A new numerical technique for search of low-attenuated leaky waves in crystals

An efficient numerical technique for the search of orientations in any crystal which supports the propagation of low-attenuated leaky waves with Rayleigh-type structure is described. This technique is based on the known relation between the occurrence of pure SAW solutions on leaky wave branch and the so-called "space of simple reflection". The new technique was applied to quartz. As a result, the continuous lines of orientations have been found in which leaky waves propagate with negligible attenuation. One of these lines includes the Rayleigh SAW previously found to exist on the leaky wave branch in an X-cut of quartz.