Polarization Effects in Multilayer Dielectric Thin Films

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Abstract
The spectral behaviour of the reflected and transmitted light from a dielectric multilayer film at an oblique angle of incidence is discussed. These spectra are different for both states of polarizations p and s even when the incoming light is unpolarized. The difference between both spectra of the two states of polarization is regarded as the polarization effect. This effect is investigated for three cases: all dielectric Fabry-Perot interference filters (ADI), Long and Short-wave Pass Filters (LWPF and SWPF) and multilayer antireflection coatings (AR). The conditions for avoiding or reducing these polarization effects in multilayer dielectric thin films of the above-mentioned cases are found and applied. Typical designs and calculated spectra are given and discussed.

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