laboratoire de physique statistique
 
 
laboratoire de physique statistique

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APPLIED OPTICS 


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P U B L I C A T I O N S



 
2010
Time-resolved quantitative multiphase interferometric imaging of a highly focused ultrasound pulse - Souris, Fabien and Grucker, Jules and Dupont-Roc, Jacques and Jacquier, Philippe and Arvengas, Arnaud and Caupin, Frederic
APPLIED OPTICS 496127-6133 (2010)

Abstract : Interferometric imaging is a well-established method to image phase objects by mixing the image wavefront with a reference one on a CCD camera. It has also been applied to fast transient phenomena, mostly through the analysis of single interferograms. It is shown that, for repetitive phenomena, multiphase acquisition brings significant advantages. A 1 MHz focused sound field emitted by a hemispherical piezo-transducer in water is imaged as an example. Quantitative image analysis provides high resolution sound field profiles. Pressure at focus determined by this method agrees with measurements from a fiber-optic probe hydrophone. This confirms that multiphase interferometric imaging can indeed provide quantitative measurements. (C) 2010 Optical Society of America