title: Alternate oscillations in semiconductor ring lasers.
abstract: We report on fabrication and characterization of single-longitudinal- and transverse-mode semiconductor ring lasers. A bifurcation from bidirectional stable operation to a regime with alternate oscillations of the counterpropagating modes was observed experimentally and is theoretically explained through a two-mode model. Analytical expressions for the onset and the frequency of the oscillations are derived, and L-I curves numerically evaluated. Good quantitative agreement between theory and measurements made over a large number of tested devices is obtained.
authors.forename: M
authors.initials: M
authors.lastname: Sorel
authors.forename: P J R
authors.initials: PJ
authors.lastname: Laybourn
authors.forename: A
authors.initials: A
authors.lastname: Scirè
authors.forename: S
authors.initials: S
authors.lastname: Balle
authors.forename: G
authors.initials: G
authors.lastname: Giuliani
authors.forename: R
authors.initials: R
authors.lastname: Miglierina
authors.forename: S
authors.initials: S
authors.lastname: Donati