Evaluating Two-Photon Absorption Effects on Pulsed High-Power Laser Operation

The influence of two-photon absorption (2PA) on the pulse power saturation of GaAs-based lasers is investigated and compared to other loss mechanisms. Our numerical model self-consistently solves the drift-diffusion equations and the waveguide equations for a broad-area Fabry-Perot laser diode. Usin...

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Bibliographic Details
Published in2018 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD) pp. 89 - 90
Main Authors Piprek, Joachim, Li, Z. M.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.11.2018
Subjects
Absorption
Laser modes
Mathematical model
numerical analysis
Optical waveguides
Power lasers
Semiconductor lasers
Waveguide lasers
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Summary:The influence of two-photon absorption (2PA) on the pulse power saturation of GaAs-based lasers is investigated and compared to other loss mechanisms. Our numerical model self-consistently solves the drift-diffusion equations and the waveguide equations for a broad-area Fabry-Perot laser diode. Using common absorption parameters, we find that 2PA makes a much smaller contribution to the power saturation than free-carrier absorption (FCA). FCA is mainly caused by carrier leakage from the quantum wells while 2PA-generated carriers are of minor importance.
ISSN:2158-3242
DOI:10.1109/NUSOD.2018.8570224