Calculate the transmission and reflection coefficients for the case of a plane electromagnetic wave passing through three dielectric media as shown in the figure. The dielectric medium II is of width d.
n1
n2
n3
Assume n1 = 2, n2 = 3, and n3 = 0.
b) The medium n2 is part of an optical system (a lens), and n3 is air. If we wish to put an optical coating n2 on the surface such that there is no reflected wave for frequency Wo, what thickness "d" and index n2 are necessary?