Eur. Phys. J. D 59, 115-120 (2010)
https://doi.org/10.1140/epjd/e2010-00110-0

Self-pulsing localized structures in a laser with saturable absorber

¹ CNISM and Dipartimento di Fisica Interateneo, Università e Politecnico di Bari, via Orabona 4, 70125 Bari, Italy
² CNISM and Dipartimento di Fisica e Matematica, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy

Corresponding author: ^a lorenzo.columbo@gmail.com

Received: 21 December 2009
Revised: 12 March 2010
Published online: 26 April 2010

Abstract

We consider a broad area heterostructured semiconductor laser with an integrated saturable absorber in a monolithic configuration. We extend beyond the single-longitudinal mode approximation a model already used to predict transversely localized structures or cavity solitons (CSs) in a shorter device and we numerically demonstrate the existence of self-pulsing transverse localized structures. Like CSs, these structures can simultaneously coexist in different transverse locations.