Fiber lasers operating via Raman gain or based on rare-earthdoped 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.
Ginzburg-Landau turbulence in quasi-CW Raman fiber lasers
WABNITZ, Stefan;
2015-01-01
Abstract
Fiber lasers operating via Raman gain or based on rare-earthdoped 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.File | Dimensione | Formato | |
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