For the first time a detailed study of hybrid mode-locking in two- section InAs/InP quantum dot Fabry-Pérot-type lasers is presented. The output pulses have a typical upchirp of approximately 8 ps/nm, leading to very elongated pulses. The mechanism leading to this typical pulse shape and the phase noise is investigated by detailed radio-frequency and optical spectral studies as well as time-domain studies. The pulse shaping mechanism in these lasers is found to be fundamentally different than the mechanism observed in conventional mode-locked laser diodes, based on quantum well gain or bulk material. ©2009 Optical Society of America.
Heck, M. J. R., Salumbides, E. J., Renault, A., Bente, E. A. J. M., Oei, Y. S., Smit, M. K., Veldhoven, van, P. J., Nötzel, R., Eikema, K. S. E., & Ubachs, W. (2009). Analysis of hybrid mode-locking of two-section quantum dot lasers operating at 1.5 μm. Optics Express, 17(20), 18063-18075. https://doi.org/10.1364/OE.17.018063