Impacts of carrier capture and relaxation rates on the modulation response of injection-locked quantum dot lasers

Cheng Wang; Frédéric Grillot; Jacky Even

doi:10.1117/12.2001929

14 March 2013 Impacts of carrier capture and relaxation rates on the modulation response of injection-locked quantum dot lasers

Cheng Wang, Frédéric Grillot, Jacky Even

Author Affiliations +

Proceedings Volume 8619, Physics and Simulation of Optoelectronic Devices XXI; 861908 (2013) https://doi.org/10.1117/12.2001929
Event: SPIE OPTO, 2013, San Francisco, California, United States

Abstract

Taking into account the carrier dynamics in the wetting layer, excited state and the ground state, the intensity modulation properties of an injection-locked quantum dot laser are studied theoretically through a semi-analytical approach. It is demonstrated that both high carrier capture and relaxation rates enhance the modulation bandwidth as well as the resonance-peak amplitude. Moreover, the pre-resonance dip arising under positive detuning can be eliminated as well, which is beneficial for further bandwidth enhancement. It is also found that a large capture time reduces both the resonance frequency and the damping factor while both are increased by a large relaxation time.

Citation Download Citation

Cheng Wang, Frédéric Grillot, and Jacky Even "Impacts of carrier capture and relaxation rates on the modulation response of injection-locked quantum dot lasers", Proc. SPIE 8619, Physics and Simulation of Optoelectronic Devices XXI, 861908 (14 March 2013); https://doi.org/10.1117/12.2001929

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