Excitability in optical systems close to Z(2)-symmetry

Beri, S., Mashall, L., Gelens, L., Van der Sande, G., Mezosi, G., Sorel, M. , Danckaert, J. and Verschaffelt, G. (2010) Excitability in optical systems close to Z(2)-symmetry. Physics Letters A, 374(5), pp. 739-743. (doi: 10.1016/j.physleta.2009.11.070)

Abstract

We report theoretically and experimentally on excitability in semiconductor ring lasers in order to reveal a mechanism of excitability, general for systems close to Z(2)-symmetry. The global shapes of the invariant manifolds of a saddle in the vicinity of a homoclinic loop determine the origin of excitability and the features of the excitable Pulses. We show how to experimentally make a semiconductor ring laser excitable by breaking the Z(2)-symmetry in a controlled way. The experiments confirm the theoretical predictions.

• Item Type: Articles
• Keywords: COHERENCE RESONANCE Excitability fluctuations LASER lasers MECHANISM model noise Nonlinear dynamics optical ring lasers semiconductor Semiconductor ring laser SEMICONDUCTOR RING LASERS SPIKING Stochastic dynamics system
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Mezosi, Mr Gabor and Sorel, Professor Marc
• Authors: Beri, S., Mashall, L., Gelens, L., Van der Sande, G., Mezosi, G., Sorel, M., Danckaert, J., and Verschaffelt, G.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: Physics Letters A
• Publisher: Elsevier BV
• ISSN: 0375-9601
• ISSN (Online): 1873-2429