Abstract
For z-cut cubic crystals of Si, GaAs, InSb measurements of the peak intensities of Mandelstamm-Brillouin satellites corresponding to surface excitations of the pseudo surface mode (PSM) frequency range were conducted. The angular intensity dependence for various plane of incidence orientations reveal two maxima, for θ2=45°, and for θ2=36° (Si), 33° (GaAs), and 32° (InSb). Here θ is the angle between the (010) plane and the plane of incidence of light. The variations of the PSM satellite linewidth registered experimentally for the first time demonstrate the positions of its minima to be well correlated with θ1,2 in all the cases. The non-monotonous peak intensity and the linewidth of the PSM satellite behavior are explained by PSM attenuation anomalies around θ1,2.
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