Nonlinear optoacoustic transformation in the system of dielectric substrate/submicron metal coating/liquid

The optoacoustic method has been shown to be an accurate technique for the measurement of the properties of submicron metal coatings deposited on a dielectric substrate, i.e., mirrors. The method has been previously theoretically described in terms of a linear model of optoacoustic transformation in...

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Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2011-10, Vol.130 (4), p.EL213-EL218
Main Authors: Kopylova, Daria S., Pelivanov, Ivan M.
Format: Article
Language:English
Subjects:
Computer Simulation
Equipment Design
Ethanol
Lasers
Linear Models
Metals
Nonlinear Dynamics
Numerical Analysis, Computer-Assisted
Photoacoustic Techniques - instrumentation
Temperature
Water
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Summary:The optoacoustic method has been shown to be an accurate technique for the measurement of the properties of submicron metal coatings deposited on a dielectric substrate, i.e., mirrors. The method has been previously theoretically described in terms of a linear model of optoacoustic transformation in a system substrate/coating/liquid. The goal of the present work was to determine the limits at which the linear model is still applicable. The modification of the laser induced acoustic signal profiles and transfer functions of optoacoustic transformation versus the laser fluence was studied for two liquids: ethanol and water.
ISSN:0001-4966
1520-8524
DOI:10.1121/1.3635297