  It has recently been shown that holographically nanostructured surfaces can
be employed to control the wavefront of (predominantly plasmonic)
optical-frequency light emission generated by the injection of medium-energy
electrons into a gold surface. Here we apply the concept to manipulation of the
spatial distribution of transition radiation emission from
high-refractive-index dielectric/semiconductor target materials, finding that
concomitant incoherent luminescent emission at the same wavelength is
unperturbed by holographic surface-relief structures, and thereby deriving a
means of discriminating between the two emission components.
