  The acceleration of dense targets driven by the radiation pressure of
high-intensity lasers leads to a Rayleigh-Taylor instability (RTI) with
rippling of the interaction surface. Using a simple model it is shown that the
self-consistent modulation of the radiation pressure caused by a sinusoidal
rippling affects substantially the wavevector spectrum of the RTI depending on
the laser polarization. The plasmonic enhancement of the local field when the
rippling period is close to a laser wavelength sets the dominant RTI scale. The
nonlinear evolution is investigated by three dimensional simulations, which
show the formation of stable structures with "wallpaper" symmetry.
