Meng, X;
Grote, RR;
Jin, W;
Dadap, JI;
Panoiu, NC;
Osgood, RM;
(2016)
Rigorous theoretical analysis of a surface-plasmon nanolaser with monolayer MoS2 gain medium.
Optics Letters
, 41
(11)
pp. 2636-2639.
10.1364/OL.41.002636.
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Abstract
Lasers based on monolayer (ML) transition-metal dichalcogenide semiconductor crystals have the potential for low threshold operation and a small device footprint; however, nanophotonic engineering is required to maximize the interaction between the optical fields and the three-atom-thick gain medium. Here, we develop a theoretical model to design a direct bandgap optically pumped nanophotonic integrated laser. Our device utilizes a gap-surface-plasmon optical mode to achieve subwavelength optical confinement and consists of a high-index GaP nanowire atop an ML MoS2 film on an Ag substrate. The optical field and material medium are analyzed using a three dimensional finite-difference time-domain method and a first-principles calculation based on the density functional theory, respectively. The nanolaser is designed to have a threshold of ∼0.6 μW under quasi-continuous wave operation on an excitonic transition at room temperature.
| Type: | Article |
|---|---|
| Title: | Rigorous theoretical analysis of a surface-plasmon nanolaser with monolayer MoS2 gain medium |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1364/OL.41.002636 |
| Publisher version: | https://doi.org/10.1364/OL.41.002636 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10055780 |
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