Giant All-Optical Modulation of Second-Harmonic Generation Mediated by Dark Excitons
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- Yadong Wang
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi’an 710129, China
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- Susobhan Das
- Department of Electronics and Nanoengineering, Aalto University, Espoo 02150, Finland
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- Fadil Iyikanat
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain
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- Yunyun Dai
- Department of Electronics and Nanoengineering, Aalto University, Espoo 02150, Finland
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- Shisheng Li
- International Center for Young Scientists, National Institute for Materials Science, Tsukuba 305-0044, Japan
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- Xiangdong Guo
- CAS Key Laboratory of Nanophotonic Materials and Devices, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
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- Xiaoxia Yang
- CAS Key Laboratory of Nanophotonic Materials and Devices, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
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- Jinluo Cheng
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China
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- Xuerong Hu
- Department of Electronics and Nanoengineering, Aalto University, Espoo 02150, Finland
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- Masood Ghotbi
- Department of Physics, University of Kurdistan, Pasdaran St., Sanandaj 66177-15177, Iran
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- Fangwei Ye
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
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- Harri Lipsanen
- Department of Electronics and Nanoengineering, Aalto University, Espoo 02150, Finland
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- Shiwei Wu
- State Key Laboratory of Surface Physics, Key Laboratory of Micro and Nano Photonic Structures (MOE), and Department of Physics, Fudan University, Shanghai 200433, China
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- Tawfique Hasan
- Cambridge Graphene Centre, University of Cambridge, Cambridge CB3 0FA, United Kingdom
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- Xuetao Gan
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi’an 710129, China
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- Kaihui Liu
- State Key Laboratory for Mesoscopic Physics and School of Physics, Peking University, Beijing 100871, China
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- Dong Sun
- International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China
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- Qing Dai
- CAS Key Laboratory of Nanophotonic Materials and Devices, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
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- F. Javier García de Abajo
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain
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- Jianlin Zhao
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi’an 710129, China
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- Zhipei Sun
- Department of Electronics and Nanoengineering, Aalto University, Espoo 02150, Finland
説明
All-optical control of nonlinear photonic processes in nanomaterials is of significant interest from a fundamental viewpoint and with regard to applications ranging from ultrafast data processing to spectroscopy and quantum technology. However, these applications rely on a high degree of control over the nonlinear response, which still remains elusive. Here, we demonstrate giant and broadband all-optical ultrafast modulation of second-harmonic generation (SHG) in monolayer transition-metal dichalcogenides mediated by the modified excitonic oscillation strength produced upon optical pumping. We reveal a dominant role of dark excitons to enhance SHG by up to a factor of ∼386 at room temperature, 2 orders of magnitude larger than the current state-of-the-art all-optical modulation results. The amplitude and sign of the observed SHG modulation can be adjusted over a broad spectral range spanning a few electronvolts with ultrafast response down to the sub-picosecond scale via different carrier dynamics. Our results not only introduce an efficient method to study intriguing exciton dynamics, but also reveal a new mechanism involving dark excitons to regulate all-optical nonlinear photonics.
収録刊行物
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- ACS Photonics
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ACS Photonics 8 (8), 2320-2328, 2021-07-13
American Chemical Society (ACS)
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キーワード
- Chemical Sciences not elsewhere classified
- Second-Harmonic Generation
- Dark Excitons All-optical control
- Immunology
- Information Systems not elsewhere classified
- sub-picosecond scale
- 535
- excitonic oscillation strength
- 2 orders
- Bright Excitons
- ultrafast response
- all-optical modulation results
- carrier dynamics
- Transition Metal Dichalcogenides Monolayers
- broadband all-optical ultrafast mod.
- giant All-Optical Modulation
- Optically-Modulated Excitonic Strength
- Dark Excitons
- ultrafast data processing
- exciton dynamics
- Ultrafast Optical Modulation
- quantum technology
- monolayer transition-metal dichalco.
- all-optical nonlinear photonics
- Second-Harmonic Generation Mediated
- nonlinear photonic processes
- Infectious Diseases
- nonlinear response
- SHG modulation
- Medicine
- room temperature
- Physical Sciences not elsewhere classified
- application
- Biological Sciences not elsewhere classified
- second-harmonic generation
詳細情報 詳細情報について
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- CRID
- 1360021390755252352
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- ISSN
- 23304022
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- PubMed
- 34476288
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- データソース種別
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- Crossref
- KAKEN
- OpenAIRE
