Abstract
A new type of Michelson interferometer is under development. It has been given the name MIROR which stands for: Michelson Interferometer with a ROtating Retroreflector. Optical path alterations are achieved by continuously rotating a retroreflector in one or both arms of the interferometer. First investigations on the features of the laboratory model have been performed. The spectral resolution, which is limited by the dimensions of the retroreflector, has been optimized. The possible influence of the retroreflector's mirror boundaries on the interferences of the laser and IR radiation has been considered and found to be negligible. The speed of measurement, i.e. time resolution has been adapted to the capability of the signal processing electronics (analog to digital converter). It has been proved, that spectral and time resolution for this design are independent of each other, i.e. the limiting parameters are those of the electronics (conversion respectively transfer rates). The influence of the inherent sinusoidally modulation of the path alteration velocity on the resulting spectra has been investigated. For this purpose the spectra resulting from single and double sided interferograms of different length have been compared.
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