  It is shown that the transverse Rayleigh Taylor like instability can be well
stabilized by using elliptically polarized laser in the hole boring radiation
pressure acceleration regime. The $\bm{J}\times\bm{B}$ effect of the laser will
thermalize the local electrons and support a transverse diffusion mechanism of
the ions, resulting in the stabilization of the short wavelength perturbations,
which is quite similar to the ablative Rayleigh Taylor instability in the
initial confinement fusion research. The proper range of polarization ratio is
obtained from a theoretical model for the given laser intensity and plasma
density. The stabilization mechanism is well confirmed by two dimensional
Particle-in-Cell simulations, and the ion beam driven by the elliptically
polarized laser is more concentrated and intense compared with that of the
circularly polarized laser.
