William Angerer - Department of Physics and Astronomy - University ...

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As usual, ¢ is the angle between the crystal x a..xis and the lab x a..xis and Q
is the
miscut angle of the sample. Thus, the phase shift induced by the birefringence of the
film may be accounted for by
(E. i)
This is the wave that is transmitted through GaN/sapphire and is denoted by the
subscript t. vVe can now project this onto the coordinate system of the polarizer by
(E.S)
where T denotes the transpose of the matrix. The field transmitted through the
s-polarizer is
Ei = P.LEf
(E.g)
with
0 0 0
P.L = 0 1 0 (E.I0)
0 0 0
This field may be expressed in terms of the incident field as
(E.ll)
Because Q is a small angle, this expression is dominated by sin ¢, as opposed to the
more conventional dependence of sin 2¢.
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