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Influence of nonlinear effects on the characteristics of pulsed high-power broad-area distributed Bragg reflector lasers

  • Anissa Zeghuzi
  • Mindaugas Radziunas
  • Hans-Jürgen Wünsche
  • Andreas Klehr
  • Hans Wenzel
  • Andrea Knigge
Article
Part of the following topical collections:
  1. 2017 Numerical Simulation of Optoelectronic Devices

Abstract

We theoretically analyze the influence of nonlinear effects such as spatial holeburning, two-photon absorption and gain compression on the power–current and beam characteristics of a high-power broad-area distributed Bragg reflector laser with a stripe width of 50 \(\upmu\)m operated in pulsed mode and compare them with simulations of a similar Fabry–Pérot laser. On the one hand, spatial holeburning leads to a higher mean intensity within the cavity for a Fabry–Pérot laser and resulting higher losses in combination with two-photon absorption and gain compression, on the other hand, excitation of higher order lateral modes leads to losses through the Bragg grating. In combination with spatio-temporal power variations resolved by the utilized time-dependent traveling wave model two-photon absorption leads to higher power losses compared to those models using averaged powers.

Keywords

High-power lasers Broad-area lasers DBR lasers Traveling wave model Nonlinear effects Spatial holeburning Two-photon absorption Gain compression 

Notes

Acknowledgements

This work was supported by the German Federal Ministry of Education and Research contract 13N14026 as part of the EffiLAS/PLuS Project.

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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Ferdinand-Braun-Institut, Leibniz-Institut für HöchstfrequenztechnikBerlinGermany
  2. 2.Weierstrass Institute for Applied Analysis and StochasticsBerlinGermany

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