Material-realistic modelling of quantum many-body effects in a monolayer TMDC nanolaser device
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866929585360207872 |
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| author | Buchgeister, Joel Steinhoff, Alexander Erben, Daniel Lorke, Michael Jahnke, Frank |
| author_facet | Buchgeister, Joel Steinhoff, Alexander Erben, Daniel Lorke, Michael Jahnke, Frank |
| contents | The efficient light-matter interaction in combination with the small volume occupied by monolayer transition-metal dichalcogenides (TMDCs) makes this material class a notable option as gain layer in future opto-electronic devices. Many-body effects of excited carriers influence the emission dynamics due to the introduction of optical non-linearities following excitation, but the exact mechanisms remain unexamined from a theoretical point of view. In this paper, we present a material-realistic microscopic theory of a device based on an MoS2-monolayer, which demonstrates stimulated emission activity at room temperature. The modelling procedure combines Coulomb and light-matter interaction matrix elements with doublet-level Quantum Laser Equations (QLEs). These give access to the dynamics of the photon-assisted polarisation, populations, and photon number while allowing the solution of a multi-scale problem ranging from femto- to nanoseconds. The input-output curve, hole burning and spectral clamping obtained from this theory present strong indications of electron-hole-plasma-based lasing occurring at densities above $5 \cdot 10^{13}\,\text{cm}^{-2}$ in this device. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_17857 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Material-realistic modelling of quantum many-body effects in a monolayer TMDC nanolaser device Buchgeister, Joel Steinhoff, Alexander Erben, Daniel Lorke, Michael Jahnke, Frank Materials Science Mesoscale and Nanoscale Physics The efficient light-matter interaction in combination with the small volume occupied by monolayer transition-metal dichalcogenides (TMDCs) makes this material class a notable option as gain layer in future opto-electronic devices. Many-body effects of excited carriers influence the emission dynamics due to the introduction of optical non-linearities following excitation, but the exact mechanisms remain unexamined from a theoretical point of view. In this paper, we present a material-realistic microscopic theory of a device based on an MoS2-monolayer, which demonstrates stimulated emission activity at room temperature. The modelling procedure combines Coulomb and light-matter interaction matrix elements with doublet-level Quantum Laser Equations (QLEs). These give access to the dynamics of the photon-assisted polarisation, populations, and photon number while allowing the solution of a multi-scale problem ranging from femto- to nanoseconds. The input-output curve, hole burning and spectral clamping obtained from this theory present strong indications of electron-hole-plasma-based lasing occurring at densities above $5 \cdot 10^{13}\,\text{cm}^{-2}$ in this device. |
| title | Material-realistic modelling of quantum many-body effects in a monolayer TMDC nanolaser device |
| topic | Materials Science Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2409.17857 |