Simultaneous X, Y acoustooptic deflection

Acoustooptic deflection by coexistent x- and y- directed sound waves in a light deflector is analyzed. It is found that with this technique the intrinsic deflection efficiency for x, y deflection can be equivalent to the deflection efficiency obtained with two cascaded one-dimensional accoustooptic light deflectors, so that a choice between the two approaches can be based on purely practical considerations.