Effective Numerical Algorithm for Simulations of Beam Stabilization in Broad Area Semiconductor Lasers and Amplifiers

• Published in: Mathematical modelling and analysis Vol. 19; no. 5; pp. 627 - 646
• Main Authors: Radziunas, Mindaugas, Čiegis, Raimondas
• Format: Journal Article
• Language: English
• Published: Taylor & Francis 01.11.2014; Vilnius Gediminas Technical University
• Subjects: Algorithms; beam improvement; Beams (radiation); broad area device; Computation; Computer simulation; Devices; Dynamical systems; Dynamics; Electric properties; Laser beams; Mathematical models; Methods; numerical scheme; Observations; parallel algorithm; Semiconductor lasers; simulation; Structural optimization; traveling wave model; broad area device; traveling wave model; parallel algorithm; simulation; numerical scheme; beam improvement
• ISSN: 1392-6292; 1648-3510
• DOI: 10.3846/13926292.2014.979453

A 2 + 1 dimensional PDE traveling wave model describing spatial-lateral dynamics of edge-emitting broad area semiconductor devices is considered. A numerical scheme based on a split-step Fourier method is presented. The domain decomposition method is used to parallelize the sequential algorithm. The parallel algorithm is implemented by using Message Passing Interface system, results of computational experiments are presented and the scalability of the algorithm is analyzed. Simulations of the model equations are used for optimizing of existing devices with respect to the emitted beam quality, as well as for creating and testing of novel device design concepts.