The utility model relates to a system for improving the polarization parameters of a holographic diffractive optical element—specifically a circularly polarizing beam splitter—designed to significantly enhance the polarization characteristics of such an element. The system essentially comprises a glass substrate (10) coated with an azopolymer layer (20), upon which a layer of an optically transparent adhesive (30) is applied. A cover glass (40) may also be placed over this final layer. This configuration prevents the formation of a surface-relief grating and/or compensates for its effects, thereby reducing the dependence of the element's diffraction efficiency on the azimuth of linearly polarized light. This serves as a key indicator of the improved polarization parameters of the new optical element. The proposed system, with its enhanced polarization parameters, can be utilized to construct a spectral polarimeter, enabling the determination of all light polarization parameters across a broad spectral range and in real time.
