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Coexistence of quasi-CW and SBS-boosted selfQ-switched pulsing in ytterbium-doped fiber laser with low Q-factor cavity

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	Barmenkov, Yuri O.; Muñiz-Cánovas, Pablo; Kir'yanov, A.; Carrascosa, A.; Cruz Muñoz, José Luis; Andrés, Miguel V. Perfil
	This document is a artículoDate2020
	We report the results of an experimental study of an ytterbium-doped fiber laser with low Q-factor cavity. We demonstrate that the laser operates in two randomly alternating sub-regimes, quasi-CW (QCW) and self-Q-switching (SQS), the latter ignited by stimulated Brillouin scattering (SBS). We show that probability of each sub-regime depends on pump power: QCW dominates slightly above the laser threshold while SQS pulsing prevails at higher pump powers. We also discuss the featuring details of QCW sub-regime and its role in instabilities (jittering) of SBS-boosted SQS pulsing as well as the statisticalproperties of the latter.
	Yuri O. Barmenkov, P. Muniz-Cánovas, A. V. Kir’yanov, A. A. Carrascosa, J. L. Cruz, and M. V. Andrés, "Coexistence of quasi-CW and SBS-boosted self-Q-switched pulsing in ytterbium-doped fiber laser with low Q-factor cavity," Journal Lightwave Technology, Vol. 38, pp. 3751-3758, 2020.
	http://doi.org/10.1109/JLT.2020.2980480