Broadband wavelength tunability over 136 nm (between 1182.5 nm and 1319 nm) of picosecond pulses in passive mode-locked regime is demonstrated in a multi-section quantum-dot laser in external cavity configuration at room temperature. The maximum peak power of 870 mW with 15 ps pulse duration was achieved at 1226 nm wavelength.
Nikitichev, D. I., Fedorova, K. A., Ding, Y., Alhazime, A., Able, A., Kaenders, W., Krestnikov, I., Livshits, D., & Rafailov, E. U. (2012). Broad wavelength tunability from external cavity quantum-dot mode-locked laser. Applied Physics Letters, 101(12), . https://doi.org/10.1063/1.4751034