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9 March 2022 Emitted power enhancement of VCSELs by shape deformation of oxide aperture
Adam Brejnak, Marcin Gebski, Magdalena Marciniak, Mariusz Drong, Kamil Postava, Tibor Fördös, Michal Wasiak, Jan Muszalski, James A. Lott, Ingo Fischer, Tomasz G. Czyszanowski
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Proceedings Volume PC12020, Vertical-Cavity Surface-Emitting Lasers XXVI; PC1202006 (2022) https://doi.org/10.1117/12.2610642
Event: SPIE OPTO, 2022, San Francisco, California, United States
Abstract
We experimentally demonstrate that circular oxide apertures with small side deformations of large-area 980 nm VCSELs contribute to an increase in the optical output power by more than 60% and in the quantum efficiency by more than 10%. We elaborate on the physical background of this behavior and its applicability to small aperture VCSELs. We show that the efficiency of stimulated emission can be enhanced by engineering the spectral structure of the resonator. Such an approach is used already to enhance spontaneous emission,but has been left unexplored in the context of the stimulated emission of VCSELs.
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Adam Brejnak, Marcin Gebski, Magdalena Marciniak, Mariusz Drong, Kamil Postava, Tibor Fördös, Michal Wasiak, Jan Muszalski, James A. Lott, Ingo Fischer, and Tomasz G. Czyszanowski "Emitted power enhancement of VCSELs by shape deformation of oxide aperture", Proc. SPIE PC12020, Vertical-Cavity Surface-Emitting Lasers XXVI, PC1202006 (9 March 2022); https://doi.org/10.1117/12.2610642
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KEYWORDS
Vertical cavity surface emitting lasers
Oxides
Quantum efficiency
Optical resonators
Quantum electrodynamics
Structural engineering
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