Cavity-enhanced photoacoustic detection using acoustic and fiber-optic resonators

A wineglass has been used as an acoustic resonator to enhance the photoacoustic signal generated by laser excitation of absorbing dyes in solution. The amplitude of the acoustic signal was recorded using a fiber-optic transducer based on a Fabry–Pérot cavity attached to the rim of the wineglass. The...

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Bibliographic Details
Published in:Applied physics. B, Lasers and optics Lasers and optics, 2015-04, Vol.119 (1), p.11-19
Main Authors: MacLean, Amy G., Schneider, Leila Tamina, Freytag, Annica I., Gribble, Adam, Barnes, Jack A., Loock, Hans-Peter
Format: Article
Language:English
Subjects:
Acoustics
Engineering
Fiber optics
Holes
Lasers
Optical Devices
Optical fibers
Optical properties
Optics
Photonics
Physical Chemistry
Physics
Physics and Astronomy
Quantum Optics
Resonators
Transducers
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Summary:A wineglass has been used as an acoustic resonator to enhance the photoacoustic signal generated by laser excitation of absorbing dyes in solution. The amplitude of the acoustic signal was recorded using a fiber-optic transducer based on a Fabry–Pérot cavity attached to the rim of the wineglass. The optical and acoustic properties of the setup were characterized, and it was used to quantify the concentration of phosphomolybdenum blue and methyl red solutions. Detection limits of 1.2 ppm and 8 μM were obtained, respectively.
ISSN:0946-2171
1432-0649
DOI:10.1007/s00340-014-5969-9