Abstract
We report the generation of stretched pulses in a passively mode-locked fiber laser based on a single-wall carbon nanotube saturable absorber. The spectral bandwidth and pulse duration of the single stretched pulse are ∼25 nm and ∼1.43 ps, respectively. By increasing the pump power and adjusting the polarization state, bound-state stretched pulses are delivered from the fiber laser. The pulse–pulse separation and wavelength spacing of the bound-state pulses are ∼7.8 ps and ∼1 nm, respectively. Numerical simulations reproduce the experimental results and agree well with the experimental observations.
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