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Room temperature nanocavity laser with interlayer excitons in 2D heterostructures

Room temperature nanocavity laser with interlayer excitons in 2D heterostructures
Room temperature nanocavity laser with interlayer excitons in 2D heterostructures
Atomically thin layered two-dimensional (2D) materials have provided a rich library for both fundamental research and device applications. Bandgap engineering and controlled material response can be achieved from artificial heterostructures. Recently, excitonic lasers have been reported using transition metal dichalcogenides; however, the emission is still the intrinsic energy bandgap of the monolayers. Here, we report a room temperature interlayer exciton laser with MoS2/WSe2 heterostructures. The onset of lasing was identified by the distinct kink in the “L-L” curve and the noticeable spectral linewidth collapse. Different from visible emission of intralayer excitons in monolayer components, our laserworks in the infrared range, which is fully compatible with the well-established technologies in silicon photonics. Long lifetime of interlayer excitons relaxes the requirement of the cavity quality factor by orders of magnitude. Room temperature interlayer exciton lasers might open new perspectives for developing coherent light sources with tailored optical properties on silicon photonics platforms.
2375-2548
1-5
Liu, Yuanda
a1f290b4-b6f3-4262-9e6d-d78c6d1fd48f
Fang, Hanlin
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Rasmita, Abdullah
fc85bd2f-293c-407f-aa40-88bb385a9953
Zhou, Yu
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Li, Juntao
8f50dd0a-481e-478c-995a-40b284473640
Yu, Ting
5c7a4f6e-cc92-4b62-b43a-40f06b6212d4
Xiong, Qihua
f5abe08d-5bb7-4bd5-b9e4-cdc5b3a1093b
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
Liu, Jin
3d7dc193-ccff-42de-9b7c-20a39781eb2d
Gao, Weibo
215e014c-7a9c-429a-8b41-42fe2513171b
Liu, Yuanda
a1f290b4-b6f3-4262-9e6d-d78c6d1fd48f
Fang, Hanlin
5f359113-fc9a-474a-8c8c-9149eec99047
Rasmita, Abdullah
fc85bd2f-293c-407f-aa40-88bb385a9953
Zhou, Yu
28ed56a3-d1b7-4e6c-8033-4df61e37ab95
Li, Juntao
8f50dd0a-481e-478c-995a-40b284473640
Yu, Ting
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Xiong, Qihua
f5abe08d-5bb7-4bd5-b9e4-cdc5b3a1093b
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
Liu, Jin
3d7dc193-ccff-42de-9b7c-20a39781eb2d
Gao, Weibo
215e014c-7a9c-429a-8b41-42fe2513171b

Liu, Yuanda, Fang, Hanlin, Rasmita, Abdullah, Zhou, Yu, Li, Juntao, Yu, Ting, Xiong, Qihua, Zheludev, Nikolai, Liu, Jin and Gao, Weibo (2019) Room temperature nanocavity laser with interlayer excitons in 2D heterostructures. Science Advances, 5 (4), 1-5, [eaav4506]. (doi:10.1126/sciadv.aav4506).

Record type: Article

Abstract

Atomically thin layered two-dimensional (2D) materials have provided a rich library for both fundamental research and device applications. Bandgap engineering and controlled material response can be achieved from artificial heterostructures. Recently, excitonic lasers have been reported using transition metal dichalcogenides; however, the emission is still the intrinsic energy bandgap of the monolayers. Here, we report a room temperature interlayer exciton laser with MoS2/WSe2 heterostructures. The onset of lasing was identified by the distinct kink in the “L-L” curve and the noticeable spectral linewidth collapse. Different from visible emission of intralayer excitons in monolayer components, our laserworks in the infrared range, which is fully compatible with the well-established technologies in silicon photonics. Long lifetime of interlayer excitons relaxes the requirement of the cavity quality factor by orders of magnitude. Room temperature interlayer exciton lasers might open new perspectives for developing coherent light sources with tailored optical properties on silicon photonics platforms.

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More information

Accepted/In Press date: 7 March 2019
e-pub ahead of print date: 26 April 2019
Published date: 26 April 2019

Identifiers

Local EPrints ID: 431472
URI: http://eprints.soton.ac.uk/id/eprint/431472
ISSN: 2375-2548
PURE UUID: d514a06d-4cd9-4bd5-985f-80945e77b94b
ORCID for Nikolai Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 05 Jun 2019 16:30
Last modified: 26 Nov 2021 02:36

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Contributors

Author: Yuanda Liu
Author: Hanlin Fang
Author: Abdullah Rasmita
Author: Yu Zhou
Author: Juntao Li
Author: Ting Yu
Author: Qihua Xiong
Author: Jin Liu
Author: Weibo Gao

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