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

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

doi:10.1038/s41377-024-01403-7

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

Original Articles

- Multi-junction cascaded vertical-cavity surface-emitting laser with a high power conversion efficiency of 74%
- Light: Science & Applications Vol. 13, Issue 3, Pages: 555-565(2024)
- Affiliations：
  
  1.College of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China
  2.Suzhou Everbright Photonics Co., Ltd, Suzhou 215163, China
- Author bio：
  
  Jun Wang (wjdz@scu.edu.cn)
- Funds：
- DOI：10.1038/s41377-024-01403-7
  CLC：
- Received：25 December 2023，
  
  Revised：16 January 2024，
  
  Accepted：2024-01-30，
  
  Published Online：28 February 2024，
  
  Published：31 March 2024
- Accepted：
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Xiao, Y. et al. Multi-junction cascaded vertical-cavity surface-emitting laser with a high power conversion efficiency of 74%. Light: Science & Applications, 13, 555-565 (2024).
DOI：

Xiao, Y. et al. Multi-junction cascaded vertical-cavity surface-emitting laser with a high power conversion efficiency of 74%. Light: Science & Applications, 13, 555-565 (2024). DOI： 10.1038/s41377-024-01403-7.

摘要

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.

关键词

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references

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