Passively Mode-Locked Ytterbium-Doped Fiber Laser Based on Fe3O4 Nanosheets Saturable Absorber

Abstract

Two-dimensional material nanosheets have always been a research hotspot because of their unique structure and properties. We report mode-locked operation in ytterbium-doped fiber laser (YDFL) for the first time by adopting Fe3O4 nanosheets as a saturable absorber (SA). The laser is capable of generating 456 ps pulses, centered around 1039 nm. Our results manifest that Fe3O4 nanosheets are expected to become a new type of saturable absorber, which can better promote the development of mode-locked lasers.

Dual-Wavelength Mode-Locked Oscillation with Graphene Nanoplatelet Saturable Absorber in Erbium-Doped Fiber Laser

“…Concurrently, new kinds of 2D materials keep emerging as new potential saturable absorbers owing to their excellent optical properties such as short recovery time, small bandgap energy, broadband absorption and high compatibility with fiber laser systems. This includes materials from the group of transition metal oxides [11][12][13], transition metal dichalcogenides [14,15] and topological insulators [16,17]. Undeniably, the advancement of these materials can be traced back to the superiority and versatility of their pioneer, graphene, which is still worthy of investigation to date [18][19][20][21][22][23][24][25].…”