Neuromorphic dynamics with optically injected quantum dot lasers

Michael Dillane, Joshua Robertson, Matthew Peters, Antonio Hurtado, Bryan Kelleher

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)
30 Downloads (Pure)


Optically injected quantum dot lasers display many unique nonlinear phenomena and are in particular, excellent testbeds for dierent forms of excitability. We analyse the recent discovery of Type II excitability in such devices. An optothermal instability leads to the phenomenon and while an underlying Hopf bifurcation is ultimately responsible for the observation, intriguingly there are two potential routes: One via a subcritical bifurcation and an associated bistable region and the other via a supercritical bifurcation and an associated canard explosion.
Original languageEnglish
Article number197
Number of pages8
JournalEuropean Physical Journal B - Condensed Matter and Complex Systems
Issue number9
Publication statusPublished - 9 Sept 2019


  • quantum dot lasers
  • neuromorphic photonics
  • nonlinear phenomena
  • optothermal instability
  • hopf bifurcation


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