Issue 10, 2021

An electrically driven whispering gallery polariton microlaser

Abstract

Near-infrared micro/nanolaser devices utilizing low-dimensional semiconductors can provide essential building blocks to achieve integrated optoelectronic devices and circuitry for advanced functionalities and are compatible with on-chip technologies. Although significant progress has been made through using narrow-band semiconductor micro/nanostructures to realize near-infrared stimulated radiation at room temperature, severe challenges still remain involving much lower quantum efficiencies and higher auger recombination. Herein, we report an experimental realization of a current-injection semiconductor polariton device made of a ZnO microwire via Ga-doping (ZnO:Ga MW) and p-type GaAs template. The device can emit polaritonic illumination directly from sharp edges of the hexagonal MW. The experimental results of angle-resolved electroluminescence measurements reveal a typical anticrossing feature between excitons and cavity modes, unambiguous evidence of the strong exciton–polariton coupling, with corresponding Rabi splitting energy extracted to be about 195 meV. As the applied bias goes above a certain value, electrically driven whispering gallery lasing action was achieved in the near-infrared spectrum, and the lasing features can be assigned to the exciton–polariton effect. The results not only can afford insights into the development of low-threshold coherent light sources via the exciton–polariton effect, but also can expand the fabrication of low-dimensional, near-infrared microlaser devices.

Graphical abstract: An electrically driven whispering gallery polariton microlaser

Article information

Article type
Paper
Submitted
17 Nov 2020
Accepted
15 Feb 2021
First published
16 Feb 2021

Nanoscale, 2021,13, 5448-5459

An electrically driven whispering gallery polariton microlaser

M. Jiang, P. Wan, K. Tang, M. Liu and C. Kan, Nanoscale, 2021, 13, 5448 DOI: 10.1039/D0NR08168J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements