Observation of ultra-high-Q resonators in the ultrasound via bound states in the continuum
Fuente:
arXiv
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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| _version_ | 1866913233124720640 |
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| author | Farhat, Mohamed Achaoui, Younes Martinez, Julio A. Iglesias Addouche, Mahmoud Wu, Ying Khelif, Abdelkrim |
| author_facet | Farhat, Mohamed Achaoui, Younes Martinez, Julio A. Iglesias Addouche, Mahmoud Wu, Ying Khelif, Abdelkrim |
| contents | The confinement of waves in open systems represents a fundamental phenomenon extensively explored across various branches of wave physics. Recently, significant attention has been directed towards bound states in the continuum (BIC), a class of modes that are trapped but do not decay in an otherwise unbounded continuum. Here, we theoretically investigate and experimentally demonstrate the existence of quasi-BIC (QBIC) for ultrasonic waves by leveraging an elastic Fabry-Pérot metasurface resonator. We unveil several intriguing properties of the ultrasound QBIC that are robust to parameter scanning, and we present experimental evidence of a remarkable Q-factor of 350 at around 1 MHz frequency, far exceeding the state-of-the-art using a fully acoustic underwater system. Our findings contribute novel insights into the understanding of BIC for acoustic waves, offering a new paradigm for the design of efficient, ultra-high Q-factor ultrasound devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_06696 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Observation of ultra-high-Q resonators in the ultrasound via bound states in the continuum Farhat, Mohamed Achaoui, Younes Martinez, Julio A. Iglesias Addouche, Mahmoud Wu, Ying Khelif, Abdelkrim Applied Physics Classical Physics The confinement of waves in open systems represents a fundamental phenomenon extensively explored across various branches of wave physics. Recently, significant attention has been directed towards bound states in the continuum (BIC), a class of modes that are trapped but do not decay in an otherwise unbounded continuum. Here, we theoretically investigate and experimentally demonstrate the existence of quasi-BIC (QBIC) for ultrasonic waves by leveraging an elastic Fabry-Pérot metasurface resonator. We unveil several intriguing properties of the ultrasound QBIC that are robust to parameter scanning, and we present experimental evidence of a remarkable Q-factor of 350 at around 1 MHz frequency, far exceeding the state-of-the-art using a fully acoustic underwater system. Our findings contribute novel insights into the understanding of BIC for acoustic waves, offering a new paradigm for the design of efficient, ultra-high Q-factor ultrasound devices. |
| title | Observation of ultra-high-Q resonators in the ultrasound via bound states in the continuum |
| topic | Applied Physics Classical Physics |
| url | https://arxiv.org/abs/2312.06696 |