Room-temperature continuous-wave lasing from monolayer molybdenum ditelluride integrated with a silicon nanobeam cavity

Yongzhuo Li, Jianxing Zhang, Dandan Huang, Hao Sun, Fan Fan, Jiabin Feng, Zhen Wang, Cun-Zheng Ning

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

Monolayer transition-metal dichalcogenides (TMDs) have the potential to become efficient optical-gain materials for low-energy-consumption nanolasers with the smallest gain media because of strong excitonic emission. However, until now TMD-based lasing has been realized only at low temperatures. Here we demonstrate for the first time a room-temperature laser operation in the infrared region from a monolayer of molybdenum ditelluride on a silicon photonic-crystal cavity. The observation is enabled by the unique combination of a TMD monolayer with an emission wavelength transparent to silicon, and a high-Q cavity of the silicon nanobeam. The laser is pumped by a continuous-wave excitation, with a threshold density of 6.6 cm-2. Its linewidth is as narrow as 0.202 nm with a corresponding Q of 5,603, the largest value reported for a TMD laser. This demonstration establishes TMDs as practical materials for integrated TMD-silicon nanolasers suitable for silicon-based nanophotonic applications in silicon-transparent wavelengths.

Original languageEnglish (US)
Pages (from-to)987-992
Number of pages6
JournalNature Nanotechnology
Volume12
Issue number10
DOIs
StatePublished - Oct 1 2017

Fingerprint

Molybdenum
Silicon
molybdenum
continuous radiation
Transition metals
lasing
Monolayers
transition metals
cavities
silicon
room temperature
Temperature
Lasers
lasers
Nanophotonics
Optical gain
Wavelength
wave excitation
energy consumption
Photonic crystals

ASJC Scopus subject areas

  • Bioengineering
  • Atomic and Molecular Physics, and Optics
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Room-temperature continuous-wave lasing from monolayer molybdenum ditelluride integrated with a silicon nanobeam cavity. / Li, Yongzhuo; Zhang, Jianxing; Huang, Dandan; Sun, Hao; Fan, Fan; Feng, Jiabin; Wang, Zhen; Ning, Cun-Zheng.

In: Nature Nanotechnology, Vol. 12, No. 10, 01.10.2017, p. 987-992.

Research output: Contribution to journalArticle

Li, Yongzhuo ; Zhang, Jianxing ; Huang, Dandan ; Sun, Hao ; Fan, Fan ; Feng, Jiabin ; Wang, Zhen ; Ning, Cun-Zheng. / Room-temperature continuous-wave lasing from monolayer molybdenum ditelluride integrated with a silicon nanobeam cavity. In: Nature Nanotechnology. 2017 ; Vol. 12, No. 10. pp. 987-992.
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