INTERFEROMETRIC ULTRASOUND DETECTION USING UNCALIBRATED PHASE SHIFTS

ÁLVAREZ, NATALIA; MARÍA TERESA GAREA; PEREZ QUINTIÁN, FERNANDO.

Santiago de Compostela

Congreso; ICO-23; 2014

ICO

We present an experimental scheme that allows ultrasound wave detection on a surface by means of a homodyne interferometric technique. We register interference signals for a set of uncalibrated phase shifts from which we are able to retrieve the surface displacement of the sample. We compared the results obtained with this technique against traditional phase recovery methods such as the 4 step Carre algorithm. We found a correlation of 98% between both results.