Dispersion-managed Ho-doped fiber laser mode-locked with a graphene saturable absorber

In this Letter, we demonstrate an all-fiber holmium-doped laser operating in the stretched-pulse regime. As a result of dispersion management, the laser is capable of generating 190 fs pulses with a bandwidth of 53.6 nm. The pulses centered at 2060 nm reach 2.55 nJ of energy. Mode-locking is achieve...

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Veröffentlicht in:Optics letters 2018-01, Vol.43 (1), p.38-41
Hauptverfasser: Pawliszewska, Maria, Martynkien, Tadeusz, Przewłoka, Aleksandra, Sotor, Jarosław
Format: Artikel
Sprache:eng
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Zusammenfassung:In this Letter, we demonstrate an all-fiber holmium-doped laser operating in the stretched-pulse regime. As a result of dispersion management, the laser is capable of generating 190 fs pulses with a bandwidth of 53.6 nm. The pulses centered at 2060 nm reach 2.55 nJ of energy. Mode-locking is achieved with a multilayer graphene saturable absorber (SA). The Letter also presents the measurement of group velocity dispersion of active (Nufern SM-HDF-10/130), passive (SMF28), and dispersion-compensating (Nufern UHNA4) fibers in a 1.8-2.1 μm range. To the best of our knowledge, this is the first report on an all-fiber, stretched-pulse laser operating beyond 2 μm with nanomaterial-based SA.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.43.000038