Ellipticity of He-Ne laser radiation reflected by leaves near brewster angle

It was found that the radiation reflected by adaxial surface of leaf was elliptic polarization with maximum near Brewster. The ellipticity of reflected by leaves radiation increased with the increasing of mesophyll air spaces and the decreasing of leaf chlorophyll concentration. It can be explained that the non-polarized fraction of light from internal structure depends on the leaf pigments concentration and the quantity of air spaces in mesophyll.