28 April 2016 VCSELs with optically controlled current confinement: experiments and analysis
Author Affiliations +
Abstract
We have devised a novel oxide-free and regrowth-free approach for optically controlled current confinement in vertical-cavity surface-emitting lasers (VCSELs). This is realized with a monolithically integrated phototransistor (PT), which is configured as an optical switch and embedded between the two Bragg reflectors. We have fabricated functional PT-VCSELs by one-step epitaxial growth plus metal deposition with different top contact sizes. We present light–current–voltage characteristics of the lasers as well as a simple theoretical model explaining the occurrence of a distinct turn-on point and clarify epitaxial design requirements to reach strong optically controlled current confinement.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Sven Bader, Sven Bader, Philipp Gerlach, Philipp Gerlach, Rainer Michalzik, Rainer Michalzik, "VCSELs with optically controlled current confinement: experiments and analysis", Proc. SPIE 9892, Semiconductor Lasers and Laser Dynamics VII, 989208 (28 April 2016); doi: 10.1117/12.2228090; https://doi.org/10.1117/12.2228090
PROCEEDINGS
6 PAGES


SHARE
Back to Top