Abstract
We show how VCSELs with elongated shapes of the emission area can achieve higher output powers and wall-plug efficiency compared to standard circular or quadratic VCSELs. We identified an improved homogeneity of the carrier concentration in the quantum wells as well as a reduced thermal resistance as the main reasons for the better performance of the rectangular shaped VCSELs presented in this article.
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Gronenborn, S., Pollmann-Retsch, J., Pekarski, P. et al. High-power VCSELs with a rectangular aperture. Appl. Phys. B 105, 783–792 (2011). https://doi.org/10.1007/s00340-011-4593-1
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DOI: https://doi.org/10.1007/s00340-011-4593-1