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Proceedings Paper

Two-dimensional model of self-pulsation in AlGaAs laser diodes
Author(s): Canice O'Brien; Woon-Ho Seo; Heidi K. Thornquist; John F. Donegan
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Paper Abstract

The use of a fully two-dimensional waveguide analysis of the optical modes in a self-pulsating laser is described. We show that there is a need for such an analysis as the effective index model often used for modeling semiconductor lasers is shown not to provide a correct optical mode when the lateral waveguide is only weakly guiding. An efficient technique for solving the large and sparse matrix calculation in the two-dimensional model, the implicitly restarted Arnoldi method, is used and shown to be useful for the repetitive calculation necessary to describe the laser dynamics. We find that the optical field and optical gain show a variation in the pulse cycle and that this variation that occurs due to the change in carrier density, is responsible for the development of self-pulsation in the diode device.

Paper Details

Date Published: 1 September 2004
PDF: 8 pages
Proc. SPIE 5452, Semiconductor Lasers and Laser Dynamics, (1 September 2004); doi: 10.1117/12.545359
Show Author Affiliations
Canice O'Brien, Trinity College Dublin (Ireland)
Woon-Ho Seo, Sungkyunkwan Univ. (South Korea)
Heidi K. Thornquist, Sandia National Labs. (United States)
John F. Donegan, Trinity College Dublin (Ireland)

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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