We studied theoretically coherent phenomena in the multimode dynamics of single section semiconductor ring lasers with quantum dots (QDs) active region. In the unidirectional ring configuration our simulations show the occurrence of self-mode-locking in the system leading to ultra-short pulses (sub-picoseconds) with a terahertz repetition rate. As confirmed by the linear stability analysis (LSA) of the traveling wave (TW) solutions this phenomenon is triggered by an analogous of the Risken-Nummedal-Graham-Haken (RNGH) instability affecting the multimode dynamics of two-level lasers.

Self-pulsing in single section ring lasers based on quantum dot materials: Theory and simulations / Columbo, Lorenzo Luigi; Bardella, Paolo; Gioannini, Mariangela. - In: OPTICS EXPRESS. - ISSN 1094-4087. - STAMPA. - 26:15(2018), pp. 19044-19058. [10.1364/OE.26.019044]

Self-pulsing in single section ring lasers based on quantum dot materials: Theory and simulations

Columbo, Lorenzo Luigi;Bardella, Paolo;Gioannini, Mariangela
2018

Abstract

We studied theoretically coherent phenomena in the multimode dynamics of single section semiconductor ring lasers with quantum dots (QDs) active region. In the unidirectional ring configuration our simulations show the occurrence of self-mode-locking in the system leading to ultra-short pulses (sub-picoseconds) with a terahertz repetition rate. As confirmed by the linear stability analysis (LSA) of the traveling wave (TW) solutions this phenomenon is triggered by an analogous of the Risken-Nummedal-Graham-Haken (RNGH) instability affecting the multimode dynamics of two-level lasers.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11583/2730892
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