58 kHz ultra-low repetition rate ultralong Erbium-doped fiber laser mode-locked by carbon nanotubes


In this paper we present a 58 kHz fundamental repetition rate 3.5 km long EDFL mode-locked by SWCNT saturable absorbers. Because laser nonlinearities and accumulated dispersion, we observed chirped soliton-like 6.79 ps pulses with 0.49 nm spectral width. This is the lowest repetition rate in EDFL, to the best of our knowledge. 


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