Long-range detection of acoustic vibrations by speckle tracking
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 dis...
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| Veröffentlicht in: | Applied optics (2004) 2019-10, Vol.58 (28), p.7805-7809 |
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| container_issue | 28 |
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| container_title | Applied optics (2004) |
| container_volume | 58 |
| creator | Bianchi, S Giacomozzi, E |
| description | 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. |
| doi_str_mv | 10.1364/AO.58.007805 |
| format | Article |
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| fulltext | fulltext |
| identifier | ISSN: 1559-128X |
| ispartof | Applied optics (2004), 2019-10, Vol.58 (28), p.7805-7809 |
| issn | 1559-128X 2155-3165 1539-4522 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_2311657939 |
| source | Alma/SFX Local Collection; Optica Publishing Group Journals |
| subjects | Laser beams Speckle patterns |
| title | Long-range detection of acoustic vibrations by speckle tracking |
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