Nonlinear interaction of acoustic surface waves from coupling to charge carriers

Experiments on frequency mixing show that up and down conversion is enhanced over results reported for lithium niobate alone. Convolution experiments with a transverse electrode configuration show a similar enhancement. In addition, it is shown that one may represent the convolver with a load-independant voltage element in the linear response region; but when saturation begins, this source becomes dependent on load current. Experiments are reported which demonstrate how one signal may be used to vary the attenuation of another.