title: Dissipative Phase Solitons in Semiconductor Lasers.
abstract: We experimentally demonstrate the existence of nondispersive solitary waves associated with a 2π phase rotation in a strongly multimode ring semiconductor laser with coherent forcing. Similarly to Bloch domain walls, such structures host a chiral charge. The numerical simulations based on a set of effective Maxwell-Bloch equations support the experimental evidence that only one sign of chiral charge is stable, which strongly affects the motion of the phase solitons. Furthermore, the reduction of the model to a modified Ginzburg-Landau equation with forcing demonstrates the generality of these phenomena and exposes the impact of the lack of parity symmetry in propagative optical systems.
authors.affiliation: Université de Nice CNRS, Institut Non Linéaire de Nice, 1361 route des lucioles 06560 Valbonne, France.
authors.forename: F
authors.initials: F
authors.lastname: Gustave
authors.affiliation: Dipartimento Interateneo di Fisica, Università degli Studi e Politecnico di Bari, Via Amendola 173, 70126 Bari, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Columbo
authors.affiliation: Université de Nice CNRS, Institut Non Linéaire de Nice, 1361 route des lucioles 06560 Valbonne, France.
authors.forename: G
authors.initials: G
authors.lastname: Tissoni
authors.affiliation: Dipartimento Interateneo di Fisica, Università degli Studi e Politecnico di Bari, Via Amendola 173, 70126 Bari, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Brambilla
authors.affiliation: Dipartimento di Scienza e Alta Tecnologia, Università dell'Insubria, Via Valleggio 11, 22100 Como, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Prati
authors.affiliation: Centre for Advanced Photonics & Process Analysis and Department of Physical Sciences, Cork Institute of Technology, Cork, Ireland.
authors.forename: B
authors.initials: B
authors.lastname: Kelleher
authors.affiliation: Centre for Advanced Photonics & Process Analysis and Department of Physical Sciences, Cork Institute of Technology, Cork, Ireland.
authors.forename: B
authors.initials: B
authors.lastname: Tykalewicz
authors.affiliation: Université de Nice CNRS, Institut Non Linéaire de Nice, 1361 route des lucioles 06560 Valbonne, France.
authors.forename: S
authors.initials: S
authors.lastname: Barland