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(Solved): Transmission through thin layers. In the figure, light is incident perpendicularly on a thin layer ...
Transmission through thin layers. In the figure, light is incident perpendicularly on a thin layer of material 2 that lies between (thicker) materials 1 and 3. (The rays are tilted only for clarity.) Part of the light ends up in material 3 as ray
r_(3)(the light does not reflect inside material 2) and
r_(4)(the light reflects twice inside material 2). The waves of
r_(3)and
r_(4)interfere, and here we consider the type of interference to be either maximum (max) or minimum (min). The table below provides the indexes of refraction
n_(1),n_(2), and
n_(3), the type of interference, and the wavelength
\lambda in nanometers of the light as measured in air. Give the second least thickness
L.
n_(1),n_(2),n_(3),Type
L,\lambda Number Units
