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Hybrid mode-locking in a 40 GHz monolithic quantum dot laser

Fiol, G.; Arsenijević, Dejan; Bimberg, Dieter; Vladimirov, A. G.; Wolfrum, M.; Viktorov, E. A.; Mandel, Paul

Hybrid mode-locking in monolithic quantum dot (QD) lasers is studied experimentally and theoretically. A strong asymmetry of the locking range with respect to the passive mode locking frequency is observed. The width of this range increases linearly with the modulation amplitude for all operating parameters. Maximum locking range found is 30 MHz. The results of a numerical analysis performed using a set of delay-differential equations taking into account carrier exchange between QDs and wetting layer are in agreement with experiments and indicate that a spectral filtering element could improve locking characteristics.
Published in: Applied Physics Letters, 10.1063/1.3279136, American Institute of Physics (AIP)
  • This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Appl. Phys. Lett. 96, 011104 (2010) and may be found at https://doi.org/10.1063/1.3279136.