title: Excitability in a quantum dot semiconductor laser with optical injection.
abstract: We experimentally analyze the dynamics of a quantum dot semiconductor laser operating under optical injection. We observe the appearance of single- and double-pulse excitability at one boundary of the locking region. Theoretical considerations show that these pulses are related to a saddle-node bifurcation on a limit cycle as in the Adler equation. The double pulses are related to a period-doubling bifurcation and occur on the same homoclinic curve as the single pulses.
authors.affiliation: Tyndall National Institute, Lee Maltings, Cork, Ireland.
authors.forename: D
authors.initials: D
authors.lastname: Goulding
authors.forename: S P
authors.initials: SP
authors.lastname: Hegarty
authors.forename: O
authors.initials: O
authors.lastname: Rasskazov
authors.forename: S
authors.initials: S
authors.lastname: Melnik
authors.forename: M
authors.initials: M
authors.lastname: Hartnett
authors.forename: G
authors.initials: G
authors.lastname: Greene
authors.forename: J G
authors.initials: JG
authors.lastname: McInerney
authors.forename: D
authors.initials: D
authors.lastname: Rachinskii
authors.forename: G
authors.initials: G
authors.lastname: Huyet
mesh_terms: D007834:Lasers; D008962:Models, Theoretical; D055095:Optics and Photonics; D045663:Quantum Dots; D012666:Semiconductors