All-optical detection of acoustic pressure waves with applications in photoacoustic spectroscopy.
| Autor: | Westergaard PG, Lassen M |
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| Jazyk: | angličtina |
| Zdroj: | Applied optics [Appl Opt] 2016 Oct 10; Vol. 55 (29), pp. 8266-8270. |
| DOI: | 10.1364/AO.55.008266 |
| Abstrakt: | An all-optical detection method for the detection of acoustic pressure waves is demonstrated. The detection system is based on a stripped (bare) single-mode fiber. The fiber vibrates as a standard cantilever and the optical output from the fiber is imaged to a displacement-sensitive optical detector. The absence of a conventional microphone makes the demonstrated system less susceptible to the effects that a hazardous environment might have on the sensor. The sensor is also useful for measurements in high-temperature (above 200°C) environments where conventional microphones will not operate. The proof-of-concept of the all-optical detection method is demonstrated by detecting sound waves generated by the photoacoustic effect of NO |
| Databáze: | MEDLINE |
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