Detection of photoacoustic waves in liquids by fibre optic interferometry

Detection of photoacoustic waves in liquids by fibre optic interferometry

A Michelson-based fibre optic interferometer was used to make absolute measurements of the sub-nanometer liquid surface displacements created by the photoacoustic process. This measurement system is both broad-band and non-contacting. Photoacoustic waves, generated using pulses from a Nd: YAG laser...

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Veröffentlicht in:Optics communications 1993-12, Vol.104 (1), p.1-6
Hauptverfasser: Hand, D.P., Hodgson, P., Carolan, T.A., Quan, K.M., Mackenzie, H.A., Jones, J.D.C.
Format: Artikel
Sprache:eng
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Zusammenfassung:A Michelson-based fibre optic interferometer was used to make absolute measurements of the sub-nanometer liquid surface displacements created by the photoacoustic process. This measurement system is both broad-band and non-contacting. Photoacoustic waves, generated using pulses from a Nd: YAG laser operating at 1.06 μm, were measured in methanol, water, and various concentration mixtures. The wave amplitude demonstrated a quadratic relationship with concentration.
ISSN:0030-4018
1873-0310
DOI:10.1016/0030-4018(93)90094-L