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Proceedings Paper

Cavity solitons in driven VCSELS above threshold
Author(s): Giovanna Tissoni; Igor Protsenko; Reza Kheradmand; Franco Prati; Massimo Brambilla; Luigi A. Lugiato
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Paper Abstract

CSs have been theoretically predicted and recently experimentally demonstrated in broad area, vertical cavity, driven semiconductor lasers (VCSELs) slightly below the lasing threshold. Above threshold, the simple adiabatic elimination of the polarization variable is not correct, leading to oscillatory instabilities with a spuriously high critical wave-number. To achieve real insight on the complete dynamical problem, we study here the complete system of equations and find regimes where a Hopf instability, typical of lasers above threshold, affects the lower intensity branch of the homogeneous steady state, while the higher intensity branch is unstable due to a Turing instability. Numerical results obtained by direct integration of the dynamical equations show that writable/erasable CSs are possible in this regime, sitting on unstable background.

Paper Details

Date Published: 1 September 2004
PDF: 9 pages
Proc. SPIE 5452, Semiconductor Lasers and Laser Dynamics, (1 September 2004); doi: 10.1117/12.544775
Show Author Affiliations
Giovanna Tissoni, Univ. degli Studi dell'Insubria (Italy)
INFM (Italy)
Igor Protsenko, Lebedev Physics Institute (Russia)
Reza Kheradmand, INFM, Univ. degli Studi dell'Insubria (Italy)
Univ. of Tabriz (Iran)
Franco Prati, Univ. degli Studi dell'Insubria (Italy)
Massimo Brambilla, Politecnico di Bari (Italy)
INFM (Italy)
Luigi A. Lugiato, INFM, Univ. degli Studi dell'Insubria (Italy)

Published in SPIE Proceedings Vol. 5452:
Semiconductor Lasers and Laser Dynamics
Daan Lenstra; Geert Morthier; Thomas Erneux; Markus Pessa, Editor(s)

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