Читать книгу Introduction To Modern Planar Transmission Lines - Anand K. Verma - Страница 188

The Jones matrix of a quarter‐wave retarder and also the field components at the output are obtained by taking the relative phase Δφ = − π/2:

(4.6.27)

In the above equation, both field components are equal to E₀ = 1. It is noted that at the output of the quarter‐waveplate, the wave is a right‐hand circularly polarized wave. In the case, input wave components are and _, the field components at the output of the quarter‐waveplate, using equation (4.6.25a) are

(4.6.28)

Equation (4.6.28c) shows that an ellipse is traced by the E‐field in the (y‐z)‐plane. In this case, the quarter‐waveplate produces an elliptically polarized wave. However, for the case m = n, it degenerates into the circularly polarized wave. Further, for the rotated retarders the rotated Jones matrices could be obtained, similar to the case of the rotated polarizer, using equation (4.6.21a).