Q switched Er doped fiber laser with single walled carbon nanotube saturable abs

A Q-switched Er-doped all-fiber laser, based on a single-walled carbon nanotube saturable absorber (SA) is constructed. The SA with a modulation depth of 8% is prepared using a special chemical-corrosion method. Furthermore, the SA is introduced to an Er-doped all-fiber laser, and Q-switching is obt