Ultrafast thulium-doped fiber laser mode locked with black phosphorus.
We report, for the first time to our knowledge, the usage of black phosphorus (BP) as a saturable absorber for the mode locking of a thulium-doped fiber laser. We have experimentally shown that BP exhibits saturable absorption in the 2 μm wavelength range and supports ultrashort pulse generation. The saturable absorber was based on mechanically exfoliated BP deposited on a fiber connector tip. The laser was capable of generating 739 fs pulses centered at 1910 nm. Our results show that BP might be considered as a universal broadband saturable absorber that could successfully compete with graphene or other low-dimension nanomaterials.
Jaroslaw
J
Sotor
Grzegorz
G
Sobon
Maciej
M
Kowalczyk
Wojciech
W
Macherzynski
Piotr
P
Paletko
Krzysztof M
KM
Abramski