title: Low-frequency self-pulsations in asymmetric external-cavity semiconductor lasers due to multiple-feedback effects.
abstract: We investigate the dynamical stability of external-cavity semiconductor lasers with deliberate tilt asymmetries. Experimentally observed low-frequency self-pulsations are explained by small-signal analysis based on a new rateequation model that uses a time-dependent effective reflectivity to include multiple-feedback effects. We observe and explain the dependence of the self-pulsation frequency on the strength and degree of asymmetry of the feedback, on the injection current, and on the external-cavity length. These results are important in interpreting instabilities, chaos, and other complex dynamical phenomena in external-cavity semiconductor lasers.
authors.forename: J D
authors.initials: JD
authors.lastname: Park
authors.forename: D S
authors.initials: DS
authors.lastname: Seo
authors.forename: J G
authors.initials: JG
authors.lastname: McInerney
authors.forename: G C
authors.initials: GC
authors.lastname: Dente
authors.forename: M
authors.initials: M
authors.lastname: Osiński