Question

Describe the state of polarization of the waves (a) to (d) written below. Are they linearly polarized? Circularly polarized? Neither?

(a) E = Eo cos (k z – ω t) x – Eo cos (k z – ω t) y

(b) E = Eo cos [2π (z/λ – υ t)] x + Eo cos [2π (z/λ – υ t)] y

(c) E = Eo cos (k z – ω t) x + Eo cos (k z – ω t – π/4) y

(d) E = Eo cos (k z – ω t) x + Eo cos (k z – ω t + π/2) y

x and y are unit vectors

Answer 1