WGM microprobe device for high-sensitivity and broadband ultrasound detection
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2025
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866910822340493312 |
|---|---|
| author | Sun, Jialve Huangfu, Shengnan Chen, Tinglan Cai, Zijing Ruan, Bowen Zhang, Fangxing |
| author_facet | Sun, Jialve Huangfu, Shengnan Chen, Tinglan Cai, Zijing Ruan, Bowen Zhang, Fangxing |
| contents | Whispering-gallery-mode (WGM) microcavities have emerged as a promising alternative to traditional ultrasound probes, offering high sensitivity and wide bandwidth. In our research, we propose a novel silica WGM microprobe device, with impressive Q factors up to 10^7.The side-coupled approach and special encapsulation design make the device small, robust, and capable of utilizing in both gaseous and liquid environments.We have successfully conducted photoacoustic (PA) imaging on various samples using this device which demonstrates a high sensitivity of 5.4 mPa/sqrt(Hz) and a board bandwidth of 41 MHz at -6 dB for ultrasound. What's more, it's capable of capturing the vibration spectrum of microparticles up to a few hundred megahertz. Our compact and lightweight device exhibits significant application potential in PA endoscopic detection, near-field ultrasound sensing and other aspects. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_04627 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | WGM microprobe device for high-sensitivity and broadband ultrasound detection Sun, Jialve Huangfu, Shengnan Chen, Tinglan Cai, Zijing Ruan, Bowen Zhang, Fangxing Optics Whispering-gallery-mode (WGM) microcavities have emerged as a promising alternative to traditional ultrasound probes, offering high sensitivity and wide bandwidth. In our research, we propose a novel silica WGM microprobe device, with impressive Q factors up to 10^7.The side-coupled approach and special encapsulation design make the device small, robust, and capable of utilizing in both gaseous and liquid environments.We have successfully conducted photoacoustic (PA) imaging on various samples using this device which demonstrates a high sensitivity of 5.4 mPa/sqrt(Hz) and a board bandwidth of 41 MHz at -6 dB for ultrasound. What's more, it's capable of capturing the vibration spectrum of microparticles up to a few hundred megahertz. Our compact and lightweight device exhibits significant application potential in PA endoscopic detection, near-field ultrasound sensing and other aspects. |
| title | WGM microprobe device for high-sensitivity and broadband ultrasound detection |
| topic | Optics |
| url | https://arxiv.org/abs/2502.04627 |