Square wave excitability in quantum dot lasers under optical injection

Autor:	Dillane, Michael, Tykalewicz, Bogalsaw, Goulding, David, Garbin, Bruno, Barland, Stephane, Kelleher, Bryan
Rok vydání:	2018
Předmět:	Physics - Optics
Druh dokumentu:	Working Paper
DOI:	10.1364/OL.44.000347
Popis:	Quantum dot lasers display many unique dynamic phenomena when optically injected. Bistability has been predicted in a region of high injection strength. We show experimentally, rather than a phase-locked bistability, a square wave phenomenon is observed in this region. The squares can manifest as a periodic train but also as noise driven Type II excitable events. We interpret the appearance of the square waves as a thermally induced breaking of the bistability. Indeed we find experimentally that over the duration of a square the relative detuning between the master and the slave evolves deterministically. A relatively simple, physically motivated, rate equation model is presented and displays excellent agreement with the experiment. Comment: 8 pages, 5 figures, preprint
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1812.05036 Zobrazit plný text záznamu View this record from Arxiv