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 transi...
| Main Authors: | , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2019
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/106424 http://hdl.handle.net/10220/48937 |
| _version_ | 1826126132879032320 |
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| author | Liu, Yuanda Fang, Hanlin Abdullah Rasmita Zhou, Yu Li, Juntao Yu, Ting Xiong, Qihua Zheludev, Nikolay Liu, Jin Gao, Weibo |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Liu, Yuanda Fang, Hanlin Abdullah Rasmita Zhou, Yu Li, Juntao Yu, Ting Xiong, Qihua Zheludev, Nikolay Liu, Jin Gao, Weibo |
| author_sort | Liu, Yuanda |
| collection | NTU |
| description | 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 laser works 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. |
| first_indexed | 2024-10-01T06:47:43Z |
| format | Journal Article |
| id | ntu-10356/106424 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:47:43Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/1064242023-02-28T19:26:12Z Room temperature nanocavity laser with interlayer excitons in 2D heterostructures Liu, Yuanda Fang, Hanlin Abdullah Rasmita Zhou, Yu Li, Juntao Yu, Ting Xiong, Qihua Zheludev, Nikolay Liu, Jin Gao, Weibo School of Physical and Mathematical Sciences The Photonics Institute Centre for Disruptive Photonic Technologies (CDPT) DRNTU::Science::Physics Room Temperature Nanocavity Laser 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 laser works 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. NRF (Natl Research Foundation, S’pore) ASTAR (Agency for Sci., Tech. and Research, S’pore) MOE (Min. of Education, S’pore) Published version 2019-06-26T02:42:59Z 2019-12-06T22:11:26Z 2019-06-26T02:42:59Z 2019-12-06T22:11:26Z 2019 Journal Article Liu, Y., Fang, H., Abdullah Rasmita, Zhou, Y., Li, J., Yu, T., . . . Gao, W. (2019). Room temperature nanocavity laser with interlayer excitons in 2D heterostructures. Science Advances, 5(4), eaav4506-. doi:10.1126/sciadv.aav4506 https://hdl.handle.net/10356/106424 http://hdl.handle.net/10220/48937 10.1126/sciadv.aav4506 en Science Advances © 2019 The Author(s). Some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). 5 p. application/pdf |
| spellingShingle | DRNTU::Science::Physics Room Temperature Nanocavity Laser Liu, Yuanda Fang, Hanlin Abdullah Rasmita Zhou, Yu Li, Juntao Yu, Ting Xiong, Qihua Zheludev, Nikolay Liu, Jin Gao, Weibo Room temperature nanocavity laser with interlayer excitons in 2D heterostructures |
| title | Room temperature nanocavity laser with interlayer excitons in 2D heterostructures |
| title_full | Room temperature nanocavity laser with interlayer excitons in 2D heterostructures |
| title_fullStr | Room temperature nanocavity laser with interlayer excitons in 2D heterostructures |
| title_full_unstemmed | Room temperature nanocavity laser with interlayer excitons in 2D heterostructures |
| title_short | Room temperature nanocavity laser with interlayer excitons in 2D heterostructures |
| title_sort | room temperature nanocavity laser with interlayer excitons in 2d heterostructures |
| topic | DRNTU::Science::Physics Room Temperature Nanocavity Laser |
| url | https://hdl.handle.net/10356/106424 http://hdl.handle.net/10220/48937 |
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