title: Optically injected quantum-dot lasers.
abstract: The response of an optically injected quantum-dot semiconductor laser (SL) is studied both experimentally and theoretically. In particular, the nature of the locking boundaries is investigated, revealing features more commonly associated with Class A lasers rather than conventional Class B SLs. Experimentally, two features stand out; the first is an absence of instabilities resulting from relaxation oscillations, and the second is the observation of a region of bistability between two locked solutions. Using rate equations appropriate for quantum-dot lasers, we analytically determine the stability diagram in terms of the injection rate and frequency detuning. Of particular interest are the Hopf and saddle-node locking boundaries that explain how the experimentally observed phenomena appear.
authors.affiliation: Université Libre de Bruxelles, Optique Nonlinéaire Théorique, Campus Plaine, Code Postal 231, 1050 Bruxelles, Belgium.
authors.forename: T
authors.initials: T
authors.lastname: Erneux
authors.forename: E A
authors.initials: EA
authors.lastname: Viktorov
authors.forename: B
authors.initials: B
authors.lastname: Kelleher
authors.forename: D
authors.initials: D
authors.lastname: Goulding
authors.forename: S P
authors.initials: SP
authors.lastname: Hegarty
authors.forename: G
authors.initials: G
authors.lastname: Huyet