Mastering Lateral Radiation Losses in Tunable VCSELs

This paper deals with the loss mechanisms in tunable vertical-cavity surface-emitting lasers (VCSELs). The strong increase of the threshold gain at the tuning range edges motivates the investigation of the degradation mechanisms presented in this paper. A campaign of simulations performed with our i...

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Bibliographic Details
Published in:IEEE journal of quantum electronics 2019-02, Vol.55 (1), p.1-8
Main Authors: Debernardi, Pierluigi, Tibaldi, Alberto, Orta, Renato
Format: Article
Language:English
Subjects:
Air gaps
Atmospheric modeling
Cavity resonators
diffraction
Distributed Bragg reflectors
lateral radiation losses
Mastering
scattering losses
Tunable VCSELs
Tuning
Vertical cavity surface emission lasers
Vertical cavity surface emitting lasers
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Summary:This paper deals with the loss mechanisms in tunable vertical-cavity surface-emitting lasers (VCSELs). The strong increase of the threshold gain at the tuning range edges motivates the investigation of the degradation mechanisms presented in this paper. A campaign of simulations performed with our in-house VCSEL ELectroMagnetic (VELM) simulation code, combined with a novel approach based on the study of the Poynting vector, allowed to identify significant lateral radiation losses. The proposal of technology-affordable countermeasures rests on the proper understanding of these phenomena.
ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.2018.2887279