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| Auteurs principaux: | , , , , , , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2023
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| Accès en ligne: | https://arxiv.org/abs/2311.12381 |
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| _version_ | 1866929243987902464 |
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| author | Song, Jiepeng Ghosh, Sanjib Deng, Xinyi Shang, Qiuyu Liu, Xinfeng Wang, Yubin Gao, Xiaoyue Yang, Wenkai Wang, Xianjin Zhao, Qing Shi, Kebin Gao, Peng Xiong, Qihua Zhang, Qing |
| author_facet | Song, Jiepeng Ghosh, Sanjib Deng, Xinyi Shang, Qiuyu Liu, Xinfeng Wang, Yubin Gao, Xiaoyue Yang, Wenkai Wang, Xianjin Zhao, Qing Shi, Kebin Gao, Peng Xiong, Qihua Zhang, Qing |
| contents | Microcavity exciton polaritons (polaritons) as part-light part-matter quasiparticles, garner significant attention for non-equilibrium Bose-Einstein condensation at elevated temperatures. Recently, halide perovskites have emerged as promising room-temperature polaritonic platforms thanks to their large exciton binding energies and superior optical properties. However, currently, inducing room-temperature non-equilibrium polariton condensation in perovskite microcavities requires optical pulsed excitations with high excitation densities. Herein, we demonstrate continuous-wave optically pumped polariton condensation with an exceptionally low threshold of ~0.6 W cm-2 and a narrow linewidth of ~1 meV. Polariton condensation is unambiguously demonstrated by characterizing the nonlinear behavior and coherence properties. We also identify a microscopic mechanism involving the potential landscape in the perovskite microcavity, where numerous discretized energy levels arising from the hybridization of adjacent potential minima enhance the polariton relaxation, facilitating polariton condensate formation. Our findings lay the foundation for the next-generation energy-efficient polaritonic devices operating at room temperature. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_12381 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Room-temperature continuous-wave pumped exciton polariton condensation in a perovskite microcavity Song, Jiepeng Ghosh, Sanjib Deng, Xinyi Shang, Qiuyu Liu, Xinfeng Wang, Yubin Gao, Xiaoyue Yang, Wenkai Wang, Xianjin Zhao, Qing Shi, Kebin Gao, Peng Xiong, Qihua Zhang, Qing Optics Mesoscale and Nanoscale Physics Materials Science Microcavity exciton polaritons (polaritons) as part-light part-matter quasiparticles, garner significant attention for non-equilibrium Bose-Einstein condensation at elevated temperatures. Recently, halide perovskites have emerged as promising room-temperature polaritonic platforms thanks to their large exciton binding energies and superior optical properties. However, currently, inducing room-temperature non-equilibrium polariton condensation in perovskite microcavities requires optical pulsed excitations with high excitation densities. Herein, we demonstrate continuous-wave optically pumped polariton condensation with an exceptionally low threshold of ~0.6 W cm-2 and a narrow linewidth of ~1 meV. Polariton condensation is unambiguously demonstrated by characterizing the nonlinear behavior and coherence properties. We also identify a microscopic mechanism involving the potential landscape in the perovskite microcavity, where numerous discretized energy levels arising from the hybridization of adjacent potential minima enhance the polariton relaxation, facilitating polariton condensate formation. Our findings lay the foundation for the next-generation energy-efficient polaritonic devices operating at room temperature. |
| title | Room-temperature continuous-wave pumped exciton polariton condensation in a perovskite microcavity |
| topic | Optics Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2311.12381 |