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Optical imaging of high-frequency focused ultrasonic field using a Nomarski interferometer coupled with multichannel lock-in detection

[+] Author Affiliations
Lyès Baït

Systems & Metrology AUSY Company, 88 Bd Gallieni, 92130 Issy-les-Moulineaux, France

Smain Femmam

University of Haute Alsace, Academy of Strasbourg, 2 Frères Lumière, F-68093 Mulhouse, France

A. Claude Boccara

Langevin Institute, LOP Laboratory, ESPCI ParisTech/CNRS-UMR 7587, 10 Vauquelin, 75231 Paris, France

Jean Paul Roger

Langevin Institute, LOP Laboratory, ESPCI ParisTech/CNRS-UMR 7587, 10 Vauquelin, 75231 Paris, France

J. Electron. Imaging. 21(3), 033012 (Aug 14, 2012). doi:10.1117/1.JEI.21.3.033012
History: Received May 5, 2011; Revised July 2, 2012; Accepted July 13, 2012
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Abstract.  We present a nondestructive optical technique for quantitatively imaging a focused ultrasonic field in continuous-wave mode within clear media. We used a Nomarski interferometer configuration coupled with a couple charge device array and multichannel lock-in detection. A two-dimensional full-field image of pressure amplitude can be obtained in only one acquisition. This method was experimentally demonstrated with a high-frequency ultrasonic transducer and experimental measurements of acoustic pressure obtained at 27 MHz. This technique is very interesting because it does not introduce any disturbance in the ultrasonic field and does not need any scanning mechanisms to acquire images. It can be useful for probing high-frequency acoustic fields and for calibrating HF-piezo-electric transducers.

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© 2012 SPIE and IS&T

Citation

Lyès Baït ; Smain Femmam ; A. Claude Boccara and Jean Paul Roger
"Optical imaging of high-frequency focused ultrasonic field using a Nomarski interferometer coupled with multichannel lock-in detection", J. Electron. Imaging. 21(3), 033012 (Aug 14, 2012). ; http://dx.doi.org/10.1117/1.JEI.21.3.033012


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