Patent ID: 7733742
Filing Date: 2010-06-08
Classification: A61B,G01N,G03H

Abstract:
1. An acousto-optic tomographic imaging method for an object comprising steps during which: (a) the vibration of a three-dimensional area of the object is generated by applying an acoustic wave exhibiting a certain acoustic frequency to the object, (b) an incident wave and a pump wave are generated by: (c) an incident light wave is applied to said object and a signal light wave is generated by travelling through the object and interacting with the three-dimensional area of the object, said signal light wave comprising at least one acousto-optic component frequency-shifted by said acoustic wave, (d) a light pump wave is generated, coherent with said incident wave at a frequency similar to the frequency of said acousto-optic component, (e) a complex index grating is formed in a dynamic holographic material by applying said signal wave and said pump wave to said material, and (f) a digital parameter relating to the light intensity in this three-dimensional area is obtained from said complex index grating.