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Two electromagnetic waves are represented by the following expressions:
E = Ae(k=-wt) En
Ē2 = Ae"(kz-wt+a),
where both A and a are real.
(a) For each wave, determine its polarization state. Calculate the time-average Poyning
(s).
vector
Consider the superposition of the two waves E3 = E1 + E2.
(b) Calculate the time-average Poyning vector
(5.).
(c) For what value(s) of a will E, be a circularly polarized wave?

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