Pulse-doubling perovskite nanowire lasers enabled by phonon-assisted multistep energy funneling

Chunhu Zhao; Jia Guo; Jiahua Tao; Junhao Chu; Shaoqiang Chen; Guichuan Xing

doi:10.1038/s41377-024-01494-2

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Pulse-doubling perovskite nanowire lasers enabled by phonon-assisted multistep energy funneling

Original Articles

- Pulse-doubling perovskite nanowire lasers enabled by phonon-assisted multistep energy funneling
- Pulse-doubling perovskite nanowire lasers enabled by phonon-assisted multistep energy funneling
- LSA 2024年13卷第8期页码：1645-1654
- Affiliations：
  
  1.Hunan Provincial Key Laboratory of Carbon Neutrality and Intelligent Energy, School of Resource & Environment, Hunan University of Technology and Business, 410205 Changsha, China
  2.Engineering Research Center for Nanophotonics and Advanced Instrument, Ministry of Education, School of Physics and Electronic Science, East China Normal University, 200241 Shanghai, China
  3.Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, 999078 Macau, China
- Author bio：
  
  Jiahua Tao (jhtao@phy.ecnu.edu.cn)
  Shaoqiang Chen (sqchen@ee.ecnu.edu.cn)
  Guichuan Xing (gcxing@um.edu.mo)
- Funds：
- DOI：10.1038/s41377-024-01494-2
  中图分类号：
- 收稿日期：2024-01-15，
  
  修回日期：2024-05-01，
  
  录用日期：2024-05-24，
  
  网络出版日期：2024-07-17，
  
  纸质出版日期：2024-08-31
- Accepted：
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Pulse-doubling perovskite nanowire lasers enabled by phonon-assisted multistep energy funneling[J]. LSA, 2024,13(8):1645-1654.

Zhao, C. H. et al. Pulse-doubling perovskite nanowire lasers enabled by phonon-assisted multistep energy funneling. Light: Science & Applications, 13, 1645-1654 (2024).
Pulse-doubling perovskite nanowire lasers enabled by phonon-assisted multistep energy funneling[J]. LSA, 2024,13(8):1645-1654. DOI： 10.1038/s41377-024-01494-2.

Zhao, C. H. et al. Pulse-doubling perovskite nanowire lasers enabled by phonon-assisted multistep energy funneling. Light: Science & Applications, 13, 1645-1654 (2024). DOI： 10.1038/s41377-024-01494-2.

摘要

Abstract

Laser pulse multiplication from an optical gain medium has shown great potential in miniaturizing integrated optoelectronic devices. Perovskite multiple quantum wells (MQWs) structures have recently been recognized as an effective gain media capable of doubling laser pulses that do not rely on external optical equipment. Although the light amplifications enabled with pulse doubling are reported based on the perovskite MQWs thin films

the micro-nanolasers possessed a specific cavity for laser pulse multiplication and their corresponding intrinsic l

aser dynamics are still inadequate. Herein

a single-mode double-pulsed nanolaser from self-assembled perovskite MQWs nanowires is realized

exhibiting a pulse duration of 28 ps and pulse interval of 22 ps based on single femtosecond laser pulse excitation. It is established that the continuous energy building up within a certain timescale is essential for the multiple population inversion in the gain medium

which arises from the slowing carrier localization process owning to the stronger exciton–phonon coupling in the smaller-

QWs. Therefore

the double-pulsed lasing is achieved from one fast energy funnel process from the adjacent small-

QWs to gain active region and another slow process from the spatially separated ones. This report may shed new light on the intrinsic energy relaxation mechanism and boost the further development of perovskite multiple-pulse lasers.

关键词

Keywords

references

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