Measuring polarization dependent dispersion of non-polarizing beam splitter cubes with spectrally resolved white light interferometry
2017
In this work we have measured the group-delay dispersion of an empty Michelson interferometer for s- and p-polarized
light beams applying two different non-polarizing beam splitter cubes. The interference pattern appearing at the output of
the interferometer was resolved with two different spectrometers. It was found that the group-delay dispersion of the empty
interferometer depended on the polarization directions in case of both beam splitter cubes. The results were checked by
inserting a glass plate in the sample arm of the interferometer and similar difference was obtained for the two polarization
directions. These results show that to reach high precision, linearly polarized white light beam should be used and the
residual dispersion of the empty interferometer should be measured at both polarization directions.
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