Quantum cascade lasers with optical feedback: regular multimode dynamics

L. L. Columbo; M. Brambilla; F. P. Mezzapesa; Maurizio Dabbicco; G. Scamarcio

doi:10.1117/12.2084520

8 February 2015 Quantum cascade lasers with optical feedback: regular multimode dynamics

L. L. Columbo, M. Brambilla, F. P. Mezzapesa, Maurizio Dabbicco, G. Scamarcio

Proceedings Volume 9370, Quantum Sensing and Nanophotonic Devices XII; 937013 (2015) https://doi.org/10.1117/12.2084520
Event: SPIE OPTO, 2015, San Francisco, California, United States

Abstract

We study the dynamics of a Quantum Cascade Laser subject to strong optical feedback in the framework of the Lang-Kobayashi model. In particular, we demonstrate that the continuous wave instability may lead to coherent multimode oscillations that indicate spontaneous phase-locking among external cavity modes. We recently predicted that this unique behavior is linked to the absence of relaxation oscillations in unipolar semiconductor lasers, which are characterized by a fast carriers recombination time (class-A lasers). These theoretical evidences may help understanding the mechanisms possibly leading to spontaneous mode-locking and pulse generation in QCLs.

Citation Download Citation

L. L. Columbo, M. Brambilla, F. P. Mezzapesa, Maurizio Dabbicco, and G. Scamarcio "Quantum cascade lasers with optical feedback: regular multimode dynamics", Proc. SPIE 9370, Quantum Sensing and Nanophotonic Devices XII, 937013 (8 February 2015); https://doi.org/10.1117/12.2084520

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