Bismuth-doped fiber laser at 1.32 μm mode-locked by single-walled carbon nanotubes

Bismuth-doped fiber is a promising active media for pulsed lasers operating in various spectral regions. In this paper, we report on a picosecond mode-locked laser at a wavelength of 1.32 mu m, based on a phosphosilicate fiber doped with bismuth. Stable self-starting generation of dissipative solitons, using single-walled carbon nanotubes (SWCNT) as a saturable absorber, was achieved. Evolution of the pulsed regime, depending on pump power, and stability of the pulsing were investigated. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement