6533b826fe1ef96bd1285259

RESEARCH PRODUCT

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

Alexander V. Kir'yanovJose L. CruzMiguel V. AndrésPablo Muniz-cánovasYuri O. BarmenkovA. Carrascosa

subject

Ytterbiumoptical fiberMaterials sciencebusiness.industryDopingUNESCO::FÍSICAPhysics::Opticschemistry.chemical_elementQ-switched laserLaserAtomic and Molecular Physics and Opticslaw.inventionfiber laserchemistrylawBrillouin scattering:FÍSICA [UNESCO]Q factorFiber laserOptoelectronicsbusinessLaser threshold

description

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 statistical properties of the latter.

yearjournalcountryeditionlanguage
2020-07-15
10.1109/jlt.2020.2980480https://hdl.handle.net/10550/75284