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

IF 19.4 1区物理与天体物理 Q1 Physics and Astronomy Light, science & applications Pub Date : 2024-02-28 DOI:10.1038/s41377-024-01403-7

Yao Xiao, Jun Wang, Heng Liu, Pei Miao, Yudan Gou, Zhicheng Zhang, Guoliang Deng, Shouhuan Zhou

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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 junctions and compared their energy efficiency. 15-junction VCSELs achieved a maximum efficiency of 74% at room temperature under nanosecond driving current, the corresponding differential quantum efficiency exceeds 1100%, being the largest electro-optical conversion efficiency and differential quantum efficiency reported until now for VCSELs.

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功率转换效率高达 74 的多结级联垂直腔表面发射激光器。

与其他类型的激光器相比，高电光转换效率是半导体激光器最显著的特点之一。进一步提高其效率仍然是一个重要目标。目前，半导体激光器中效率最高的是边缘发射激光器（EEL），进一步提高边缘发射激光器的效率是一项挑战。与边缘发射激光器相比，垂直腔面发射激光器（VCSEL）的效率一直相对较低。本文将建模与实验相结合，证明了多结级联 VCSEL 在实现超越 EEL 的高效率方面的潜力，我们的模拟显示，20 结 VCSEL 在室温下的效率可达 88% 以上。我们制造了具有不同结数的 VCSEL 器件，并比较了它们的能效。在室温下，15 结 VCSEL 在纳秒级驱动电流的作用下实现了 74% 的最高效率，相应的微分量子效率超过 1100%，是迄今为止 VCSEL 的最大电光转换效率和微分量子效率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Light, science & applications OPTICS-

CiteScore

27.00

自引率

2.60%

发文量

331

审稿时长

20 weeks

期刊介绍： Light: Science & Applications is an open-access, fully peer-reviewed publication.It publishes high-quality optics and photonics research globally, covering fundamental research and important issues in engineering and applied sciences related to optics and photonics.