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New laser interferometric schemes were recently developed in order to measure three components of the ultrasonic field.The TEMPO 3D is a tri-component,two-wave mixing interferometer capable of simultaneously measuring the out-of-plane component as well as the two orthogonal in-plane components of the surface displacement,using a single laser probe.All wave types can be detected.In this paper,we describe this new technology,which constitutes an advance in ultrasonic field visualization.