An EM wave wavelength lambda 300 nm traveling through air im

An E&M; wave (wavelength lambda= 300 nm) traveling through air (impedance n_0) approaches a dielectric slab (n_1 where epsilon_r = 2) of thickness d at an angle theta = 20degree what is magnitude of the wavevector in air and in the slab? what are the x and z components of the wavevector in air and the slab? what thickness of d gives the minimum reflected electric field ?

Solution

a) magnitude of wave vector= 2d* Sin20

= 0.2d

b) z component = no - n1 /(no + n1) * E1

x component = n1 - n0 /( no + n1) * E1