A linearly polarized electromagnetic wave is sent through a system of two polari

Question

A linearly polarized electromagnetic wave is sent through a system of two polarizing sheets. The first sheet, A, is oriented so that its transmission axis makes an angle of 30° with respect to the incident electric field of the wave. The second sheet, B, is oriented so that its transmission axis makes an angle of 90° with the incident electric field of the wave. The incident wave has a peak electric field E0 and an average intensity S0.

Reference: Ref 24-1

Determine the peak value of the electric field amplitude after passing through sheet A?

Explanation / Answer

here

the peak value of the electric field amplitude after passing through sheet A is

Ea = E0*cos(30)

Ea = sqrt(3)/2*E0

Ea = 0.87 E0

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