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http://hdl.handle.net/2122/15608| Authors: | Bianchi, Silvio* Giacomozzi, Emanuele* |
Title: | Long-range detection of acoustic vibrations by speckle tracking | Journal: | Applied Optics | Series/Report no.: | /58 (2019) | Issue Date: | 1-Oct-2019 | DOI: | 10.1364/AO.58.007805 | Abstract: | When a rough surface is illuminated by a laser beam, it scatters the light, producing a random interference pattern also known as speckle pattern. By imaging the speckle pattern with a line-scan CCD, we are able to measure the acoustic vibrations of a scattering surface, which can be up to 300 m distant. We also show that our instrument can be used as a laser microphone capable of detecting ambient sound such as a human voice. |
| Appears in Collections: | Article published / in press |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| _Revised__Long_range_detection_of_acoustic_vibrations_by_speckle_tracking_AO.pdf | Restricted Paper | 1.38 MB | Adobe PDF | View/Open |
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