TY - JOUR
T1 - Room-temperature continuous-wave lasing from monolayer molybdenum ditelluride integrated with a silicon nanobeam cavity
AU - Li, Yongzhuo
AU - Zhang, Jianxing
AU - Huang, Dandan
AU - Sun, Hao
AU - Fan, Fan
AU - Feng, Jiabin
AU - Wang, Zhen
AU - Ning, Cun-Zheng
N1 - Funding Information:
This research is supported by the 985 University Project of China and Tsinghua University Initiative Scientific Research Program (No. 20141081296). The authors thank Y. Huang for the usage of their fabrication equipment.
Publisher Copyright:
© 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.
PY - 2017/10/1
Y1 - 2017/10/1
N2 - 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.
AB - 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.
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U2 - 10.1038/nnano.2017.128
DO - 10.1038/nnano.2017.128
M3 - Article
C2 - 28737750
AN - SCOPUS:85030756445
VL - 12
SP - 987
EP - 992
JO - Nature Nanotechnology
JF - Nature Nanotechnology
SN - 1748-3387
IS - 10
ER -