of that type. In optics, understanding how a system loses coherence, as spatial size or the strength of excitation increases, is a fundamental problem of practical importance. Here, we report our studies of a fibre laser that operates in both laminar and turbulent regimes. We show that the laminar phase is analogous to a one-dimensional coherent condensate and the onset of turbulence is due to the loss of spatial coherence. Our investigations suggest that the laminar-turbulent transition in the laser is due to condensate destruction by clustering dark and grey solitons. This finding could prove valuable for the design of coherent optical devices as well as systems operating far from thermodynamic equilibrium.

Original languageEnglish
Pages (from-to)783-786
Number of pages4
JournalNature Photonics
Volume7
Issue number10
Early online date22 Sep 2013
DOIs
Publication statusPublished - 27 Sep 2013

Fingerprint

Fiber lasers
fiber lasers
condensates
Turbulence
turbulence
pipe flow
Pipe flow
channel flow
Channel flow
thermodynamic equilibrium
Optical devices
Solitons
destruction
Optics
solitary waves
Thermodynamics
optics
Lasers
excitation
lasers

Keywords

  • fiber laser
  • turbulence
  • solitons

Cite this

Turitsyna, E.G. ; Smirnov, S.V. ; Sugavanam, S. ; Tarasov, N. ; Shu, X. ; Babin, S.A. ; Podivilov, E.V. ; Churkin, D.V. ; Falkovich, G. ; Turitsyn, S.K. / The laminar-turbulent transition in a fibre laser. In: Nature Photonics. 2013 ; Vol. 7, No. 10. pp. 783-786.
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Turitsyna, EG, Smirnov, SV, Sugavanam, S, Tarasov, N, Shu, X, Babin, SA, Podivilov, EV, Churkin, DV, Falkovich, G & Turitsyn, SK 2013, 'The laminar-turbulent transition in a fibre laser', Nature Photonics, vol. 7, no. 10, pp. 783-786. https://doi.org/10.1038/NPHOTON.2013.246

The laminar-turbulent transition in a fibre laser. / Turitsyna, E.G.; Smirnov, S.V.; Sugavanam, S.; Tarasov, N.; Shu, X.; Babin, S.A.; Podivilov, E.V.; Churkin, D.V.; Falkovich, G.; Turitsyn, S.K.

In: Nature Photonics, Vol. 7, No. 10, 27.09.2013, p. 783-786.

Research output: Contribution to journalLetter

TY - JOUR

T1 - The laminar-turbulent transition in a fibre laser

AU - Turitsyna, E.G.

AU - Smirnov, S.V.

AU - Sugavanam, S.

AU - Tarasov, N.

AU - Shu, X.

AU - Babin, S.A.

AU - Podivilov, E.V.

AU - Churkin, D.V.

AU - Falkovich, G.

AU - Turitsyn, S.K.

PY - 2013/9/27

Y1 - 2013/9/27

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AB - Studying the transition from a linearly stable coherent laminar state to a highly disordered state of turbulence is conceptually and technically challenging, and of great interest because all pipe and channel flows are of that type. In optics, understanding how a system loses coherence, as spatial size or the strength of excitation increases, is a fundamental problem of practical importance. Here, we report our studies of a fibre laser that operates in both laminar and turbulent regimes. We show that the laminar phase is analogous to a one-dimensional coherent condensate and the onset of turbulence is due to the loss of spatial coherence. Our investigations suggest that the laminar-turbulent transition in the laser is due to condensate destruction by clustering dark and grey solitons. This finding could prove valuable for the design of coherent optical devices as well as systems operating far from thermodynamic equilibrium.

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Turitsyna EG, Smirnov SV, Sugavanam S, Tarasov N, Shu X, Babin SA et al. The laminar-turbulent transition in a fibre laser. Nature Photonics. 2013 Sep 27;7(10):783-786. https://doi.org/10.1038/NPHOTON.2013.246