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Appl. Sci. 2016, 6(3), 65; doi:10.3390/app6030065

Real-Time Intensity Domain Characterization of Fibre Lasers Using Spatio-Temporal Dynamics

1
Aston Institute of Photonic Technologies, Aston University, Birmingham B4 7ET, UK
2
Institute of Computational Technologies, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia
3
Novosibirsk State University, Novosibirsk 630090, Russia
*
Author to whom correspondence should be addressed.
Academic Editor: Totaro Imasaka
Received: 14 January 2016 / Revised: 3 February 2016 / Accepted: 6 February 2016 / Published: 25 February 2016
(This article belongs to the Special Issue Fibre Lasers: From Underlying Science and Technology to Applications)
View Full-Text   |   Download PDF [7717 KB, uploaded 25 February 2016]   |  

Abstract

Fibre lasers are light sources that are synonymous with stability. They can give rise to highly coherent continuous-wave radiation, or a stable train of mode locked pulses with well-defined characteristics. However, they can also exhibit an exceedingly diverse range of nonlinear operational regimes spanning a multi-dimensional parameter space. The complex nature of the dynamics poses significant challenges in the theoretical and experimental studies of such systems. Here, we demonstrate how the real-time experimental methodology of spatio-temporal dynamics can be used to unambiguously identify and discern between such highly complex lasing regimes. This two-dimensional representation of laser intensity allows the identification and tracking of individual features embedded in the radiation as they make round-trip circulations inside the cavity. The salient features of this methodology are highlighted by its application to the case of Raman fibre lasers and a partially mode locked ring fibre laser operating in the normal dispersion regime. View Full-Text
Keywords: fibre lasers; real-time characterization; nonlinear dynamics; spatio-temporal dynamics; self-organization; pattern formation fibre lasers; real-time characterization; nonlinear dynamics; spatio-temporal dynamics; self-organization; pattern formation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Sugavanam, S.; Tarasov, N.; Churkin, D.V. Real-Time Intensity Domain Characterization of Fibre Lasers Using Spatio-Temporal Dynamics. Appl. Sci. 2016, 6, 65.

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