Flexible pulses from carbon nanotubes mode-locked fiber laser
Yang Ling-Zhen1, 2, †, , Yang Yi1, Wang Juan-Fen1
       

Mode-locking characteristics. (a) The output spectrum. (b) Autocorrelation traces of the experimental data (circles) and sech2-shaped fit (solid curve). (c) Fundamental RF spectrum (10-Hz resolution and 1-kHz span). Inset in the top right corner shows the oscilloscope trace of the laser. (d) Wide-band RF spectrum up to 1 GHz.