Two beams two orthogonal views particle detection

This paper presents a new technique for recording the two views off-axis digital holography using only two beams, each one acting as an object beam for its proper view and as a reference for the other view. This technique allows one to obtain two orthogonal views of the same volume simultaneously using only two beams. This leads one to avoid the large focusing distance inherent to off-axis digital holography and gives the real position of any object in the working volume by crossing the two view data. Furthermore, the lateral resolution should be the same as the vertical one. The proposed technique was improved experimentally using a metallic wire in an L shape and four moving particles.