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Air-coupled ultrasound detection using capillary-based optical ring resonators
We experimentally demonstrate and theoretically analyze high Q-factor (~10(7)) capillary-based optical ring resonators for non-contact detection of air-coupled ultrasound. Noise equivalent pressures in air as low as 215 mPa/√Hz and 41 mPa/√Hz at 50 kHz and 800 kHz in air, respectively, are achieved....
| Autores principales: | , , , , , , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
| Publicado: |
Nature Publishing Group UK
2017
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5427941/ https://www.ncbi.nlm.nih.gov/pubmed/28250443 http://dx.doi.org/10.1038/s41598-017-00134-7 |