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

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at this interface. :'-rote that "total tangential fields at boundary a" refers to the
tangential fields in both layer 0 and layer 1 at boundary a, i.e. boundary conditions
require the equality of the tangential fields on both sides of the interface. Fifth.
the reflection coefficient of the thin slab is determined from the tangential fields at
boundary a. Si.xth, the transmission coefficient of the thin film is determined from
the reflection coefficient of the slab.
Step 1 - Apply boundary conditions at boundary b.
Our calculation determines the transmission of p-polarized light through a single
thin film. Therefore, the tangential electric field is related to the total electric field
as
(·t9)
where i = 0, 1, or 2, which denotes the incident region, the thin film, and the substrate.
respectively. For p-polarized light the tangential component of the magnetic field is
identically equal to the total magnetic field, i.e.
(-1.10)
Therefore. boundary conditions at boundary b imply
(4.11 )
and
(4.12)
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