Ginzburg-Landau turbulence in quasi-CW Raman fiber lasers

Year: 2015

Authors: Sugavanam S., Tarasov N., Wabnitz S., Churkin D.V.

Autors Affiliation: Aston Institute of Photonic Technologies, Aston University, Birmingham, B4 7ET, United Kingdom; Institute of Computational Technologies SB RAS, Novosibirsk, 630090, Russian Federation; Dipartimento di Ingegneria dell

Abstract: Fiber lasers operating via Raman gain or based on rare-earth-doped active fibers are widely used as sources of CW radiation. However, these lasers are only quasi-CW: their intensity fluctuates strongly on short time scales. Here the framework of the complex Ginzburg-Landau equations, which are well known as an efficient model of mode-locked fiber lasers, is applied for the description of quasi-CW fiber lasers. The vector Ginzburg-Landau model of a Raman fiber laser describes the experimentally observed turbulent-like intensity dynamics, as well as polarization rogue waves. Our results open debates about the common underlying physics of operation of very different laser types – quasi-CW lasers and passively mode-locked lasers. Fiber lasers operating via Raman gain or based on rare-earth-doped active fibers are widely used as sources of CW radiation. However, these lasers are only quasi-CW: their intensity fluctuates strongly on short time scales. Here the framework of the complex Ginzburg-Landau equations, which are well known as an efficient model of mode-locked fiber lasers, is applied for the description of quasi-CW fiber lasers. Our results open debates about the common underlying physics of operation of very different laser types – quasi-CW lasers and passively mode-locked lasers.

Journal/Review: LASER & PHOTONICS REVIEWS

Volume: 9 (6)      Pages from: L35  to: L39

KeyWords: Continuous wave lasers; Difference equations; Fiber lasers; Fibers; Lasers; Passive mode locking; Polarization; Rare earth-doped fibers; Rare earths; Turbulence, Complex Ginzburg-Landau equation; Ginzburg-Landau models; Optical turbulence; Passively mode-locked lasers; Raman fiber lasers; Rare earth doped; Rogue waves; Short time scale, Mode-locked fiber lasers
DOI: 10.1002/lpor.201500012

Citations: 20
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