2017•Optics LettersRequires access
All-polarization-maintaining, stretched-pulse Tm-doped fiber laser, mode-locked by a graphene saturable absorber
Jarosław Sotor, Jakub Bogusławski, Tadeusz Martynkien, Paweł Mergo, Aleksandra Krajewska, Aleksandra Przewłoka, Włodek Strupiński, Grzegorz Soboń
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Abstract
In this Letter, we demonstrate an all-polarization-maintaining, stretched-pulse Tm-doped fiber laser generating ∼200 fs pulses centered at 1945 nm. As a saturable absorber, a graphene/poly(methyl methacrylate) composite was used. To the best of our knowledge, this is the first demonstration of stretched-pulse operation of a graphene-based fiber laser at 2 μm.