Þ solve the wave equation for the two
refracted modes: l ij (nm)E¹m,j =0
Þ obtain the
ratios E¹m,x / E¹m,z E¹m,y / E¹m,z
Þ put these
ratios into the BCs at the interface between the two media
Þ obtain the E-field of the reflected wave in terms of
the E-field of the incident wave