Multi-junction cascaded vertical-cavity surface-emitting laser with a high power conversion efficiency of 74.

ABSTRACT: High electro-optical conversion efficiency is one of the most distinctive features of semiconductor lasers as compared to other types of lasers. Its further increase remains a significant objective. Further enhancing the efficiency of edge-emitting lasers (EEL), which represent the highest efficiency among semiconductor lasers at present, is challenging. The efficiency of vertical cavity surface emitting lasers (VCSELs) has always been relatively low compared to EEL. This paper, combining modeling with experiments, demonstrates the potential of multi-junction cascaded VCSELs to achieve high efficiency beyond that of EELs, our simulations show, that a 20-junction VCSEL can achieve an efficiency of more than 88% at room temperature. We fabricated VCSEL devices with different numbers of junct

SUBMITTER: Xiao Y 

PROVIDER: S-EPMC10899599 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature