Two semi-infinite lossless dielectric media have refractive indices equal to 3 and to 1, respectively. At a frequency of 3×10 14 Hz, experimental observation of an evanescent wave in the second medium...


Two semi-infinite lossless dielectric media have refractive indices equal to 3 and to 1, respectively. At a frequency of 3×1014
Hz, experimental observation of an evanescent wave in the second medium shows that it decays in the ratio 1/e over a distance of 1 μm, measured along the normal to the plane of separation.


a) Find the corresponding angle of incidence, in medium 1.


b) Evaluate the phases of the corresponding TE and TM reflection coefficients in medium 1, on the separation plane.



May 23, 2022
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