Modeling of multi-mode properties in high-power VCSELs

Maciej Dems, Piotr Beling, Marcin Gębski, Łukasz Piskorski, Maciej Kuc, Michał Wasiak, Robert Sarzała

15th International Conference on Transparent Optical Networks (ICTON), Cartagena, Spain, doi: 10.1109/ICTON.2013.6602733

In the talk a new automated and self-consistent approach to modeling photonic devices is presented. Is is based on a new software being developed at Lodz University of Technology and its main idea is automated consideration of mutual interactions between various physical phenomena taking place in photonic devices.

Abstract

For many applications of Vertical-Cavity Surface-Emitting Lasers (VCSELs) it is important to obtain high power of emitted light. Due to the laser thermal properties that limit maximum current density in the active region, high power emission requires large laser apertures. This results in appearance of multiple transverse optical modes, which very often are undesirable. In the talk we present important aspects of modeling these modes with advanced self-consistent software and we will also show some propositions of possible measures that can be taken to increase modal selectivity and reduce number of modes. We illustrate these general concepts with examples of modeling gallium-nitride VCSELs.

Bibtex

@INPROCEEDINGS{7193495,
  author={Maciej Dems and Piotr Beling and Marcin Gębski and Łukasz Piskorski and Maciej Kuc and Michał Wasiak and Magdalena Marciniak and Patrycja Śpiewak and Marta Więckowska and Robert P. Sarzala},
  booktitle={2015 17th International Conference on Transparent Optical Networks (ICTON)}, 
  title={Modeling of multi-mode properties in high-power VCSELs}, 
  year={2015},
  pages={1-4},
  abstract={For many applications of Vertical-Cavity Surface-Emitting Lasers (VCSELs) it is important to obtain high power of emitted light. Due to the laser thermal properties that limit maximum current density in the active region, high power emission requires large laser apertures. This results in appearance of multiple transverse optical modes, which very often are undesirable. In the talk we present important aspects of modeling these modes with advanced self-consistent software and we will also show some propositions of possible measures that can be taken to increase modal selectivity and reduce number of modes. We illustrate these general concepts with examples of modeling gallium-nitride VCSELs.},
  doi={10.1109/ICTON.2015.7193495},
  ISSN={2161-2064},
  month={July}}