Research Repository

Effects of detuning, gain-guiding, and index antiguiding on the dynamics of two laterally coupled semiconductor lasers

Adams, MJ and Li, N and Cemlyn, BR and Susanto, H and Henning, ID (2017) 'Effects of detuning, gain-guiding, and index antiguiding on the dynamics of two laterally coupled semiconductor lasers.' Physical Review A, 95 (5). ISSN 1050-2947

[img]
Preview
Text
PhysRevA.95.053869.pdf - Published Version

Download (1MB) | Preview

Abstract

Four examples of laterally coupled semiconductor lasers with different waveguiding structures have been studied using coupled mode theory and allowing for frequency detuning between the lasers. The structures include purely real index guiding, pure gain-guiding, and combinations of index guiding and antiguiding with gain-guiding. The dynamics of these four systems have been explored using AUTO software (standard numerical continuation package), linear stability analysis, and direct integration of the rate equations. Convincing agreement between results obtained by these three methods has been demonstrated, including effects due to variation of laser pumping rate, detuning, and linewidth enhancement factor. A periodicity of behavior with laser separation has been revealed that was previously overlooked. This periodicity has increasing influence on the bifurcations of the system as the structures develop from those with purely real guidance to a combination of index antiguiding and gain-guiding. The laser design and operating parameters used are realistic for a wide range of edge-emitting and surface-emitting lasers of practical importance, so that the dynamics studied here are relevant to real systems of coupled lasers.

Item Type: Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science and Health > Computer Science and Electronic Engineering, School of
Faculty of Science and Health > Mathematical Sciences, Department of
Depositing User: Elements
Date Deposited: 05 Sep 2017 14:33
Last Modified: 05 Sep 2017 14:33
URI: http://repository.essex.ac.uk/id/eprint/20323

Actions (login required)

View Item View Item